Petunjuk Praktikum Dan Lks Yati.docx

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Petunujuk Praktikum dan Lembar Kegiatan Siswa Cahaya dan Sifat-sifatnya Kelas : V Sekolah: MIS AL-AMANAH LOKOBOKO

Kompetensi Dasar 6.1 Mendeskripsikan sifat-sifat cahaya

Petunjuk Penggunaan LKS: 1.

Bacalah LKS ini dengan cermat. Tanyakan hal-hal yang belum anda pahami pada gurumu.

2. Ketika menggunakan LKS ini sebagai panduan, maka anda melakukan tahap-tahap sesuai metode ilmiah. LKS ini mengandung konsep-konsep yang penting oleh karena itu Kalian harus mencari tahu sendiri, kalian harus berpikir, berdiskusi, dan kalian harus menyelesaikan tugas kalian dengan cermat. 3. Lakukan percobaan berikut ini dan diskusikan dengan kelompokmu 1.

masing-masing kemudian isilah lembar hasil percobaan kalian pada lembar jawaban yang telah disediakan!

A. Judul Praktikum I : ARAH RAMBAT CAHAYA B. Tujuan Praktikum : Membuktikan arah rambat cahaya C. Alat dan Bahan : 1. Lampu senter 2. Dua kotak kardus 3. Gunting 4. Kertas HVS

D. Langkah kerja 1. Sediakan lampu senter dan kotak kardus 2.

Guntinglah sisi bawah kardus secara lurus ke atas

3.

Letakkan kertas HVS di bawah sisi kardus yang digunting

4.

Arahkan cahaya lampu senter melalui sisi yang digunting pada kotak kardus

5.

Tariklah garis pada sinar yang melalui kotak kardus

6.

Kardus yang satunya lagi biarkan saja kemudian arahkan cahaya senter ke kardus yang tanpa digunting

LEMBAR KEGIATAN SISWA I 1

JUDUL PERCOBAAN ............................................................................................................................. .................................................................................................

2

TUJUAN PERCOBAAN ............................................................................................................................. .................................................................................................

3

ALAT DAN BAHAN ................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................. ... ............................................................................................................................. ........................................................................................

4

LANGKAH KERJA .............................................................................................................................................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ................................................................................................. ................................................................................................................................................. ............................................................................. ................................................................................................................................................................................... ........................................... ...................................................................................................................................................................................................................

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HASIL PERCOBAAN .............................................................................................................................................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ......................................................................................

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KESIMPULAN .............................................................................................................................................................................................................................. ............................................................................................................................................................... ............................................................... ...................................................................................................................................................................................................................

A. Judul Praktikum II : Perambatan Cahaya melalui benda B. Tujuan Praktikum

: Mengamati perambatan cahaya pada berbagai berbagai benda

C. Alat dan Bahan : 1. Lampu senter 2. Benda yang akan diuji (misalnya gelas kaca bening, mika bening, kertas karton, pecahan

keramik,batu)Dua kotak kardus D. Langkah kerja 1. Letakkan semua benda yang akan diuji di atas meja 2. Arahkan lampu senter pada benda yang diuji satu per satu 3. Catatlah apakah yang terjadi pada cahaya setelah melalui benda yang diuji 4. Keterangan: tripleks yang dilapisi kertas putih dapat diganti dengan dinding tembok

E. Hasil Percobaan (Berilah tanda pada sifat benda yang dikenai cahaya!) No Benda yang Diuji Tembus Tidak tembus Gelas kaca 1 bening 2 Pecahan keramik 3 Mika bening 4 Kertas karton 5 Batu

LEMBAR KEGIATAN SISWA II 1

JUDUL PERCOBAAN ............................................................................................................................. .................................................................................................

2

TUJUAN PERCOBAAN .......................................................................................................................................... ....................................................................................

3

ALAT DAN BAHAN ................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................. ... ............................................................................................................................. ........................................................................................

4

LANGKAH KERJA .............................................................................................................................................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ................................................................................................. ................................................................................................................................................. ............................................................................. ................................................................................................................................................................................... ........................................... ...................................................................................................................................................................................................................

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HASIL PERCOBAAN .............................................................................................................................................................................................................................. ............................................................................................................................. ................................................................................................. .............................................................................................................................................................. ................................................................ ................................................................................................................................................................................................ .............................. ...................................................................................................................................................................................................................

