Which electromagnetic waves have the highest frequencies and the shortest wavelengths?

• microwaves
• visible light
• gamma rays

Tags

NGSS.HS-PS4-1

Which type of waves are used in broadcasting?

• radio waves
• infrared rays
• x-rays

Tags

NGSS.MS-PS4-3

Which electromagnetic waves are used in devices such as heat lamps & TV remote controls?

• ultraviolet rays
• microwaves
• infrared rays

The point where the rays meet is known as....

• Fire
• the focal point
• refraction
• Plane of the lens

Tags

NGSS.HS-PS4-5

If a light ray is shown on a plane mirror with an angle of incidence of 45 degrees, what is the angle of reflection?

• 15
• 30
• 45
• 90

If you're standing 12 meters in front of a plane mirror, how far away is your image from you?

• 6

• 12

• 18

• 24

Tags

NGSS.MS-PS4-2

Why does green grass look green?

• It reflects all colors except green.
• It absorbs all colors except green.
• It only absorbs green.
• The colors mix to make green.

Which type of lens is shown?

• Concave
• Convex
• Reflective
• Refracting

Tags

NGSS.MS-PS4-2

Light that vibrates in only one direction is called

• luminous.
• illuminated.
• visible light.
• polarized light.

An object is placed 5 cm in front of a plane mirror, how far behind the mirror is the image of the object?

• 2.5

• 5

• 7.5

• 10

Tags

NGSS.MS-PS4-2