Waves

How is light energy transmitted? Light energy is transmitted as ______.

• A. cells

• B. waves

• C. circles

• D. wires

When you put your ear against a wall, you can hear sounds in the room next door because __________________.

• A. the wall has electricity in it that amplifies the sound

• B. your ear is supported by the wall

• C. sound travels through solid material as well as air

• D. sound is invisible

Vocal cords produce the spoken voice. What do they do to produce sound?

• A. reflect

• B. shrink

• C. swell

• D. vibrate

A mechanical wave moves through matter in a regular pattern. Which one is an example of a mechanical wave?

• A. radio wave

• B. x-ray

• C. rainbow

• D. ocean wave

Which type of wave is caused by the vibration of matter?

• A. microwaves

• B. infrared waves

• C. sound

• D. light

In space, the sound of a hammer struck against a piece of metal will __________________.

• A. not be heard

• B. be amplified

• C. travel in all directions

• D. produce light

What happens to visible light waves when they pass through a prism? The light waves ______.

• A. get brighter

• B. get dimmer

• C. separate into all of the colors of a rainbow

• D. bounce back and do not pass through the prism

Waves that travel through Earth when an earthquake occurs are known as _____________.

• A. seismic waves

• B. infrared waves

• C. cosmic waves

• D. permanent waves

Why are light waves different from all other electromagnetic waves?

• A. they transfer energy

• B. they cannot travel without a medium

• C. they are visible

• D. they are radioactive

The frequency of a vibrating object is defined as ________________.

• A. vibrations per second

• B. period per minute

• C. amplitude per wavelength

• D. hertz per second