Sound is caused by?

• force

• vibrations

• instruments

• movement of wave

What is the name of the waves in which sound travels?

• pulling waves

• complementary waves

• transverse waves

• longitudinal wave

The term used to describe the number of complete waves that pass a point in a certain period of time:

• amplitude

• trough

• frequency

• energy

How high or low a sound is perceived to be is called:

• pitch

• tone

• intensity

• hertz

In which states that sound travel faster?

• gas

• solid

• plasma

• liquid

The pitch is affected by....

• amplitude

• wave speed

• wave motion

• frequency

Loud sound means....

• the frequency is higher

• the amplitude is higher

• the amplitude is lower

• the frequency is lower

Pay attention to the picture.

Which wave has lower pitch?

• Blue wave

• Red wave

Which frequency range can be heard by a bat?

• more than 20 Hz

• between 20 - 20,000 Hz

• more than 20,000 Hz

• lower than 20,000 Hz

Can sound travel in space?

• Yes

• No