Wavs Unit 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.HS-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.

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NGSS.HS-PS4-5

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-PS4-4

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.HS-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

Tags

NGSS.HS-PS4-1

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

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NGSS.HS-PS4-3

NGSS.HS-PS4-5

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.