TSUNAMI Presented by: PUTRI EDRYNA LARASATI 1310007008
NATURAL PHENOMENON
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Eclip
se
Akhmad Yusuf
1310007011
Pendidikan Fisika
Universitas Ahmad Dahlan
2 Incident
Eclipse
Lunar Eclipse Solar Eclipse
Pendidikan Fisika
Universitas Ahmad Dahlan
Lunar Eclipse
lunar eclipse occurs when the Earth passes between the
Sun and the Moon, causing the shadow to cover the full
moon
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
Solar Eclipse
Solar eclipse occurs when the Moon passes directly between the
Earth and the Sun, causing a shadow to fall on Earth. This can only
occur at new moon phase
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
Total eclipse, occurs when the peak time of
the eclipse, the disk of the Sun is closed
completely by a disk of the Moon. At that time,
the Moon disc as large or larger than the disk of
the sun. The sun disc size and the disc moon
itself varies depending on each distance EarthMoon and the Earth-Sun.
A partial eclipse, occurs when the disk of the
Moon (when the peak eclipse) only cover part of
the Sun disc. In this eclipse, there is always a
part of the Sun disc that is not covered by a
disk of the Moon.
Pendidikan Fisika
Universitas Ahmad Dahlan
An annular eclipse, occurs when the disk of
the Moon (when the peak eclipse) only cover
part of the Sun disc. This type of eclipse occurs
when the size of the disk of the Moon is smaller
than the Sun disc. So that when the disc Moon
is in front of the disc of the Sun, not the entire
disk of the Sun will be covered by a disk of the
Moon. The sun disc portion which is not
covered by a disk of the Moon, located in the
disk around the moon and looks like a luminous
ring.
Hybrid eclipse, a total eclipse and the shift
between the rings. At a certain point on the
earth's surface, this eclipse appears as a total
eclipse, whereas at other points appear as a
ring eclipse. Relatively rare hybrid eclipse
Pendidikan Fisika
Universitas Ahmad Dahlan
Palembang, Sumatra:
07.21
Palu, Sulawesi: 08.38
Ternate, Malaku: 09.53
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
Corona
Pendidikan Fisika
Universitas Ahmad Dahlan
nimal Behavior Changed At eclipse
Kukang and squirrels that show aggressive activity when the sun is
covered,
so also for the animal species of birds changes, such as seeking
protection during a solar eclipse.
ordinary bats are nocturnal going back out to look for food because
she thought the night had come.
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
TSUNAMI
Presented by:
PUTRI EDRYNA LARASATI
1310007008
Pendidikan Fisika
Universitas Ahmad Dahlan
TSUNAMI
earthquake
shifting plates
a volcanic eruption.
The tsunami also often mistaken as a tidal
wave.
However, the actual tsunami wave has nothing to
do with the events of the tide. Therefore, to avoid
misinterpretation, oceanographers often use the
term seismic sea waves (seismic sea wave) to refer
to the tsunami, which is scientifcally more
accurate.
Pendidikan Fisika
Universitas Ahmad Dahlan
Cause of the
Tsunami?
Vertical movement in the Earth's crust, caused
the seabed to rise or may fall suddenly, as a
result there was a disturbance in the balance of
seawater. This resulted in the energy fow of
sea water, which when it reached the coast
into big waves resulting tsunami.
In the deep ocean, tsunami waves traveling at speeds
of up to 1000 km per hour. Equals the speed of the
aircraft
The speed
wave of a
tsunami
depends on the depth of the sea where the waves
occurred, where speed can reach hundreds of kilometers
per hour. When the tsunami reaches the shore, its speed
will be approximately 50 km / h and energy is very
damaging coastal path. Damage and casualties that
occur due to
the TsunamiFisika
can be caused by
Pendidikan
waterhammer
and material
carried
by the wave fow
Universitas
Ahmad
Dahlan
Tsunami by
physics?
Explanation tsunami wave can be approximated by
the incident transverse wave propagation. Wave
energy is a function of the height / depth and fast
propagation. While the height of the wave itself is
affected by the wavelength. Pajtang enormous
tsunami wave which is about hundreds of kilometers
and are as shallow waves. Shallow wave itself is a
water wave when the ratio of the depth to the
wavelength
is smaller than 0.05.