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KESIMPULAN .............................................................................................................................................................................................................................. ............................................................................................................................. ................................................................................................. ............................................................................................................................. ......................................................................................

A. Judul Praktikum III : Pemantulan cahaya B. Tujuan Praktikum

: Mengamati pemantulan cahaya pada berbagai berbagai benda

C. Alat dan Bahan : 1. Lampu senter 2. Benda yang akan diuji (misalnya batu, kertas karton gelap, cermin)

D. Langkah kerja 1. Letakkan semua benda yang akan diuji di atas meja 2. Arahkan lampu senter pada benda yang diuji satu per satu 3. Catatlah apakah yang terjadi pada cahaya yang diterima oleh mata kita setelah mengenai benda yang

diuji. E. Hasil Percobaan (Berilah tanda No 1 2 3

Benda yang Diuji batu Kertas karton gelap cermin

pada sifat benda yang dikenai cahaya) Silau

Tidak silau

LEMBAR KEGIATAN SISWA III 1

JUDUL PERCOBAAN ............................................................................................................................. .................................................................................................

2

TUJUAN PERCOBAAN ............................................................................................................................. .................................................................................................

3

ALAT DAN BAHAN .................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................... ................................................................................................................................................................................................................. ................... .....................................................................................................................................................................................................

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LANGKAH KERJA .................................................................................................................................................................................................................................. ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... ................................................................................................................................. ................................................................................................. ............................................................................................................................................................... ................................................................... ...........................................................................................................................................................................................

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HASIL PERCOBAAN .................................................................................................................................................................................................................................. ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ......................................................................

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KESIMPULAN .................................................................................................................................................................................................................................. ........................................................................................................................................................... ....................................................................... ...........................................................................................................................................................................................................

A. Judul Praktikum IV : Pembiasan cahaya B. Tujuan Praktikum

: Mengamati pembiasan cahaya

C. Alat dan Bahan : 1. Segelas air 2. Benda yang akan diuji adalah pensil

D. Langkah kerja 1. Letakkan semua benda yang akan diuji di atas meja 2. Masukan pensil dalam gelas yang berisi air 3. Catatlah apakah yang terjadi pada pensil dalam air tersebut!

LEMBAR KEGIATAN SISWA IV 1

JUDUL PERCOBAAN ............................................................................................................................. .................................................................................................

2

TUJUAN PERCOBAAN ............................................................................................................................. .................................................................................................

3

ALAT DAN BAHAN .................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................... ................................................................................................................................................................................................................. ................... ........................................................................................................................................................................................................................

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LANGKAH KERJA .................................................................................................................................................................................................................................. ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... ............................................................................................................................. ..................................................................................................... .................................................................................................................................................................................................................................. .............................................................................................................................................................. ........................................................

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HASIL PERCOBAAN .................................................................................................................................................................................................................................. ........................................................................................................................................................... ....................................................................... .................................................................................................................................................................................................................................. ....................................................................................................................................................................................................................... ........... ......................................................................................................................................................................................................................

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KESIMPULAN .................................................................................................................................................................................................................................. ............................................................................................................................. ..................................................................................................... ............................................................................................................................. .........................................................................................

A. Judul Praktikum V : Penguraian cahaya B. Tujuan Praktikum

: Mengamati penguraian cahaya

C. Alat dan Bahan : 1. Busa sabun 2. Alat peniup pada Mainan balon air

D. Langkah kerja 1. Tiuplah busa sabun yang terdapat dalam wadah maianan balon air 2. Catatlah bagaimanakah warna pada balon air yang dihasilkan dan apa sajakah komponen warna pada balon air tersebut!

LEMBAR KEGIATAN SISWA V 1

JUDUL PERCOBAAN ............................................................................................................................. .................................................................................................

2

TUJUAN PERCOBAAN ............................................................................................................................. .................................................................................................

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ALAT DAN BAHAN .................................................................................................................................................................................................................................... ........................................................................................................................................................................ ............................................................ .................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................ .... ............................................................................................................................. ...........................................................................................

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KESIMPULAN .................................................................................................................................................................................................................................. ............................................................................................................................. ..................................................................................................... ...................................................................................................................................................... ................................................................