Energy and Waves Review

Doctors use ultrasound imaging to look at organs and other structures within the body. The device sends high frequency waves into the body. How is the image formed when these waves hit boundaries between body tissues?

• reflection of sound waves to a probe

• absorption of sound waves by tissues

• interference of tissues by the sound waves

• refraction of sound waves to a probe

Tags

NGSS.MS-PS4-2

When John broke his arm, the doctor took an x-ray of John’s arm. John had never seen an x-ray before. He asked the doctor how the x-ray was able to show his bones but not his skin and other tissue. Which explanation would the doctor BEST provide to John?

• X-rays have lower energy than visible light and therefore produce a black background behind the bone image.

• X-rays have higher frequency than visible light and therefore can pass through skin and tissue but not through the bone.

• X-rays have lower frequency than infrared light and therefore penetrates through the bone.

• X-rays have higher frequency than gamma rays and therefore pass through skin and bone.

Tags

NGSS.MS-PS4-2

Wave interference can be constructive or destructive, which changes the amplitudes of the waves that are transmitted. Which of the following is a possible explanation for how wave interference could be used to filter unwanted light in astronaut visors?

• Constructive interference causes the light waves to have lower amplitudes and less energy to penetrate the visor.

• Constructive interference increases the frequency of the waves, which have lower energy to penetrate the visor.

• Destructive interference causes the light waves to have lower amplitudes and less energy to penetrate the visor.

• Destructive interference causes the light waves to have greater amplitudes and less energy to penetrate the visor.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which is true of energy resource acquisition?

• Renewable resources are mostly acquired above Earth’s surface. Nonrenewable resources are mostly acquired below Earth’s surface.

• Nonrenewable resources are mostly acquired above Earth’s surface. Renewable resources are mostly acquired below Earth’s surface.

• Both renewable resources and nonrenewable resources are mostly acquired below Earth’s surface.

• Both renewable resources and nonrenewable resources are mostly acquired above Earth’s surface.

Tags

NGSS.HS-ESS3-2

Move one correct answer to each box. Bats use echolocation to navigate, communicate with each other, and to find food.

• Reflection

• Wave interference

• Refraction

Tags

NGSS.MS-PS4-2

A student heats a casserole in a microwave. After a few minutes the student checks the casserole and finds that one spot is very hot. Another nearby spot in the casserole, however, is much cooler. Which of the following wave properties produced the very hot spot in the casserole?

• conduction

• interference

• refraction

• divergence

Tags

NGSS.MS-PS4-2

Describe the source of energy illustrated above.

Tags

NGSS.MS-ESS3-3

NGSS.MS-PS3-5

A wave is…

• A wrinkle in time

• A disturbance that carries energy

• An energy that carries disturbances

• Any object moving through space

Tags

NGSS.MS-PS4-1

The diagram shows a flashlight that shines brightly when it is turned on. Which BEST describes the energy transformation within the flashlight?

• electrical energy → chemical energy → light energy

• chemical energy →electrical energy → light energy

• thermal energy → chemical energy → light energy

• light energy→ electrical energy → chemical energy

Which best describes the molecular motion of the water particles as the burner supplies heat? The molecular motion will increase as less thermal energy is absorbed. The molecular motion will decrease as less thermal energy is absorbed. The molecular motion will increase as more thermal energy is absorbed. The molecular motion will decrease as more thermal energy is absorbed

• The molecular motion will increase as less thermal energy is absorbed.

• The molecular motion will decrease as less thermal energy is absorbed.

• The molecular motion will increase as more thermal energy is absorbed.

• The molecular motion will decrease as more thermal energy is absorbed

Tags

NGSS.MS-PS1-4