Well magnitude shallow
wave
propagation speed can be determined
by
g is the acceleration due to gravity
V=
d is the depth of water
Pendidikan Fisika
Universitas Ahmad Dahlan
What happens at the time of the
tsunami wave energy enters shallower
region?
It turns out very little reduction of wave energy and
wave energy can even be said to be fxed. This is in
accordance with the principle of the rate of energy loss
(energy loss rate) on a traveling wave is inversely
proportional to its wavelength. So in conclusion with
large wavelength (eg tsunami wave), it will be less
energy is lost, so that it can be said as before, the
tsunami wave energy fxed / constant. ???
With the constant energy and a decrease in the speed
of tsunami waves as reduction in water depth will
impact on the ocean wave height increases. In fact,
according to scientists tsunami wave velocity of 300
m / s, then the wave height will be increased by 30
m. It is remarkable high tsunami wave
Pendidikan Fisika
Universitas Ahmad Dahlan
Tips for survivors of the tsunami wave
- If a big earthquake and tsunami potential
immediately to evacuate and stay away from
areas of the seashore
-Up to place high approx could not be achieved
by water waves
-Use hill / mountain area nearby as you and
your family evacuation destination
- Beware if you suddenly see the tide is low, it
could be a sign of a tsunami.
Pendidikan Fisika
Universitas Ahmad Dahlan
Early signs of the arrival of the tsunami
1. Starting an earthquake
2. Listen to the rumbling sounds
3. Note the decrease in sea water
4. Always be aware of the first wave
Pendidikan Fisika
Universitas Ahmad Dahlan
Facts of The occurrence of Tsunami in
Indonesia
1. The Tsunami On August 26, 1883 due to the
eruption of Krakatoa killed more than 36,000
people
2. On 17 July 2006, earthquake and tsunami hit
the southern island of Java, the victims more
than 500 peoples
3. Tsunami that occurred on December 26, 2004, a massive earthquake
that caused tsunami claimed the lives of more than 250,000 in South
Asia, Southeast Asia and Africa. Tsunami height of 35 m. Aceh and
Nias one of the areas that impact most severely damaged by the waves
Pendidikan Fisika
Universitas Ahmad Dahlan
LIGHTNING
By : Puspa Arum Juwitasari
Pendidikan Fisika
Universitas Ahmad Dahlan
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Pendidikan
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•
During the thunderstorm, precipitation
particles (water droplets and ice crystals)
in the higher region of the clouds will
then collide with each other as they rub
against each other in strong currents of
air. This strong air current here is due to
the ascending (rising) and descending air
in the updrafts and downdrafts of the
storm. As a result, this colliding and
rubbing of many water droplets and ice
Fisika
crystals creates aPendidikan
static electrical
charge.
Universitas Ahmad Dahlan
•
Thus, causing areas of negative
and positive charge to develop
within the thunderstorm. Some
of the ice (snow) crystals and
water droplets will therefore
become positively charged (+
plus sign), while others become
negatively charged (- minus
sign). The positive and negative
electrical charges in the cloud
then separate from each other
where the positively charged
snow crystalsPendidikan
moves to Fisika
the
Universitas Ahmad Dahlan
When the diference in the charges at the lower section
of the cloud becomes large enough, whereby reaching a
certain strength, a giant "spark" occurs causing the fow
of electricity (electrical energy ) to be released through
the air to another point that has an opposite charge. This
release of electrical energy is called a leader stroke
which may be from one cloud to another (Cloud-to-Cloud
Lightning) or from one section of the cloud to another
(In-Cloud Lightning) or from cloud to the ground (Cloudto-Ground Lightning). Once a connection is made and the
path is complete, a surge of electrical current moves in
the opposite direction back to the cloud and produce a
fash of light which we call lightning. This process is
called the main stroke.
