Pendulum and Waves Review

The speed of a transverse wave in a string is 10 meters per second. If the frequency of the source producing this wave is 2.0 hertz, what is the wavelength of the wave, to the nearest tenth of a meter?

• 10
• 5
• 4
• 8

What is this called?

• refraction
• reflection
• reconstroction
• retraction

A police car traveling at a speed of 30.0 meters per second with its sirens on blast. As the police car approaches a stationary pedestrian, the pedestrian notices that the frequency is getting higher. What phenomena of waves is causing this?

• refraction
• interference 
• reflection
• Doppler effect

__________ is the bending of a wave as it moves around an object or passed through a narrow opening.

• Diffraction
• Reflection
• Refraction
• Constructive Interference

______________ occurs when two or more waves combine to produce a wave with a smaller amplitude/energy.

• Destructive interference
• Constructive Interference
• Diffraction
• Refraction

What property of the wave is represented by the letter "B"?

• amplitude
• crest
• trough
• wavelength

When the frequency of a wave increases, what happens to the wavelength?

• The wavelength is not directly affected by the frequency of a wave.
• The wavelength increases.
• The wavelength decreases.
• More specific information is needed to form a conclusion about the wavelength.

When two objects vibrate at the same frequency it is called.....

• Diffraction
• Reflection
• Refraction
• Resonance

Which of the following correctly compares the two waves?

• Wave X has half the amplitude of wave Y.
• Wave X has twice the amplitude of wave Y.
• Wave X has a lower frequency and longer wavelength than wave Y.
• Wave X has a higher frequency and shorter wavelength than wave Y.

The human ear is most sensitive to sound that has a frequency of about 4000 Hz. Assume that the speed of sound in air is 340 m/s.  What is the wavelength of a sound heard in the air with this frequency?

• 0.043 m
• 0.085 m
• 3660 m
• 340 m