Unit Wave Review

Visible light represents a very small portion of the electromagnetic spectrum. Radiation to the left in the image, such as microwaves, has a longer wavelength than visible light. Radiation to the right has a shorter wavelength than is observable.

Which radiation has a higher frequency than visible light?

• X-Rays

• Infrared light

• microwave radiation

• the frequency of all radiation is the same

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NGSS.MS-PS4-1

Nina’s measurements, shown in the table here, BEST represent a wave with

• decreasing frequency.

• increasing frequency.

• increasing amplitude.

• decreasing amplitude.

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NGSS.HS-PS4-1

If we compare and contrast electromagnetic waves with sound waves, all BUT one statement is true. That is

• sound waves require a medium to travel while electromagnetic waves do not.

• electromagnetic waves can travel through the vacuum of space while sound waves cannot.

• electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere.

• sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

We spend our lives in visible light without risks to our health. Yet exposure to UV waves in sunlight can cause skin cancer. What is the BEST explanation for this?

• UV waves are longer and carry more energy.

• UV waves are higher frequency and carry more energy.

• UV waves have a lower frequency and carry more energy.

• UV waves travel faster than visible light and have more energy.

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NGSS.HS-PS4-1

NGSS.HS-PS4-4

Each section of the electromagnetic spectrum has a different amount of energy. Gamma rays have the highest energy and radio waves have the lowest energy. Compare the energy of visible light to the energy of a microwave.

• they have the same amount of energy

• visible light has lower energy than microwaves

• visible light has higher energy than microwaves

• it is impossible to tell the energy of light or microwaves

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NGSS.MS-PS4-1

Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy transport. Identify another name for this type of wave motion.

• transverse waves

• pressure waves

• longitudinal waves

• electromagnetic waves

The graph indicates what about the relationship between wavelength and frequency?

• as wavelength decreases, frequency increases

• as wavelength decreases, frequency decreases

• as wavelength increases, frequency increases

• there is no relationship between wavelength and frequency

Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called

• infrared

• microwaves

• ultraviolet

• x-rays

Two people each hold the end of a rope and create waves by moving their arms up and down. This wave is best classified as a transverse wave because ___________.

• both the rope particles and the wave are moving in the same direction

• the wave is moving up and down as the particles of the rope move horizontally.

• the wave is moving horizontally as the particles of the rope move up and down.

• the wave is moving in a parallel direction with the motion of the person's arms.

An old movie poster used a quote "In space, no one can hear you scream!" Why this is true or not true?

• The quote is incorrect, you can hear sound in outer space.

• Sound cannot be polarized. So, you cannot hear sound in space.

• Sound is an electromagnetic wave and needs no medium to travel through.

• Sound needs a medium for the wave to vibrate and there is nothing in space to vibrate.