Lap Praktek Fisika UT PGSD PDGK4107 Praktikum IPA di SD

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

LEMBAR KERJA
PRAKTIKUM IPA DASAR DI SD
GELOMBANG
 Kegitan Praktikum 1
A. KEGIATAN PRAKTIKUM JENIS DAN BENTUK GELOMBANG
Percobaan Jenis-jenis gelombang




Hasil pengamatan
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
Pembahasan
1. ___________________________________________________________________

___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
2. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
3. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
4. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
18

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

___________________________________________________________________
___________________________________________________________________
5. ___________________________________________________________________
___________________________________________________________________

___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________


KESIMPULAN
1. _______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
2. _______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
3. _______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
Percobaan Sifat Pemantulan Gelombang

 Hasil Pengamatan:
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________


Pembahasan:
1. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

2. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
19

PRAKTIKUM IPA DI SD



PDGK4107/MODUL 6

___________________________________________________________________
___________________________________________________________________
Kesimpulan
1.
______________________________________________________________________
___________________________________________________________________
2.

______________________________________________________________________
___________________________________________________________________

Percobaan Sifat Pemantulan Gelombang
 Hasil Pengamatan
1. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
2. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
 Pembahasan
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
 Kesimpulan
______________________________________________________________________

______________________________________________________________________
______________________________________________________________________
B. KEGIATAN PRAKTIKUM GETARAN DAN BUNYI
Percobaan getaran benda pada pegas
 Hasil pengamatan mengukur getaran benda pada pegas
Masa benda = 100 gram
Percobaan
ke
1
2
3
4
5
T=
F=


Tabel 6.1
Pengamatan getaran pada pegas

Waktu 20 getaran
(sekon)

Periode (sekon)

sekon
HZ

Hasil pengamatan pengaruh massa terhadap frekuensi

20

Frekwensi
(hertz)

Tabel 6.2
Pengamatan
PRAKTIKUM
IPApengaruh
DI SD massa

PDGK4107/MODUL 6

terhadap frekuensi

Massa
benda
(gram)
150

200

250

300

Percobaan ke

Waktu 20
getaran

(sekon)

Periode
(sekon)

Frekwensi
(hertz)

Hertz

1
2
3
4
5
1
3
2
4
5

1
3
2
4
5
1
3
2
4
5



Pembahasan
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________



Kesimpulan
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________

Percobaan getaran benda pada ayunan (bandul sederhana)
 Hasil pengamatan
Panjang tali (f) = 100 cm (tetap)

Beban (gr)
20
30
40
50
60
70

Tabel 6.3
Pengamatan getaran benda pada
ayunan (bandul sederhana)

10 T (s)

T periode (s)

21

f frekuensi (Hz)

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

80
90
100
Massa beban (m) = 60 gram

Beban tali (l) (cm)
100
90
80
70
60
50
40
30
20




Tabel 6.4
Pengamatan getaran benda pada
ayunan (bandul sederhana)

10 T (s)

T periode (s)

T2

Pembahasan
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
Kesimpulan
1. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
2. ___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

22

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

Percobaan benda bergetar sebagai sumber bunyi
 Hasil pengamatan

No
.
1.
2.
3.
4.
5.




Panjang mistar
yang menonjol (cm)

Tabel 6.5
Pengamatan benda bergetar sebagai
sumber bunyi
Menimbulkan
bunyi
Keterangan

Ya

Tidak

Pembahasan
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
Kesimpulan
1. ___________________________________________________________________
2. ___________________________________________________________________

Percobaan Resonansi Bunyi
1. Resonansi ayunan bandul
 Hasil pengamatan:

No
.

Tabel 6.6
Pengamatan resonansi bunyi bandul

Bandul A

Bandul B

Bandul C

1.
2.


Pembahasan
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
23

PRAKTIKUM IPA DI SD



PDGK4107/MODUL 6

____________________________________________________________________
____________________________________________________________________
Kesimpulan
1. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
2. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________

2. Resonansi bunyi
 Hasil pengamatan
Tabel 6.7
Pengamatan resonansi bunyi

Resonansi K2

Panjang kolom
udara (l)

Suhu (T)

Keterangan

1(satu)
2(dua)


Pembahasan

____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
 Kesimpulan
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
 Kegiatan praktikum 2
A. KEGIATAN PRAKTIKUM KEPEKAAN INDERA PENDENGARAN MANUSIA
 Hasil pengamatan
24

Tabel 6.8
Pengamatan kepekaan indera pendengaran
manusia

PRAKTIKUM IPA DI SD

Jarak

No.
1.

1m

2.

3m

3.

6m

4.

9m

5.

12 m




PDGK4107/MODUL 6

Telinga setelah ditutup
Telinga kiri Telinga kanan

Telinga sebelum ditutup

Ket.

Pembahasan
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
Kesimpulan
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________

B. KEGIATAN PRAKTIKUM STRUKTUR DAN FUNGSI TELINGA
 Hasil pengamatan
1. __________________________________________________________________
2. __________________________________________________________________
3. __________________________________________________________________
4. __________________________________________________________________
5. __________________________________________________________________
6. __________________________________________________________________
7. __________________________________________________________________
8. __________________________________________________________________
9. __________________________________________________________________
No
.
1.
2.
3.

Nama organ

Tabel 6.9
Bagian-bagian yang menyusun telinga
Beserta fungsinya

Bagian telinga
Luar Tengah Dalam

25

Keterangan

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

4.

5.
6.
7.
8.

9.
10.
11.
12.




Pembahasan
____________________________________________________________________
____________________________________________________________________
1. _________________________________________________________________
a. _________________________________________________________________
b. _________________________________________________________________
c. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
d. _________________________________________________________________
2. _________________________________________________________________
a. ______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
b. ______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
Kesimpulan

26

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
C. KEGIATAN PRAKTIKUM MEKANISME TRANSMISI PENDENGARAN
 Hasil Pengamatan
a. Gendang pendengaran
_________________________________________________________________
_________________________________________________________________
b. Tulang-tulang pendengaran
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
c. Tingkap Oval
_________________________________________________________________
_________________________________________________________________
d. Koklea
_________________________________________________________________
_________________________________________________________________
e. Cairan limfa
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
 Pembahasan
____________________________________________________________________
____________________________________________________________________
 Kesimpulan
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
 Jawaban pertanyaan
1. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
2. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
3. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
27

PRAKTIKUM IPA DI SD

PDGK4107/MODUL 6

_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
4. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
5. _________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________

28