Waves Chapter 14

What is a damped harmonic motion?

A vibration that fades out as energy is transferred from one object to another

What happens when a wave passes through a series of vibrating objects?

If the first mass were not connected to the other masses, it would keep vibrating up and down on its own. However, because it transfers its energy to the second mass, it slows down and then returns to its resting position.

How does the wave speed react in a wave?

In a given medium, though, the speed of waves is constant; it does not depend on the frequency of the wave.

What type of wave does not require a medium?

Light wave

How do waves travel?

Most waves travel through a medium.

What is visible light?

Our eyes can detect light with frequencies ranging from about 4.3 1014 Hz to 7.5 1014 Hz.

What determines how the how well waves travel through a medium?

The arrangement of particles in a medium

What is the highest point of a transverse wave?

The crest .

What is electromagnetic spectrum?

The full range of light at different frequencies and wavelengths

What is the amplitude?

The maximum distance that the particles of a wave's medium vibrate from their rest position.

What is the lowest point of a transverse wave?

The trough

What are mechanical waves?

Waves that require a medium

What happens whenever a spring is expanded or compressed?

Whenever a spring is expanded or compressed, it is exerting a force that pushes the mass back almost to the original resting position. As a result, the mass will continue to bounce up and down.

Are Waves are related to vibrations?

Yes

Does light have a definite speed?

Yes. .All electromagnetic waves in empty space travel at the same speed, the speed of light, which is 3.00 108 m/s (186 000 mi/s).

Are the frequency and period of a wave related?

Yes. the inverse of the period.

Harmonic vibration?

a force that pushes the mass back almost to the original resting position and the mass continues to bounce up and down.

What is a wave?

a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium.

What causes waves?

a vibrating object.

What are electromagnetic waves made up of?

a wave that consists of oscillating electric and magnetic fields, which radiate outward at the speed of light.

What is the Doppler effect?

an observed change in the frequency of a wave when the source or observer is moving.

How is pitch determined?

by the frequency of sound waves.

What causes Electromagnetic waves?

by vibrating charged particles.

What causes a high pitched sound?

caused by sound waves of higher frequency.

What are the crowded areas of a longitude wave called?

compressions.

What are light waves made up of?

consist of changing electric and magnetic fields in space.

What do the high and low points of a sine curve indicate?

correspond to compressions and rarefactions in the spring

What does wave speed depend on?

depends on the medium.

What type of waves are light waves made up of?

electromagnetic waves.

How do you calculate wave speed?

equals frequency times wavelength.

What is the Kinetic theory?

explains differences in wave speed.

What type of light frequencies can we detect?

frequencies ranging from about 4.3 1014 Hz to 7.5 1014 Hz.

How can you identify a longitude wave?

has compressions and rarefactions.

How is the loudness of the pitch of sound determined?

is determined by the frequency at which sound waves strike the eardrum in your ear.

As a wave travels, what is the effect n energy?

may spread out as a wave travels.

What is Amplitude?

measures the amount of particle vibration

What does wave length indicate?

measures the distance between two equivalent parts of a wave. the distance from any point on a wave to an identical point on the next wave.

What is the mater called that waves travel through?

medium.

Why do waves travel very quickly through solid?

molecules are not only closer together but also tightly bound to each other. Waves travel very quickly through most solids.

What are the stretched areas of a longitude wave called?

rarefactions.

Waves that have the shape of a sine curve are called what?

sine waves.

What is the amplitude of a longitude wave?

the maximum deviation from the normal density or pressure of the medium.

Why don't waves travel quickly through gas?

the molecules are far apart and move around randomly.

Why do waves travel slower through a liquid?

the molecules are much closer together. But they are also free to slide past one another.

What happens to the particles in a medium?

the particles in the medium also vibrate as the wave passes through the medium.

What does a transverse wave look like?

the shape of a sine curve.

What happens when sound waves travel in air?

the waves spread out in spheres. As they travel outward, the spherical wave fronts get bigger, so the energy in the waves spreads out over a larger area.

How do waves carry energy?

through matter or space.

What is the function of waves or what is their purpose?

transfer energy.

What is the effect of vibration?

transformations of energy.

When does light travel slower?

when it has to pass through a medium such as air or water.

What causes the frequency of a sound wave to change?

when the source of waves is moving.