7th EOY Review: Unit 3

Which type of electromagnetic radiation from the sun is responsible for causing sunburns?

• Infrared

• Ultraviolet

• Visible light

• Radio waves

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What happens to white light when it passes through a prism?

• It disappears

• It splits into a spectrum of colors

• It becomes ultraviolet light

• It turns into infrared light

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Which term describes the bending of light as it passes from air into water?

• Reflection

• Refraction

• Absorption

• Diffusion

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When you look at yourself in a mirror, which property of light are you observing?

• Absorption

• Reflection

• Refraction

• Transmission

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Which type of wave travels fastest in air: light waves or sound waves?

• Light waves

• Sound waves

• Both travel at the same speed

• Neither can travel in air

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What happens to the speed of sound when it moves from air into water?

• It increases

• It decreases

• It stays the same

• It stops completely

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A student shines a flashlight through a glass of water and notices a rainbow on the other side. Which property of light is being demonstrated?

• Reflection

• Refraction

• Absorption

• Scattering

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If you wear a black shirt on a sunny day, it feels warmer than a white shirt. Which property of light explains this?

• Reflection

• Refraction

• Absorption

• Transmission

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A student places a pencil in a glass of water and observes that the pencil appears bent at the water's surface. Which property of light is responsible for this effect?

• Reflection

• Refraction

• Absorption

• Diffraction

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A lifeguard hears a whistle from across the pool. The sound reaches her faster through the water than through the air. What does this scenario illustrate about sound waves?

• Sound travels slower in water than in air

• Sound travels at the same speed in all materials

• Sound travels faster in water than in air

• Sound cannot travel through water

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