Waves & Electromagnetic Spectrum Benchmark Review

What is a wave?

• solid object moving in a straight line

• repeated disturbance that transfers energy

• force that pulls objects to the ground

• change in temperature over time

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What does amplitude measure in a wave?

• The number of waves per second

• The distance between waves

• The height of the wave from rest position

• The color of the wave

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What does frequency describe?

• How tall a wave is

• The direction the wave travels

• How often a wave passes a point in a second

• The length of the wave

What is wavelength?

• The speed of the wave

• The number of waves per second

• The distance from crest to trough

• The distance between two corresponding parts of a wave

What is a Hertz (Hz)?

• The unit of speed for a wave

• A tool used to measure wave height

• A unit of frequency (waves per second)

• A type of electromagnetic wave

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If a wave has a frequency of 42 Hz, how many wavelengths occur in 4 seconds?

• 10

• 42

What is the relationship between wavelength and frequency?

• They are always equal

• Higher frequency means longer wavelength

• Higher frequency means shorter wavelength

• There is no relationship

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What is reflection?

• Bending of a wave as it enters a new medium

• Wave energy being taken in

• Bouncing back of a wave from a surface

• Scattering of wave in many directions

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What is refraction?

• Absorption of light

• Bending of light as it passes into a new medium

• Light bouncing off a surface

• Light being broken into colors

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What is an electromagnetic wave?

• A wave that needs a medium to travel

• A mechanical wave that travels through solids

• A wave made of electric and magnetic fields that can travel through space

• A sound wave produced by electric signals

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