Pendidikan Fisika
Universitas Ahmad Dahlan
Day and
Night
Pendidikan Fisika
Universitas Ahmad Dahlan
• Surah Al-Furqan ; verse 47
َ• وَهُ ََ الوَِي جَعَلَ لَكُمُ اللوَْلَ لِبَاسا وَالّوَْمَ سُبَات وَجَعَل
الّوََا َر نُشَُرا
• Artinya:” Dan Dialah yang
menjadikan untuk kamu malam
sebagai pakaian da tidur sebagai
pemutus dan Dia menjadikan siang
untuk bertebaran”.(Al-Furqan:47)
Pendidikan Fisika
Universitas Ahmad Dahlan
• Surat Yasin Ayat 37-40
وَالشومَُْ تَجْرِّي لِمُسْتَقَرّ ولََا.٣٨ َ وَآيَةٌ ولَُمْ اللوَْلُ نَسْلَخُ ِّّْهُ الّوََارَ فَ ِإذَا هُم ّظُْلِمَُن٣٧ •
َُْ َل الشوم.٤٠ م
ِ حتوَ عَادَ كَا ْلعُرّْجَُنِ ا ْلقَدِي
َ َ وَا ْلقَمَرَّ قَدو ْرنَاهُ ََّّازِل. ٣٩ م
ِ َِعزِيزِ ا ْلعَل
َ ْذَ ِلكَ تَقْدِيرُّ ال
َيَّبَغِي َلََا أ َن تُدْرِكَ ا ْلقَمَرَّ و ََل اللوَْلُ سَابِقُ الّوََارِ َوكُل فِي فَلَكٍ يَسْبَحَُن
• Artinya:“ Dan suatu tanda (kekuasaan Allah yang besar) bagi
mereka adalah malam; Kami tanggalkan siang dari malam itu,
maka dengan serta merta mereka berada dalam kegelapan, dan
matahari berjalan ditempat peredarannya. Demikianlah ketetapan
Yang Maha Perkasa lagi Maha Mengetahui. Dan telah Kami
tetapkan bagi bulan manzilah-manzilah, sehingga (setelah dia
sampai ke manzilah yang terakhir) kembalilah dia sebagai bentuk
tandan yang tua. Tidaklah mungkin bagi matahari mendapatkan
bulan dan malampun tidak dapat mendahului siang. Dan masingmasing beredar pada garis edarnya”. (Yasin: 37-40)
Pendidikan Fisika
Universitas Ahmad Dahlan
What Causes Day and
Night?
Pendidikan Fisika
Universitas Ahmad Dahlan
• Rotation of the Earth: The Earth
orbits around the Sun. It takes one
year to go around the Sun one
complete time. The Earth also
rotates, or spins, on its axis. It takes
one day to spin around itself one
complete time. The Earth's axis is
not straight up and down, but tilted
at an angle of 23.5 degrees. The
rotation is what causes the change
from day to night. This tilt is
responsible for having seasons. If
the Earth were not tilted, we would
have the same season all year long.
Pendidikan Fisika
Universitas Ahmad Dahlan
Why Does the Earth Spin?
4.54 BILLION YEARS AGO, OUR
SOLAR SYSTEM FORMED
WITHIN A CLOUD OF
HYDROGEN NOT UNLIKE THE
ORION NEBULA, OR THE EAGLE
NEBULA, WITH ITS AWESOME
PILLARS OF CREATION.
THEN, IT TOOK SOME KICK,
LIKE FROM THE SHOCKWAVE
FROM A NEARBY SUPERNOVA,
AND THIS SET A REGION OF
THE COLD GAS FALLING
INWARD THROUGH ITS
MUTUAL GRAVITY. AS IT
COLLAPSED, THE CLOUD
BEGAN TO SPIN.
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IT’S THE
CONSERVATIO
N OF
ANGULAR
MOMENTUM.
THE EARTH SPINS BECAUSE IT
FORMED IN THE ACCRETION
DISK OF A CLOUD OF
HYDROGEN THAT COLLAPSED
DOWN FROM MUTUAL
GRAVITY AND NEEDED TO
CONSERVE ITS ANGULAR
MOMENTUM. IT CONTINUES
TO SPIN BECAUSE OF
INERTIA.
THE REASON IT’S ALL THE
SAME DIRECTION IS BECAUSE
THEY ALL FORMED TOGETHER
IN THE SAME SOLAR NEBULA,
BILLIONS OF YEARS AGO.
