
cahaya dan sifatnya
Presentation
•
Science
•
5th Grade
•
Practice Problem
•
Hard
PARULIAN SIMANJUNTAK
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7 Slides • 0 Questions
1
Cahaya dan Sifatnya
2
POKOK PEMBAHASAN
Materi
Bagaimana cahaya merambat
Mengapa ada bayangan ? apa yang mempengaruhi bentuk bayangan.
Mengapa kita bisa melihat bayangan kita di cermin
Bagaimana pelangi terbentuk.
3
sifat-sifat cahaya
1. Cahaya merambat lurus
2. Cahaya bisa dipantulkan
3. Cahaya bisa menembus benda bening
4. Cahaya bisa dibiaskan
5. Cahaya bisa diuraikan
6. Ketika cahaya dihalangi akan terbentuk bayangan
4
Mengenal Jenis Cermin
5
Pantulan yang sama persis ukurannya dengan diri kita
1. Cermin Datar
6
Bayangan terlihat lebih kecil dan jauh, dan dibelakang terlihat lebih lebar.
digunakan untuk kaca spion dan alat transportasi
2. Cermin Cembung
7
Bayangan lebih besar, jika bercermin dari jauh bayangan akan terbalik, jika mendekat akan kembali tegak dan semakin membasar
Cermin Cekung
Cahaya dan Sifatnya
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