Understanding Waves and Energy

What is a wave?

• A solid object that remains stationary

• A disturbance that transfers energy from place to place

• A type of sound

• A form of light

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Which of the following is a type of mechanical wave?

• Electromagnetic wave

• Transverse wave

• Sound wave

• Both B and C

The medium in wave terminology is the (a)   through which a wave travels.

• The speed at which a wave travels
• The material through which a wave travels
• The height of a wave
• The frequency of a wave

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How does a transverse wave move through a medium?

• Parallel to the direction of the wave

• At right angles to the direction of the wave

• In a circular motion

• In a zigzag pattern

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Calculate the speed of a wave with a wavelength of 2 meters and a frequency of 5 Hz.

• 10 m/s

• 7 m/s

• 15 m/s

• 5 m/s

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What happens to a wave when it is absorbed by a medium?

• It speeds up

• It is reflected

• Its energy is transferred to the medium

• It passes through unchanged

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Explain why sound waves travel faster in liquids and solids than in air.

• Because liquids and solids are denser than air

• Because air is a better conductor of sound

• Because sound waves are electromagnetic

• Because air has more particles

The effect of high amplitude on sound is (a)  

• Quieter sound
• Louder sound
• No change in sound
• Lower frequency

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NGSS.MS-PS4-1

The highest point of a transverse wave is called the (a)   .

• Trough
• Crest
• Amplitude
• Wavelength

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Describe the process of refraction.

• When a wave is absorbed by a medium

• When a wave enters a new medium at an angle and bends

• When a wave bounces off a surface

• When a wave travels in a straight line

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