Test Review

The ____ is a force that always acts to pull an oscillator back toward the center position. Restoring force

When the frequency of a periodic force matches the natural frequency of the oscillating system, ____ occurs. resonance

The number of cycles an oscillator makes per second is called the ____ The number of cycles an oscillator makes per second is called the ____. frequency

The ____ of an oscillator describes where it is in the cycle. phase

Friction causes ____ in an oscillator. damping

Swinging motion (back and forth motion that repeats) is an example of a ____. Harmonic motion

____ describes the size of a cycle. Amplitude

The time it takes for one cycle is called the ____. period

The low point of a wave is called its: trough

The lowest natural frequency of an object is known as the ____ frequency. fundamental

Multiples of the natural frequency are called ____. harmonics

When waves bounce off an obstacle and change direction, it is known as ____. reflection

A wave bending around obstacles and going through openings is called ____. diffraction

Using a heavy curtain in a theater to keep the audience from hearing backstage sound is an example of the ____ of sound waves. absorption

Two waves meeting and cancelling each other out is called ____ Two waves meeting and cancelling each other out is called ____. Destructive interference

Two waves meeting and adding up to a larger wave is called ____ Two waves meeting and adding up to a larger wave is called ____. Constructive interference

A speaker vibrates at a frequency of 200 Hz. What is its period A speaker vibrates at a frequency of 200 Hz. What is its period? 0.005 seconds

A pendulum has a period of 0.3 second. What is its frequency? 3.33 Hz

An oscillator makes 360 vibrations in 3 minutes. What is its period An oscillator makes 360 vibrations in 3 minutes. What is its period? 0.5 seconds

A wave has a speed of 50 m/sec and a frequency of 10 Hz A wave has a speed of 50 m/sec and a frequency of 10 Hz. Calculate its wavelength. 5 meters

A wave has a period of 2 seconds and a wavelength of 4 meters A wave has a period of 2 seconds and a wavelength of 4 meters. Calculate its frequency. 0.5 Hz

An oscillator makes 360 vibrations in 3 minutes. What is its frequency An oscillator makes 360 vibrations in 3 minutes. What is its frequency? 2 Hz