Waves: Reflection, Refraction, and More (CIA 1 pt1)

Which of the following best describes the relationship between the amplitude of a mechanical wave and its energy?

• The energy of a mechanical wave is independent of its amplitude.

• The energy of a mechanical wave increases as the amplitude increases.

• The energy of a mechanical wave decreases as the amplitude increases.

• The energy of a mechanical wave is only affected by its frequency.

Tags

GA.SPS9.a.

Which statement correctly compares electromagnetic waves and mechanical waves?

• Both require a medium to travel.

• Only electromagnetic waves require a medium to travel.

• Only mechanical waves require a medium to travel.

• Neither requires a medium to travel.

Tags

GA.SPS9.b.

If a light wave passes from air into water, what happens to its speed and direction?

• The speed increases and the wave bends away from the normal.

• The speed decreases and the wave bends toward the normal.

• The speed remains the same and the wave does not bend.

• The speed decreases and the wave bends away from the normal.

Tags

GA.SPS9.c.

Which of the following best explains what happens to the speed of sound when it travels from air into water?

• The speed of sound decreases because water is denser than air.

• The speed of sound increases because water is denser than air.

• The speed of sound remains the same in both media.

• The speed of sound decreases because water is less dense than air.

Tags

GA.SPS9.d.

Which scenario best illustrates the Doppler Effect?

• A light beam bending as it enters glass from air.

• The pitch of a siren increasing as an ambulance approaches you.

• Water waves reflecting off a wall.

• The amplitude of a wave increasing as energy increases.

Tags

GA.SPS9.e.

A student collects data on the frequency and wavelength of different electromagnetic waves. Which conclusion is supported by the data?

• As frequency increases, wavelength increases.

• As frequency increases, wavelength decreases.

• Frequency and wavelength are not related.

• As frequency increases, wavelength remains constant.

Tags

GA.SPS9.a.

Given a table of properties for sound and light waves in different media, how would you explain the difference in their speeds?

• Sound travels faster in solids than in gases, while light travels slower in solids than in gases.

• Both sound and light travel faster in solids than in gases.

• Both sound and light travel slower in solids than in gases.

• Sound and light travel at the same speed in all media.

Tags

GA.SPS9.d.

A teacher asks students to model the phenomenon of diffraction. Which setup would best demonstrate this concept?

• Shining a light through a narrow slit and observing the spreading pattern on a screen.

• Bouncing a ball off a wall.

• Measuring the temperature change in water.

• Observing a pencil in a glass of water appearing bent.

Tags

GA.SPS9.c.

A student observes that the pitch of a train whistle drops as the train moves away. How can this observation be explained using a model of the Doppler Effect?

• The frequency of the sound waves increases as the train moves away.

• The frequency of the sound waves decreases as the train moves away.

• The amplitude of the sound waves increases as the train moves away.

• The wavelength of the sound waves decreases as the train moves away.

Tags

GA.SPS9.e.

Which of the following best contrasts electromagnetic and mechanical waves?

• Electromagnetic waves can travel through a vacuum, while mechanical waves cannot.

• Mechanical waves can travel through a vacuum, while electromagnetic waves cannot.

• Both can travel through a vacuum.

• Neither can travel through a vacuum.

Tags

GA.SPS9.b.