Review 3QA SCI1-2

How does light travel?

• in a zigzag line

• in a spiral line

• in a curvy line

• in a straight line

Sound is produced when a force causes an object or substance to ___?

• stop

• vibrate

• listen

• close

What is volume?

• how high or low a sound is
• the loudness or softness of a sound
• the number of vibrations per second
• vibrations

What is vibration?

• how loud a sound is
• the back and forth movement of matter
• how high or low a sound is
• the loudness or softness of a sound

Sound travels in the form of _____.

• waves
• loops
• straight lines
• diangles 

How can you make a sound louder?

• move away from the sound

• use more energy to create more sound

• use less energy to make the sound

• use a smaller objects to create the sound

Sound is a form of?

• energy

• work

• force

• instrument

Because there is no matter in space, sound waves cannot travel.

• True
• False

True or false?

Heat is a source of energy.

• false

• true

A mirror _________________ light.

• absorbs

• reflects

• refracts