Waves and Sound Worksheet

During a thunderstorm, why do you see the flash of lightning before you hear the sound of thunder?

• Sound waves move faster than light waves.

• Light waves travel faster than sound waves.

• Thunder is produced before lightning.

• Light and sound travel at the same speed.

What type of wave can travel through a vacuum, such as space?

• Sound wave

• Light wave

• Ocean wave

• Seismic wave

Which statement is true based on what you know about waves?

• Sound waves can travel through space.

• Light waves require air to travel.

• Sound waves must travel through a medium like air or water.

• Light waves can only travel through solids.

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If the amplitude of sound waves increases, the sound becomes:

• louder

• softer

• higher in pitch

• lower in pitch

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Electromagnetic waves vary in their energy depending on their frequency and wavelength. Waves with higher frequencies have more energy. Infrared rays have longer wavelengths than visible light, so they carry less energy. X-rays and gamma rays have much higher frequencies and can penetrate materials that visible light cannot. This is why they are used in medical imaging, but they can also be harmful if not used carefully.

• A. Infrared rays have more energy than X-rays.

• B. X-rays can penetrate materials because they have higher energy.

• C. Visible light has a higher frequency than gamma rays.

• D. X-rays are completely safe for unlimited exposure.

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Ultraviolet, X-rays, and gamma rays are similar in which of the following ways?

• They are all types of electromagnetic waves with high energy.

• They are all visible to the human eye.

• They all have the same wavelength.

• They are all used for communication signals.

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Which type of electromagnetic radiation has a shorter wavelength than ultraviolet rays?

• Infrared rays

• Radio waves

• Microwaves

• X-rays

Which of the following is not a form of electromagnetic radiation?

• X-rays

• Light waves

• Seismic waves

• Ultraviolet rays

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Why does a black car become hotter than a white car when parked in the sun?

• The black car reflects more sunlight than the white car.

• The black car absorbs more sunlight, converting it into heat.

• The black car allows sunlight to pass through more easily.

• The black car refracts sunlight and spreads heat evenly.

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Which of the following materials is best at reflecting light?

• A. Dark Cloth

• B. Frosted Glass

• C. White Paper

• D. Silver Mirror

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