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Science Revision 123

Science Weakness Revision

QuestionAnswer
How do we see non-luminous objetcs? Light bounces off them and enters our eyes.
How did Roemer work out the speed of light? He observed the moons of Jupiter at different time in the Jupiter orbit.
Can light bend around objects? No, light takes the quickest path between any 2 points. Can't bend either.
Light can be... transmitted, reflected or absorbed.
How rough surfaces affect the reflection of light? Rough surfaces cause light to reflect in all direction, scattering the light unevenly.
What is the change of direction of light called? Refraction.
When does refraction happen? When light ttravels from one transparent substance to another.
How can we split up white light? Prism. When light passes through a prism the different colours are refracted by different amounts.
What are colours in the spectrum? Red, orange, yellow, green, blue, indigo and violet.
Created by: kdao
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