waves

Question 1

a disturbance that travels through a medium.

Answer 1

wave

Question 2

a substance that can transmit energy.

Answer 2

medium

Question 3

matter in the medium moves back and forth along right angles to the direction that the wave travels.

Answer 3

transverse wave

Question 4

matter in the medium moves back and forth along the same direction that the wave travels.

Answer 4

compressional wave

Question 5

a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.

Answer 5

sound waves

Question 6

a combination of longitudinal and transverse waves and are surface waves.

Answer 6

water waves

Question 7

an elastic wave in the earth produced by an earthquake or other means.

Answer 7

seismic waves

Question 8

high point of a wave.

Answer 8

crests

Question 9

low point of a wave.

Answer 9

troughs

Question 10

the reduction of an items density, the opposite of compression.

Answer 10

rarefaction

Question 11

the distance between successive crests of a wave especially points in a sound wave or electromagnetic wave.

Answer 11

wavelength

Question 12

the rate at which a vibration occurs that constitutes a wave.

Answer 12

frequency

Question 13

the greater the amplitude the more energy the wave has.

Answer 13

amplitude

Question 14

the fact or phenomenon of light radio waves ECT. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

Answer 14

refraction

Question 15

the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge.

Answer 15

diffraction

Question 16

the combination of 2 or more electromagnetic wave forms to form a resultant wave in which the displacement is either reinforced or canceled.

Answer 16

interference

Question 17

a vibration of a system in which some particular points remain fixed while others between them vibrate with the maximum amplitude.

Answer 17

standing wave

Question 18

the reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of neighboring object.

Answer 18

resonance

Question 19

the membrane of the middle ear, which vibrates in response to sound waves; the tympanic membrane.

Answer 19

eardrum

Question 20

the spiral cavity of the inner ear containing the organ of corti, which produces nerve impulses in response to sound vibrations.

Answer 20

cochlea

Question 21

the measurable amount of a property such as force brightness or a magnetic field.

Answer 21

intensity

Question 22

the amount of noise something or someone makes.

Answer 22

loudness

Question 23

a unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale.

Answer 23

decibel

Question 24

the quality of a sound governed by the rate of vibrations producing it;the degree of highness or lowness of tone.

Answer 24

pitch

Question 25

of or involving sound waves with a frequency above the upper limit of human hearing.

Answer 25

ultrasonic

Question 26

the increase or decrease in the frequency of sound, light, or other waves as the source and observer move toward or away from each other.

Answer 26

Doppler effect

Question 27

a musical tone which is a part of the harmonic series above a fundamental note, and may be heard with it.

Answer 27

overtone

Question 28

the properties or qualities of a room or building that determine how sound is transmitted in it.

Answer 28

acoustics

Question 29

the location of objects by reflected sound, in particular that used by animals such as dolphins and bats.

Answer 29

echolocation

Question 30

a system for the detection of objects under water and for measuring the water’s depth by emitting sound pulses and detecting or measuring their return after being reflected.

Answer 30

sonar