Waves 1 Exam

Periodic or Harmonic Motion is motion that ___________ [ complete the sentence ].

• is in a straight line and in one direction.

• is in a straight line but in two directions.

• repeats itself in a cyclical manner.

• moves at constant velocity.

Which of the following objects can not be considered an oscillator?

• A rubber band stretched-out in someone's hand.

• A book dropped off a table, falling to the floor.

• A spring with an attached mass dangling from the ceiling.

• A tire-swing moving back and forth.

The restoring force is always striving to make the oscillating object or system _______________ . [ complete the sentence ]

• stay away from the equilibrium position

• move faster

• move slower

• go back to the equilibrium position

The amplitude of an oscillator is

• the maximum displacement from the equilibrium position.

• how much time it takes to complete one cycle.

• the displacement from the equilibrium position at any point or time in the cycle.

• the number of cycles moved per second.

What is the period of an oscillator?

• A type of punctuation at the end of a sentence.

• The amount of time it takes an oscillator to complete a cycle.

• The number of cycles an oscillator completes in 1 second.

• The amount of time it takes for an oscillator to stop moving.

What is the frequency of an oscillator?

• The amount of time it takes for an oscillator to complete 1 cycle.

• The amount of time it takes for an oscillator to stop oscillating.

• The number of cycles an oscillator moves per second.

• The number you tune your radio to to listen to a certain station.

The common unit for frequency is the

• second ( s ).

• Hertz ( Hz ).

• meter ( m ).

• Newton ( N ).

The period of an oscillator is 2 seconds. What is its frequency?

• 2 Hz

• 0.5 Hz

• 1 Hz

• 0.2 Hz

According to the graph, what is the amplitude of this oscillation?

• 1 m

• 2 m

• 1 s

• 2.2 s

According to the graph, what is the period for this oscillator?

• 1 s

• 2.1 s

• 0.5 s

• 5 s