Pendidikan Fisika
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Day and Night
The Earth exhibits two different kinds of motion. One is rotation around
its own axis and another movement is it revolves around the sun in a
fixed orbit. The spinning of the Earth around its own axis causes day and
night. It takes 24 hours to complete one rotation. However, sunlight
shines only on the half of the Earth facing the Sun. That half has day the
other half is dark and has a night.
This phenomenon can also be observed with the help of a torchlight or a
table lamp focused on a globe, which is made to rotate.
Pendidikan Fisika
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Sukron Katsiiron
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How
Rainbow is
Formed
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Rainbow
Rainbow is one of optic
phenomenon that happens
in the atmosphere of the
earth naturally. We can see
it at mountain range, or
when it is cloudy, or when
it is raining
and rising of
Pendidikan Fisika
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Shape of Rainbow
As we know, we jtust can see it a half
of circle form, but actually the rainbow
is a circle form. We can see it
perfectly, if it is seen by standing in
the high place like in the air plane or
standing on top of mountain. It is real
that rainbow is a circle form not like
parabola form. On the ground, we can
Pendidikan Fisika
not see it perfectly
but only half of
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Interestingly, the location of
the rainbow totally depends on
the position of the person who
can see it, and on the position
of the sun relative to that
person. If the sun is shining
towards your eyes, you will
never see a rainbow, the sun
needs to be behind you. you
Fisika to
will never Pendidikan
be
able
see
a
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How this is happened ?
Light from the sun enters the
raindrops, and because the density of
the rain water is different from the
density of the air, the sunlight refracts
that is, it bends slightly. When the light
bends, it splits into a spectrum of
colored light because different colors
of light refract at slightly different
angles.
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Some of this colored light is
refected back off the internal
surface of the raindrop, similar light
is refracted by the water and
refected on the mirror in the water.
When we see this refected light,
the reason why we see each color
separately is that each color of light
bends back out of the raindrop at a
slightly different
angle.
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Fisika
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So we see all red light
at an angle of 42
degrees between us
and the sun, and all
violet light at an angle
of 40 degrees between
us and the sun and
the other colors at
angles between 40
and 42 degrees. You
can see a diagram of
how this worksPendidikan
in thisFisika
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The Jabal Magnet
Phenomena
Jheni Puspita Sari
1310007002
Pendidikan Fisika
Universitas Ahmad Dahlan
Are you know about jtabal magnet?
the vehicle will undergo a magnetic pull on Jabal Magnet Medina,
Saudi Arabia
Pendidikan Fisika
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What happened?
Room Illusion
this is jtust an illusion, an illusion is
caused by the topography factor
(landschap) local.
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What happened?
When the car is running in a fat, then that is invisible to our eyes is that
there are trees on both sides of the road. By simple logic, automatically in
the brain that this tree will stand upright. Likewise, when the road to
Pendidikan Fisika
decline, then this tree will remain visible above the vertical upright.
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What happened?
When the road was sloping whereas we often use the tree as a "vertical
reference" also tilted it happens like in the picture next to this. The car
actually reverse itself when the engine is off. The actual road was sloping
direction toward the right (lower right side), but these trees were skewed
in the opposite direction to the
slope of the
road. So that our minds
Pendidikan
Fisika
"fooled" by our eyes that seemed
to see the
slopeDahlan
of the road to the left.
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Ahmad
Why these trees can be tilted like
that?
Soil Creep
Symptoms of soil creep is characterized by
the shape of tree is tilted or curved.
Symptoms of soil creep is often
characterized by the shape of the tree is
tilted or even curved. Soil profle will be
visible on the curved surface. Curvature of
the upper soil (soil) this happens because
the heating process (expansion) and
cooling (contraction) occurring repeatedly.
Pendidikan Fisika
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Why these trees can be tilted
like that?
1. At the time of the day,the ground will
foating due to heat. Then the surface
of sloping ground will expand following
the line 1 → 2. That perpendicularly
from the surface of the feld.
