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The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed

• stopped

• reflected

• refracted

Tags

NGSS.MS-PS4-2

Light bending as it passes through a rain drop is an example of...

• Refraction

• Reflection

Tags

NGSS.MS-PS4-2

The drawing below illustrates a wave in motion. What is the name given to the substance through which a wave travels?

• A frequency

• a state

• a crest

• a medium

Tags

NGSS.MS-PS4-1

At higher altitudes, air is less dense. In other words, the number of particles in a given volume of air at sea level is greater than the number of particles in the same volume of air at a higher altitude. What will happen to a sound at higher altitudes?

• The speed of the sound waves will be faster at high altitudes.

• The sound waves will travel slower at a higher altitude.

• The speed of the sound waves will be the same at sea level and at higher altitudes.

• The sound waves will have a smaller amplitude.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Submarines use sonar or sound waves to locate underwater objects as shown in the drawing below. What does sonar depend upon to locate an underwater object?

• the pitch of the sound waves traveling through the water

• the speed of the sound waves moving through the water

• the frequency of the sound waves traveling through the water

• the amplitude of the sound waves traveling through the water

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The properties of a wave can change when it passes from one material into another material and also within a material. What will vary if the wavelength of a sound changes in a material?

• the wave's medium

• the wave's amplitude

• the wave's speed

• the wave's frequency

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

What happens to the speed of light as it exits the air and enters a glass of water?

• It speeds up

• It remains constant

• It slows down

• It first slows down and then speeds up

Tags

NGSS.MS-PS4-2

Which of the following has the greatest effect on refraction?

• The length of the light wave as it approaches the medium

• the speed of the light wave as it travels through the medium

• the width of the light wave as it exits the medium

• the reflection of the light wave off the medium's surface

Tags

NGSS.MS-PS4-2

A wave has an amplitude of 6 m, a wavelength of 12 m and frequency of 2 Hz. Calculate the speed of the wave

• 3 m/s

• 6 m/s

• 12 m/s

• 24 m/s

Tags

NGSS.MS-PS4-1

A wave has a frequency of 4 hertz. Calculate the period of the wave.

• 4 sec

• 1 sec

• .25 sec

• Cannot be calculated

Tags

NGSS.HS-PS4-1