S7U1L2_How light travels.

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

• opaque

• transparent

• translucent

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

• opaque

• translucent

• transparent

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

What is the speed of light in air?

• about 200,000 km/s

• about 300,000 km/s

• about 500,000 km/s

When the Sun is behind you, your shadow is ...

• in front of you

• behind you

• at the side of you

Translucent objects are...

• Materials that allow all light waves to pass through

• Materials that do not allow light to pass through

• Materials that only allow a little light to pass through

Opaque objects are....

• Materials that allow light to pass through

• Materials that allow no light to pass through

• Materials that allow a little light to pass through

Why do shadows made by the Sun move throughout the day?

• Because the weather changes

• Because the sun appears to move across the sky.

• Because someone moves the objects