Light and Sound Review

Which way of communicating will NOT work for astronauts in outer space?

• ringing a bell
• flashing a light
• using a radio
• waving a hand

Which diagram of a sound wave represents the sound with the highest pitch?

• A
• B
• C
• D

What causes sound?

• something vibrating
• a part of a car
• an object moving through the air
• light energy

Which material does sound travel through the fastest?

• air 
• outer space
• water
• brick

What happens to a sound if the frequency of the vibrations increases?

• the volume decreases
• the pitch increases
• the sound echoes
• the sound gets louder

You pluck a guitar string. It makes a sound. What causes the sound?

• inertia
• gravitational pull 
• vibration
• pitch

Reflection occurs when...

• light bends
• light shines in your eyes
• light goes through a surface
• light strikes a surface and bounces back

Which of these processes does the picture illustrate?

• reflection
• refraction
• absorption
• scattering

We see colors of objects because they...

• Absorb and reflect light
• Transmit and reflect light
• Refract and reflect light
• Absorb and refract light

Which type of lens bulges in the middle?

• Concave
• Convex
• Flat 
• Glass