What is the amplitude of the waves shown?

• 5 cm

• 10 cm

• 12 cm

• 24 cm

Tags

NGSS.MS-PS4-1

What shape are the lenses in a typical optical telescope?

• W

• X

• Y

• Z

Which statement is true regarding mechanical and electromagnetic waves?

• Both types of waves require a medium.

• Neither types of waves require a medium.

• A mechanical wave requires a medium, but an electromagnetic wave does not require a medium.

• An electromagnetic wave requires a medium, but a mechanical wave does not require a medium.

Why does a white shirt appear white to the human eye?

• The shirt absorbs all wavelengths of light in the visible portion of the electromagnetic spectrum.

• The shirt absorbs light wavelengths at the red and blue ends of the spectrum but reflects colors in the middle of the spectrum.

• The shirt reflects all wavelengths of light in the visible portion of the electromagnetic spectrum.

• The shirt reflects light wavelengths at the red and blue ends of the spectrum but absorbs colors in the middle of the spectrum.

The archer fish is able to see insects above the water's surface. The insect appears to be in a different position than it actually is.

Which property of light is demonstrated?

• absorption

• reflection

• refraction

• scattering

The electromagnetic radiation from distant stars and galaxies reaches Earth even though particles cannot travel through the vacuum of space. What explains how this occurs?

• Electromagnetic waves do not require a medium to travel through space.

• Electromagnetic waves move quickly enough to travel through space without a medium.

• Electromagnetic waves reflect off of planets’ atmospheres to reach Earth.

• Electromagnetic waves vibrate so quickly that they create their own medium through which they travel.

A student views a wave diagram. Assuming all of the waves have the same speed, which diagram shows a second wave that has a higher amount of energy compared to the initial wave?

• 
• 
• 

Tags

NGSS.MS-PS4-1

Echoes are a type of sound wave. How are echoes created?

• absorption

• reflection

• refraction

• transmission

Tags

NGSS.MS-PS4-2

Two objects (A and B) are placed on a table. Object A reflects red light and absorbs all other colors, while object B reflects green light and absorbs all other colors.

What colors will the objects appear?

• Object A will appear red, and object B will appear green.

• Object A will appear black, and object B will appear white.

• Object A will appear white, and object B will appear black.

• Object A will appear green, and object B will appear red.

Tags

NGSS.MS-PS4-2

James ties one end of a rope to a tree and stands at a distance from the tree such that there is slack in the rope. While holding the rope, James moves his arms up and down, creating the formation of a wave as shown. What is the medium that the wave is traveling through?

• air

• hand

• rope

• tree

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2