How does light travel?

Light is:

• matter

• energy

• wave

What is the earth's primary source of light energy?

• moon

• sun

• waves

• fire

The moon is a…….

• Light Source

• Light Reflector

_____?______ materials do not allow ANY light waves to pass through.

• Opaque

• Transparent

• Translucent

Mirror is a…..

• Light Source

• Light Reflector

_____?_____ materials allow ALL light waves to pass through easily.

• Opaque

• Transparent

• Translucent

Which of the following statements is false?

• Light travels in a curved line

• Light travels in a straight line

• Light travels faster than sound waves

A light year is...

• The speed light travels

• How long it takes light to get to you from the sun

• The distance light can travel in a year

• How many years it takes light to be emitted

What is the speed of light in air?

• about 200,000 km/s

• about 500,000 km/s

• about 300,000 km/s

……….can travel through matters (gas, liquid, solid) and empty space.

sound

light

• sound

• light