physics

The letter used to represent the speed of light is

"C"

The speed of light is__________ meters per second.

3*10^8

A united used to measure the loudness of a sound is the

Decibel

Performers of ten impersonate the voice of famous personalities. However even the best performers voice can be ditinguished from the famous because each voice consists of characteristic

Harmonics

The mazimum distance a mechanical oscillator moves from its equilibrium position is called its

amplitude

A unit of motion that repeats over and over again is

cycle

The gradual loss of amplitude by an oscillating system due to friction is know as

damping

A lens that is thicker on the edges and thinner in the middle will cause light rays to

diverge

Harmonic motion is the result of a restoring force bringing an oscillator to the__________ position

equilibrium center

The energy of waves is proportional to the_______ of a wave

frequency

Another name for the natural frequency of a vibrating string is the

fundamental

The unit representing one cycle per second is called

hertz

Increasing the length of a pendulum causes its period to

increase

As the frequency of a vibration string increases, the wavelenght

increases

The amount of light energy falling on a surface per second is a measure of the light

intensity

A sound wave is an example of a

longitudinal wave

An optical instrument that forms images by reflecting light is called a

mirror

An imaginary line drawn perpendicular to the surface of an optical device where a light ray strikes the surface is called the

normal line

The function of a wave is to carry _____ from one place to another

oscillations

Stringed instruments, systems involving Earth, and pendulums all act as

oscillators

The frequency of an oscillator is inversely related to its

period

The time required for a pendulum to make one swing over and back is called

period

the frequency of a fire siren sounds high while the frequency of a bass drum sound low. A term commonly used to describe how we hear these frequency differences is

pitch

The electromagnetic spectrum includes visible light, ultraviolet light, and _____ waves

radio

We see most objects around us because they

reflect light

As light bounces off a surface, it is decribed as being

reflected

light reflected from a highly polished surface represents

specular reflection

The product of the frequency and the length of a wave yields its

speed/velocity

Some jet planes fly fasten than the speed of sound. The term used to describe their motion is

supersonic

A wave whose oscillations are perpendicular to the direction in which the wave travels is called

transverse wave

In one complete cycle, a wave moves forward one

wavelength

The distance from one point on a wave to the same point on the next wave is called the

wavelength