October 2018 2 12 Report

proszę o przetłumaczenie bez translatora:

1. How many times is light faster than sound?
2. What is a luminous object? Give 3 examples.
3. Name three things that reflect light.
4. How could you make a shadow of an object bigger?
5. What is the name of a line drawn at right angle to the surface of a plane mirror?
6. What is the law of reflection?
7. What happens to the speed of light as it passes from air into water?
8. Complete:
Light .......................................direction as it passes from ................................
material to another.
9. Which colour of white light is refracted most as it passes through a glass prism?
10. What is the only colour of light that can be seen leaving a blue filter?
11. Peter used white light from a spotlight and put a red and a green filter in front of it.
a) No light reached the screen. Explain why?
b) Peter cut a circular hole in the green filter. Describe what Peter would see on the
screen.
12. What happens to all the colours in white light when they hit a black object?


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