2. At night time there is a reduction in
temperature or cooling the ground. This
cooling does not return from the point 2
to original point (1), but what happens is
a decrease of point 2 → 3 vertically as
follows gravity.
3. This process resulted in the change of
resultant position of the points of the
surface. Because this process is repeated
day and night, as well as the summer
and winter, then ground it becomes
visible curve.
4. This curvature will affect the trees also
electricity poles that stuck on the surface
the land.
PendidikanofFisika
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Pendidikan Fisika
Universitas Ahmad Dahlan
Loading
Pendidikan Fisika
Universitas Ahmad Dahlan
Eclip
se
Akhmad Yusuf
1310007011
Pendidikan Fisika
Universitas Ahmad Dahlan
2 Incident
Eclipse
Lunar Eclipse Solar Eclipse
Pendidikan Fisika
Universitas Ahmad Dahlan
Lunar Eclipse
lunar eclipse occurs when the Earth passes between the
Sun and the Moon, causing the shadow to cover the full
moon
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
Solar Eclipse
Solar eclipse occurs when the Moon passes directly between the
Earth and the Sun, causing a shadow to fall on Earth. This can only
occur at new moon phase
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
Total eclipse, occurs when the peak time of
the eclipse, the disk of the Sun is closed
completely by a disk of the Moon. At that time,
the Moon disc as large or larger than the disk of
the sun. The sun disc size and the disc moon
itself varies depending on each distance EarthMoon and the Earth-Sun.
A partial eclipse, occurs when the disk of the
Moon (when the peak eclipse) only cover part of
the Sun disc. In this eclipse, there is always a
part of the Sun disc that is not covered by a
disk of the Moon.
Pendidikan Fisika
Universitas Ahmad Dahlan
An annular eclipse, occurs when the disk of
the Moon (when the peak eclipse) only cover
part of the Sun disc. This type of eclipse occurs
when the size of the disk of the Moon is smaller
than the Sun disc. So that when the disc Moon
is in front of the disc of the Sun, not the entire
disk of the Sun will be covered by a disk of the
Moon. The sun disc portion which is not
covered by a disk of the Moon, located in the
disk around the moon and looks like a luminous
ring.
Hybrid eclipse, a total eclipse and the shift
between the rings. At a certain point on the
earth's surface, this eclipse appears as a total
eclipse, whereas at other points appear as a
ring eclipse. Relatively rare hybrid eclipse
Pendidikan Fisika
Universitas Ahmad Dahlan
Palembang, Sumatra:
07.21
Palu, Sulawesi: 08.38
Ternate, Malaku: 09.53
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
Corona
Pendidikan Fisika
Universitas Ahmad Dahlan
nimal Behavior Changed At eclipse
Kukang and squirrels that show aggressive activity when the sun is
covered,
so also for the animal species of birds changes, such as seeking
protection during a solar eclipse.
ordinary bats are nocturnal going back out to look for food because
she thought the night had come.
Pendidikan Fisika
Universitas Ahmad Dahlan
Pendidikan Fisika
Universitas Ahmad Dahlan
TSUNAMI
Presented by:
PUTRI EDRYNA LARASATI
1310007008
Pendidikan Fisika
Universitas Ahmad Dahlan
TSUNAMI
earthquake
shifting plates
a volcanic eruption.
The tsunami also often mistaken as a tidal
wave.
However, the actual tsunami wave has nothing to
do with the events of the tide. Therefore, to avoid
misinterpretation, oceanographers often use the
term seismic sea waves (seismic sea wave) to refer
to the tsunami, which is scientifcally more
accurate.
Pendidikan Fisika
Universitas Ahmad Dahlan
Cause of the
Tsunami?
Vertical movement in the Earth's crust, caused
the seabed to rise or may fall suddenly, as a
result there was a disturbance in the balance of
seawater. This resulted in the energy fow of
sea water, which when it reached the coast
into big waves resulting tsunami.
In the deep ocean, tsunami waves traveling at speeds
of up to 1000 km per hour. Equals the speed of the
aircraft
The speed
wave of a
tsunami
depends on the depth of the sea where the waves
occurred, where speed can reach hundreds of kilometers
per hour. When the tsunami reaches the shore, its speed
will be approximately 50 km / h and energy is very
damaging coastal path. Damage and casualties that
occur due to
the TsunamiFisika
can be caused by
Pendidikan
waterhammer
and material
carried
by the wave fow
Universitas
Ahmad
Dahlan
Tsunami by
physics?
