Light and Sound

An ambulance passes, the pitch of the siren suddenly changes because it is moving past. Why?

• The Doppler Effect
• Echolocation
• Sonar
• Interference

What is the material that allows light to pass through called?

• Refract
• Transparent
• Opaque
• Translucent

When light waves bounce off an object, they _______.

• Reflect
• Absorb
• Refract
• Shadow

What is created when an object blocks light?

• Reflect
• Refract
• Absorb
• Shadow

Why do you see lightening before you hear thunder?

• Thunder takes 10 seconds to travel after lightening strikes.
• Sound travels faster than light.
• Sound travels slower than light.
• Sound travels slower than light.

To take in light is to ______ it.

• Absorb
• Refract
• Reflect
• Shadow

What is an object called when it lets some light through but scatters it in many directions?

• Transparent
• Translucent
•   Opaque
•  Absorb

What is it called when light is bent?

• Reflect
• Shadow
• Refract
• Absorb

What is a form of energy that you see?

• Light
• Shadow
• Lens
• Prism

Which material best absorbs sound waves in a room?

• Heavy curtains
• Hardwood floors
• Brick walls
• Cement floors