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

• stop

• vibrate

• listen

• close

Sound travels FASTEST through which of these materials?

• solid (table)

• liquid (water)

• gas (air)

• vacuum (outer space)

Why does cupping your hands around your mouth when you shout make the sound travel further?

• The sound spreads out.

• Your voice gets louder.

• You are screaming.

• The sound energy is directed in one direction.

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

What is pitch?

• the back and forth movement of matter
• how loud a sound is
• how high or low a sound is
• the number of vibrations per second

Without matter, sound waves could not travel.

• True

• False

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 made up of _________ that move through matter. 

• vibrations
• sounds
• energy
• volume