Explanation tsunami wave can be approximated by
the incident transverse wave propagation. Wave
energy is a function of the height / depth and fast
propagation. While the height of the wave itself is
affected by the wavelength. Pajtang enormous
tsunami wave which is about hundreds of kilometers
and are as shallow waves. Shallow wave itself is a
water wave when the ratio of the depth to the
wavelength
is smaller than 0.05.
Well magnitude shallow
wave
propagation speed can be determined
by
g is the acceleration due to gravity
V=
d is the depth of water
Pendidikan Fisika
Universitas Ahmad Dahlan
What happens at the time of the
tsunami wave energy enters shallower
region?
It turns out very little reduction of wave energy and
wave energy can even be said to be fxed. This is in
accordance with the principle of the rate of energy loss
(energy loss rate) on a traveling wave is inversely
proportional to its wavelength. So in conclusion with
large wavelength (eg tsunami wave), it will be less
energy is lost, so that it can be said as before, the
tsunami wave energy fxed / constant. ???
With the constant energy and a decrease in the speed
of tsunami waves as reduction in water depth will
impact on the ocean wave height increases. In fact,
according to scientists tsunami wave velocity of 300
m / s, then the wave height will be increased by 30
m. It is remarkable high tsunami wave
Pendidikan Fisika
Universitas Ahmad Dahlan
Tips for survivors of the tsunami wave
- If a big earthquake and tsunami potential
immediately to evacuate and stay away from
areas of the seashore
-Up to place high approx could not be achieved
by water waves
-Use hill / mountain area nearby as you and
your family evacuation destination
- Beware if you suddenly see the tide is low, it
could be a sign of a tsunami.
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Early signs of the arrival of the tsunami
1. Starting an earthquake
2. Listen to the rumbling sounds
3. Note the decrease in sea water
4. Always be aware of the first wave
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Facts of The occurrence of Tsunami in
Indonesia
1. The Tsunami On August 26, 1883 due to the
eruption of Krakatoa killed more than 36,000
people
2. On 17 July 2006, earthquake and tsunami hit
the southern island of Java, the victims more
than 500 peoples
3. Tsunami that occurred on December 26, 2004, a massive earthquake
that caused tsunami claimed the lives of more than 250,000 in South
Asia, Southeast Asia and Africa. Tsunami height of 35 m. Aceh and
Nias one of the areas that impact most severely damaged by the waves
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LIGHTNING
By : Puspa Arum Juwitasari
Pendidikan Fisika
Universitas Ahmad Dahlan
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•
During the thunderstorm, precipitation
particles (water droplets and ice crystals)
in the higher region of the clouds will
then collide with each other as they rub
against each other in strong currents of
air. This strong air current here is due to
the ascending (rising) and descending air
in the updrafts and downdrafts of the
storm. As a result, this colliding and
rubbing of many water droplets and ice
Fisika
crystals creates aPendidikan
static electrical
charge.
Universitas Ahmad Dahlan
•
Thus, causing areas of negative
and positive charge to develop
within the thunderstorm. Some
of the ice (snow) crystals and
water droplets will therefore
become positively charged (+
plus sign), while others become
negatively charged (- minus
sign). The positive and negative
electrical charges in the cloud
then separate from each other
where the positively charged
snow crystalsPendidikan
moves to Fisika
the
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When the diference in the charges at the lower section
of the cloud becomes large enough, whereby reaching a
certain strength, a giant "spark" occurs causing the fow
of electricity (electrical energy ) to be released through
the air to another point that has an opposite charge. This
release of electrical energy is called a leader stroke
which may be from one cloud to another (Cloud-to-Cloud
Lightning) or from one section of the cloud to another
(In-Cloud Lightning) or from cloud to the ground (Cloudto-Ground Lightning). Once a connection is made and the
path is complete, a surge of electrical current moves in
the opposite direction back to the cloud and produce a
fash of light which we call lightning. This process is
called the main stroke.
