Waves

Question 1

Waves

Answer 1

Rhythmic vibrations

Question 2

Mechanical Waves

Answer 2

Waves that must move through some physical medium such as air or water

Question 3

Electromagnetic Waves

Answer 3

Waves that can move through a vacuum

Question 4

Peak or Crest

Answer 4

Highest point of a wave

Question 5

Trough

Answer 5

Lowest point of a wave

Question 6

Wavelength

Answer 6

Distance between two peaks

Question 7

Amplitude

Answer 7

Difference between height of the peak and height of the center of the wave

Question 8

Cycle

Answer 8

One complete wave

Question 9

Frequency

Answer 9

Number of peaks that pass a point in one second

Question 10

Velocity

Answer 10

Speed at which the wave travels

Question 11

Transverse Waves

Answer 11

Waves travel at 90 degrees to the direction the vibration occurs

Question 12

Longitudinal Wave

Answer 12

Vibrations that occur in the same direction that the wave moves

Question 13

Sound Waves

Answer 13

Energy that travels in waves through matter such as air, water, or wood and can be detected by the human ear

Question 14

Ultrasound

Answer 14

Mechanical waves above 20,000 HZ

Question 15

Radio Waves

Answer 15

Electromagnetic waves with frequencies between 100 KHz and 100 MHz

Question 16

Microwaves

Answer 16

Electromagnetic waves with frequencies between 109 and 1011 Hz

Question 17

Infrared waves

Answer 17

Electromagnetic waves with frequencies between microwaves and visible light

Question 18

Visible spectrum

Answer 18

Electromagnetic waves that are visible to the human eye

Question 19

Ultraviolet Waves

Answer 19

Electromagnetic waves with frequencies just above the visible spectrum

Question 20

X - Rays

Answer 20

Electromagnetic waves with frequencies between 1016 and 1019 Hz

Question 21

Gamma Rays

Answer 21

Electromagnetic waves with frequencies above 1019 Hz

Question 22

Analog Signal

Answer 22

Information is transmitted as waves

Question 23

Digital Signal

Answer 23

Information is trasmitted as a series of pulses
( 1s and 0s)

Binary Code

Question 24

Pitch

Answer 24

Tone of sound due to the frequency of the sound wave

Question 25

Loudness

Answer 25

Volume due to the energy/amplitude of sound waves

Question 26

Overtone or Harmonics

Answer 26

Vibrations that are multiples of the fundimental frequency

Question 27

Acoustics

Answer 27

A building’s effect on sound

Question 28

Reverberation

Answer 28

Multiple echos

Question 29

Resonance

Answer 29

Transferring of sound energy from one source to another

Question 30

Doppler Effect

Answer 30

Pitch changes as an object moves towards or away from you

Question 31

SONAR

Answer 31

Use of sound waves to measure distance to an object

Question 32

Interference

Answer 32

When two waves meet and affect each other

Question 33

Constuctive Interference

Answer 33

When two waves combine to increase the amplitude of the waves

Question 34

Destructive Interference

Answer 34

When two waves cancel each other out

Question 35

String Instrument

Answer 35

Produces sound by vibrating strings

Question 36

Percussion Instrument

Answer 36

Produces sound when struck by an object

Question 37

Wind Instrument

Answer 37

Produces sound when air is moved through them

Question 38

Electronic Instrument

Answer 38

Produces sound when electronic signals pass through a speaker