Ps 100 Test 2

Front 1

Mechanical waves

Back 1

A traveling disturbance in material that transports energy

Front 2

Equilibrium Position

Back 2

The place where a molecule will reside when no unbalanced forces are acting upon it

Front 3

Compression Wave (Longitudinal Wave)

Back 3

A wave on which the molecules of the medium vibrate in the same direction as the wav propagates

Front 4

Shear Wave (Transverse Wave)

Back 4

A wave in which the molecules of the medium vibrates at right angles to the direction the wave propagates.

Front 5

Surface Wave

Back 5

A wave that travels along the surface of a medium.

Front 6

Crest

Back 6

The part of the wave where the particles are displaced a maximum amount above or in front of their equilibrium position

Front 7

Trough

Back 7

The part of the wave where the particles are displaced a maximum amount below or behind their equilibrium position.

Front 8

Amplitude

Back 8

The maximum amount that a particle will displace from its undisturbed, normal position when a wave passes through it.

Front 9

Wave Speed

Back 9

The rate at which a specific wave disturbance travels from point to point

Front 10

Wavelength

Back 10

The distance between successive similar parts in a repeating wave

Front 11

Frequency

Back 11

The number of wave amplitude crests that pass a particular point in space every second

Front 12

Reflection

Back 12

The act of bouncing off a surface

Front 13

Refraction

Back 13

The act of changing direction when passing from one medium to another

Front 14

Diffraction

Back 14

The changing of direction of waves to bend around corners and spread as they encounter obstacles.

Front 15

Interference

Back 15

The canceling and enhancing effect that occurs when two waves move through the sane space at the same time

Front 16

Constructive INterference

Back 16

When two or more waves passing through the same space at the same time both disturb the medium in the same way so that the resultant amplitude is larger than the amplitude of each individual wave separately.

Front 17

Destructive Interference

Back 17

When two or more waves passing through the same space at the same time both disturb the medium in opposite ways so that the resultant amplitude is smaller than the amplitude of each individual wave separately.

Front 18

Standing Wave

Back 18

A wave characterized by the lack of vibration at certain points, between which areas of maximum vibration occur.

Front 19

Node

Back 19

A location of no vibration in a standing wave

Front 20

Antinode

Back 20

A location of maximum vibration in a standing wave.

Front 21

Doppler Effect

Back 21

A change in the observed frequency of a wave occurring when the source and observer are in motion relative to each other.

Front 22

Maxwell's Equations

Back 22

A set of four fundamental laws, expressed in mathematical form, that govern electricity and magnetism and their interrelationship. The electrical force law is included.

Front 23

Electromagnetic radiation

Back 23

Radiation originating in a varying electromagnetic field, such as visible light, radio waves, x-rays, and gamma rays.

Front 24

Photoelectric effect

Back 24

the ejection of electrons from metals when light is shined on the metal's surface

Front 25

Photon

Back 25

A particle of light. It possesses energy, frequency, and wavelength but neither mass nor charge

Front 26

Planck's constant

Back 26

A value when multiplied by the frequency of light, gives the energy of the photon of light at that frequency.

Front 27

Wave-Particle Duality

Back 27

The state of possessing both wave and particle properties

Front 28

Solid

Back 28

A physical state of matter that is characterized by rigidity and resistance to changes in size and shape

Front 29

Liquid

Back 29

A physical state of matter that readily changes shape to match its container but that resists changes in volume

Front 30

Gas

Back 30

A physical state of matter that readily changes both shape and volume to match its container

Front 31

Plasma

Back 31

A physical state of matter characterized by fluid properties in which positive and negative charges move independently.

Front 32

Supercritical Fluid

Back 32

Materials dissolve more easily in a liquid that in a gas.

Front 33

Compression force

Back 33

a force that is applied in such a way as to compress a material.

Front 34

Tension force

Back 34

A force that is applied in such a way as to stretch a material.

Front 35

Shear force

Back 35

a force that is applied in such a way as to twist or deform a material.

Front 36

Electromagnetic Spectrum

Back 36

The entire range of radiation including , in order of decreasing frequency: cosmic-ray photons, gamma rays, x-rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves.

Front 37

Electromagnetic Spectrum

Back 37

The entire range of radiation including , in order of decreasing frequency: cosmic-ray photons, gamma rays, x-rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves.

Front 38

Electromagnetic Spectrum

Back 38

The entire range of radiation including , in order of decreasing frequency: cosmic-ray photons, gamma rays, x-rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves.

Front 39

Electromagnetic Spectrum

Back 39

The entire range of radiation including , in order of decreasing frequency: cosmic-ray photons, gamma rays, x-rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves.

Front 40

Continuous spectrum

Back 40

A spectrum in which the colors blend gradually together without noticeably abrupt changes or missing colors.

Front 41

Continuous spectrum

Back 41

A spectrum in which the colors blend gradually together without noticeably abrupt changes or missing colors.