Science

Sound is a type of mechanical energy that is transmitted in the form of —

• Waves
• Light
• Heat
• electron

A high soprano singer can break a crystal glass if the glass resonates with her voice. In order to do this, the sound the singer makes has to be —

• speeded up before reaching the glass
• amplified before reaching the glass
• reflected off the glass
• able to vibrate the glass 

Which of these makes a sound with the slowest vibration?

• A
• B
• C
• D

A student plans to investigate how sound changes when 4 bottles with different amounts of liquid are struck with a mallet. In which order must the bottles be placed so that the sound changes from a low pitch to a high pitch?

• A,B,D,C
• B,A,D,C 
• B,C,A,D
• C,D,B,A

Which of these transmits sound the fastest?

• Water in a pool
• A metal rod
• Air in a balloon
• Empty space

Which material will sound travel through the fastest?

• Water
• Air
• Steel 
• Cloth

How is the use of sound waves helpful to this whale?

• It helps the whale locate food.
• It makes the water warmer.
• It makes it easier to obtain oxygen.
• It signals fish to move out of the whale’s path.

Which of these transmits sound the fastest?

• Water in a pool
• A metal rod
• Air in a balloon
• Empty space

Sound waves travel best through —

• gases
• gases
• solids
• vacuums

Blowing through a straw will produce a sound. Which straw will make the highest pitch?

• Choice A
• Choice B
• Choice C
• Choice D