science f2 chapter 10

Sound is produced by -----

• Heat energy

• Low temperatures

• Vibrations

• Friction

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Sound needs a medium.

• True

• False

Sound waves are faster than light.

• False

• True

The unit for measuring frequency is the ---

• Joule

• Hertz

• Desibel

• Newton

The measure of the amount of energy in a wave is ----

• Wavelength

• Hertz

• Frequency

• Amplitude

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Sound waves travel the fastest through ---

• Liquids

• Gases

• Solids

• Vacuum

Sound waves that are beyond the range of human ear are known as ----

• Infrasonic waves

• Ultrasonic waves

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

• Refraction

• Reflection

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Material (matter) through which a wave travels

• medium
• Doppler Effect
• sound
• pitch

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How high or low a sound is; depends on the frequency

• pitch

• frequency

• sound

• medium