Electromagnetic Waves

What can travel around the Earth eight times in one second?

• A car

• A bird

• A sound wave

• Light

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What are microwaves used for in the kitchen?

• Cooling food

• Cutting food

• Freezing food

• Heating up food

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Which part of the electromagnetic spectrum do we sense as heat?

• Infrared

• X-rays

• Ultraviolet

• Gamma rays

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What technology uses visible light to carry internet communication?

• Microwaves

• Infrared signals

• Fibre optic wave guides

• Radio waves

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What can excessive exposure to ultraviolet light cause?

• Improved vision

• Cell damage

• Better skin

• Increased strength

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