SOUND

The speed of sound in air increases by __________ with every increase of 1C.

Sound exhibits the following properties: REFLECTION and __________.

The turning back of the wave as it hits the barrier is called __________.

The reflected sound is known as __________.

Sound waves travel __________ in cooler air than in warmer air.

WHICH ITEM WILL SOUND TRAVEL FAST THROUGH?

• WATER

• FAOM BOARD

• STEM

• WOODEN BLOCK

Which of the following is true about the effect of air temperature on the speed of sound?

• The lower the temperature the faster the speed.

• The higher the temperature the faster the speed.

• The higher the temperature the slower the speed.

• The temperature does not affect the speed of sound.

When the direction of a wave changes as it passes from one medium to another, it is called ___________.

• density

• echo

• reflection

• refraction

IN WHICH TEMPERATURE THE SOUND TRAVEL FASTEST?

• 10*C

• 30*C

• 20*C

• 40*C

The speed of sound in dry air at 0*C is around __________.