waves and sound waves

What type of energy does a sound wave have?

• Mechanical

• Radiant

• Electrical

• Sound

Sound is produced by -----

• Heat energy

• Low temperatures

• Vibrations

• Friction

True or False: Sound needs a medium.

• True

• False

True or False: Sound waves are faster than light.

• False

• True

Areas of increased pressure on a sound wave are known as a ----

• Rarefaction

• Compression

• Frequency

• Amplitude

The number of wavelengths that pass a fixed point each second is known as ----

• Hertz

• Amplitude

• Frequency

The unit for measuring frequency is the ---

• Joule

• Hertz

• Gram

• Newton

The speed of sound depends on these two things:

• The type of medium and the temperature of the medium

• Speed of the medium and temperature of the medium

• Temperature of the medium and sound of the medium

• None of the above

Sound waves travel the fastest through ---

• Liquids

• Gases

• Solids

Sonar and echolocation use ----- to detect objects under water.

• Refraction

• Reflection