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Day and
Night
Pendidikan Fisika
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• Surah Al-Furqan ; verse 47
َ• وَهُ ََ الوَِي جَعَلَ لَكُمُ اللوَْلَ لِبَاسا وَالّوَْمَ سُبَات وَجَعَل
الّوََا َر نُشَُرا
• Artinya:” Dan Dialah yang
menjadikan untuk kamu malam
sebagai pakaian da tidur sebagai
pemutus dan Dia menjadikan siang
untuk bertebaran”.(Al-Furqan:47)
Pendidikan Fisika
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• Surat Yasin Ayat 37-40
وَالشومَُْ تَجْرِّي لِمُسْتَقَرّ ولََا.٣٨ َ وَآيَةٌ ولَُمْ اللوَْلُ نَسْلَخُ ِّّْهُ الّوََارَ فَ ِإذَا هُم ّظُْلِمَُن٣٧ •
َُْ َل الشوم.٤٠ م
ِ حتوَ عَادَ كَا ْلعُرّْجَُنِ ا ْلقَدِي
َ َ وَا ْلقَمَرَّ قَدو ْرنَاهُ ََّّازِل. ٣٩ م
ِ َِعزِيزِ ا ْلعَل
َ ْذَ ِلكَ تَقْدِيرُّ ال
َيَّبَغِي َلََا أ َن تُدْرِكَ ا ْلقَمَرَّ و ََل اللوَْلُ سَابِقُ الّوََارِ َوكُل فِي فَلَكٍ يَسْبَحَُن
• Artinya:“ Dan suatu tanda (kekuasaan Allah yang besar) bagi
mereka adalah malam; Kami tanggalkan siang dari malam itu,
maka dengan serta merta mereka berada dalam kegelapan, dan
matahari berjalan ditempat peredarannya. Demikianlah ketetapan
Yang Maha Perkasa lagi Maha Mengetahui. Dan telah Kami
tetapkan bagi bulan manzilah-manzilah, sehingga (setelah dia
sampai ke manzilah yang terakhir) kembalilah dia sebagai bentuk
tandan yang tua. Tidaklah mungkin bagi matahari mendapatkan
bulan dan malampun tidak dapat mendahului siang. Dan masingmasing beredar pada garis edarnya”. (Yasin: 37-40)
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What Causes Day and
Night?
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• Rotation of the Earth: The Earth
orbits around the Sun. It takes one
year to go around the Sun one
complete time. The Earth also
rotates, or spins, on its axis. It takes
one day to spin around itself one
complete time. The Earth's axis is
not straight up and down, but tilted
at an angle of 23.5 degrees. The
rotation is what causes the change
from day to night. This tilt is
responsible for having seasons. If
the Earth were not tilted, we would
have the same season all year long.
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Why Does the Earth Spin?
4.54 BILLION YEARS AGO, OUR
SOLAR SYSTEM FORMED
WITHIN A CLOUD OF
HYDROGEN NOT UNLIKE THE
ORION NEBULA, OR THE EAGLE
NEBULA, WITH ITS AWESOME
PILLARS OF CREATION.
THEN, IT TOOK SOME KICK,
LIKE FROM THE SHOCKWAVE
FROM A NEARBY SUPERNOVA,
AND THIS SET A REGION OF
THE COLD GAS FALLING
INWARD THROUGH ITS
MUTUAL GRAVITY. AS IT
COLLAPSED, THE CLOUD
BEGAN TO SPIN.
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IT’S THE
CONSERVATIO
N OF
ANGULAR
MOMENTUM.
THE EARTH SPINS BECAUSE IT
FORMED IN THE ACCRETION
DISK OF A CLOUD OF
HYDROGEN THAT COLLAPSED
DOWN FROM MUTUAL
GRAVITY AND NEEDED TO
CONSERVE ITS ANGULAR
MOMENTUM. IT CONTINUES
TO SPIN BECAUSE OF
INERTIA.
THE REASON IT’S ALL THE
SAME DIRECTION IS BECAUSE
THEY ALL FORMED TOGETHER
IN THE SAME SOLAR NEBULA,
BILLIONS OF YEARS AGO.
