1) What type of energy allows us to see the world? a) sound b) heat c) light d) electricity 2) What is refraction? a) The spreading of light onto colours b) The bending of light as it passes between different materials c) The reflection of light off a shiny surface d) The blocking of light by an object 3) Why does light bend when it passes from air to water? a) Because it changes direction randomly b) Because it slows down in the denser medium c) Because the water absorbs the light d) Because the air pushes the light down 4) In which medium does light travel fastest? a) glass b) water c) air d) vacuum 5) What happens to the speed of light when it enters a denser medium like glass or water? a) it speeds up b) it stops completely c) it slows down d) it stays the same 6) What is dispersion? a) The bending of light b) The splitting of white light into different colours c) The absorption of light by a surface d) The reflection of light from a mirror 7) Which of the following lists shows the colours of the rainbow in order? a) Blue, red, green, yellow, indigo, orange, yellow b) Blue, red, green, yellow, violet, orange, indigo c) Violet, indigo, red, yellow, orange, green, blue d) Green, blue, red, orange, yellow, violet, indigo 8) Why do rainbows form? a) Because light reflects off raindrops b) Because light refracts and disperses through raindrops c) Because sunlight is absorbed by water d) Because clouds scatter all colours of light 9) How do First Nations Peoples of Australia use refraction in spearfishing? a) They avoid looking into the water b) They use light to attract the fish c) They adjust their aim because the fish appears in a different position due to refraction d) They wait for the fish to come to the surface 10) Why does a fish appear in a different position under water? a) Because water magnifies the fish b) Because the fish swims too fast c) Because light is reflected off the surface d) Because light bends as it passes through the water

Rainbows and Refraction: seeing the light

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