Sound

What is the definition for the word amplitude?

• The number of complete waves that pass per second

• The distance from the peak of one wave to the peak of an adjacent wave.

• The distance from the equilibrium position of a peak plus the same distance from a trough.

• The maximum distance from the equilibrium position of any point on a wave

Which 2 points on the wave are exactly one wavelength apart?

• P and S

• Q and R

• Q and S

• P and R

Water waves travel from deeper water to more shallow water. This causes them to refract.

Which property always remains the same when refraction occurs?

• Wavelength

• Frequency

• Amplitude

• Speed

What is the unit for frequency?

what is the formula for finding the wavelength of a wave?

• v = f λ

• λ / v = f

• v f = λ

• λ / f = v

Sound waves are ______ waves

light waves are ______ waves

The critical angle in the diagram is 43 degrees. What is the angle of refraction at the critical angle?

• Less than 43

• Equal to 43

• More than 43 but less than 90

• Equal to 90 degrees

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

• Refraction

• Reflection

Sound waves travel the fastest through ---

• Liquids

• Gases

• Solids