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Day and Night
The Earth exhibits two different kinds of motion. One is rotation around
its own axis and another movement is it revolves around the sun in a
fixed orbit. The spinning of the Earth around its own axis causes day and
night. It takes 24 hours to complete one rotation. However, sunlight
shines only on the half of the Earth facing the Sun. That half has day the
other half is dark and has a night.
This phenomenon can also be observed with the help of a torchlight or a
table lamp focused on a globe, which is made to rotate.
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Sukron Katsiiron
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How
Rainbow is
Formed
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Rainbow
Rainbow is one of optic
phenomenon that happens
in the atmosphere of the
earth naturally. We can see
it at mountain range, or
when it is cloudy, or when
it is raining
and rising of
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Shape of Rainbow
As we know, we jtust can see it a half
of circle form, but actually the rainbow
is a circle form. We can see it
perfectly, if it is seen by standing in
the high place like in the air plane or
standing on top of mountain. It is real
that rainbow is a circle form not like
parabola form. On the ground, we can
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not see it perfectly
but only half of
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Interestingly, the location of
the rainbow totally depends on
the position of the person who
can see it, and on the position
of the sun relative to that
person. If the sun is shining
towards your eyes, you will
never see a rainbow, the sun
needs to be behind you. you
Fisika to
will never Pendidikan
be
able
see
a
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How this is happened ?
Light from the sun enters the
raindrops, and because the density of
the rain water is different from the
density of the air, the sunlight refracts
that is, it bends slightly. When the light
bends, it splits into a spectrum of
colored light because different colors
of light refract at slightly different
angles.
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Some of this colored light is
refected back off the internal
surface of the raindrop, similar light
is refracted by the water and
refected on the mirror in the water.
When we see this refected light,
the reason why we see each color
separately is that each color of light
bends back out of the raindrop at a
slightly different
angle.
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So we see all red light
at an angle of 42
degrees between us
and the sun, and all
violet light at an angle
of 40 degrees between
us and the sun and
the other colors at
angles between 40
and 42 degrees. You
can see a diagram of
how this worksPendidikan
in thisFisika
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The Jabal Magnet
Phenomena
Jheni Puspita Sari
1310007002
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Are you know about jtabal magnet?
the vehicle will undergo a magnetic pull on Jabal Magnet Medina,
Saudi Arabia
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What happened?
Room Illusion
this is jtust an illusion, an illusion is
caused by the topography factor
(landschap) local.
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What happened?
When the car is running in a fat, then that is invisible to our eyes is that
there are trees on both sides of the road. By simple logic, automatically in
the brain that this tree will stand upright. Likewise, when the road to
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decline, then this tree will remain visible above the vertical upright.
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What happened?
When the road was sloping whereas we often use the tree as a "vertical
reference" also tilted it happens like in the picture next to this. The car
actually reverse itself when the engine is off. The actual road was sloping
direction toward the right (lower right side), but these trees were skewed
in the opposite direction to the
slope of the
road. So that our minds
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"fooled" by our eyes that seemed
to see the
slopeDahlan
of the road to the left.
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Ahmad
Why these trees can be tilted like
that?
Soil Creep
Symptoms of soil creep is characterized by
the shape of tree is tilted or curved.
Symptoms of soil creep is often
characterized by the shape of the tree is
tilted or even curved. Soil profle will be
visible on the curved surface. Curvature of
the upper soil (soil) this happens because
the heating process (expansion) and
cooling (contraction) occurring repeatedly.
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Why these trees can be tilted
like that?
1. At the time of the day,the ground will
foating due to heat. Then the surface
of sloping ground will expand following
the line 1 → 2. That perpendicularly
from the surface of the feld.
2. At night time there is a reduction in
temperature or cooling the ground. This
cooling does not return from the point 2
to original point (1), but what happens is
a decrease of point 2 → 3 vertically as
follows gravity.
3. This process resulted in the change of
resultant position of the points of the
surface. Because this process is repeated
day and night, as well as the summer
and winter, then ground it becomes
visible curve.
4. This curvature will affect the trees also
electricity poles that stuck on the surface
the land.
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