sound wave

Sound is caused by....

• molecules
• vibrations
• people
• space

Sound does not travel in space because

• Space is too far away.
• There is no matter in space.
• Space is the final frontier
• Space has planets.

What medium does sound travel through slowest?

• gas
• solid
• liquid
• trees

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 medium (solid, liquid, gas) does sound travel fastest through?

• solid
• liquid
• gas

Sound is a form of? 

• energy
• pitch
• volume

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is because of a change in the sound wave's

• concussion. 
• amplitude. 
• reflection.
• frequency. 

If the distance represented by the letter A were increased, how would it change the way the sound was heard?

• The sound would be higher. 
• The sound would be lower. 
• The sound would be softer. 
• The sound would be louder. 

What does pitch depend on?

• amplitude 
• frequency
• intensity 
• volume of sound