Light Char, Color, Polarization, & Intensity

Which of the following is not a primary color of light?

• Red

• Yellow

• Green

• Blue

If two identical light bulbs use the same amount of energy, what would cause one of the bulbs to look dimmer than the other?

• The dimmer bulb is further away that the other

• The brighter light is further away than the other

• The dimmer bulb is burning out

• Trick question both bulbs must have the same brightness

Light is a type of energy that travels as an ______________ ____________.

• longitudinal wave
• electric current
• electromagnetic wave
• magnetic wave

Tags

NGSS.HS-PS4-3

light waves are unique in their ability to travel through

• glass

• particles

• empty space (vacuum)

• medium

What is the speed of light in a vacumn?

• 300,000,000 m/s
• 3,000,000 m/s
• 3,000 m/s
• 300 m/s

Tags

NGSS.HS-PS4-1

An electromagnetic wave 

• never moves.

• can travel only through empty space.

• cannot travel through matter.

• can travel through empty space (a vacuum)

Ultraviolet light waves are responsible for causing

• heat strokes
• blue skies
• interference of radio waves
• sunburns

Tags

NGSS.HS-PS4-3

The part of the electromagnetic spectrum that human sees is

• ultraviolet light.
• visible light.
• infrared light.
• x-ray.

Tags

NGSS.HS-PS4-4

What type of electromagnetic wave causes things to heat up and is also given off by hot objects?

• ultraviolet light

• visible light

• infrared light

• x- ray

True or False:

Light waves are able to travel through solids, liquids, gases, or the vacuum of empty space.

• True

• False