Comps

Question 1

Mechanical Wave

Answer 1

A wave that can only propagate through a medium

Question 2

Example of a Mechanical Wave

Answer 2

Sound wave or water wave

Question 3

Electromagnetic Wave

Answer 3

A wave that does not require a medium

Question 4

Example of Electromagnetic Wave

Answer 4

Light (x-ray, ultraviolet, infrared, etc)

Question 5

Transverse Wave

Answer 5

Caused by vibrations perpendicular to the direction of travel

Question 6

Example of a Transverse Wave

Answer 6

Light waves, surface waves on the ocean

Question 7

Longitudinal Wave

Answer 7

Caused by vibrations parallel to the direction of travel

Question 8

Example of Longitudinal Wave

Answer 8

Sound waves, pressure waves

Question 9

Standing Wave

Answer 9

A wave that remains in a constant position

Question 10

Example Standing Wave

Answer 10

Sound waves in a flute or on a guitar string

Question 11

Wave Speed

Answer 11

Speed of the crest or rarefaction of a wave

Question 12

Equation of Wave Speed

Answer 12

Speed= Wavelength

            Period

speed=wavelength x frequency

Question 13

Unit for wave speed

Answer 13

Meters “per” second (m/s)

Question 14

Amplitude (A)

Answer 14

Distance from the centerline to the crest

Question 15

Wavelength (λ)

Answer 15

Distance between identical points of a wave (like crests)

Question 16

Period (T)

Answer 16

Time between crests –how long does it take for one cycle

Question 17

Equation for Period (T)

Answer 17

T = total time

  # of cycles

T=1/f

Question 18

Perio of Unit

Answer 18

s=1/Hz

Question 19

Frequency (f)

Answer 19

How frequent? How many cycles (or crests) in a second

Question 20

Equation of Frequency (f)

Answer 20

f = # of cycles

 total time

f = 1/T

Question 21

Unit of Frequency (f)

Answer 21

Hz = 1/s

Question 22

Ultrasonic

Answer 22

Higher frequency than humans can hear

Question 23

Example of Ultrasonic

Answer 23

a dog whistle (>20,000 Hz)

Question 24

Infrasonic

Answer 24

Lower frequency than humans can hear

Question 25

Example of Infrasonic

Answer 25

A whale call (\<20 Hz)

Question 26

Natural Frequency

Answer 26

The frequency at which a material naturally tends to vibrate

Question 27

Example of a Natural Frequency

Answer 27

The frequency of sound from a bell

Question 28

Heat

Answer 28

The transfer of thermal energy

Question 29

Example of Heat

Answer 29

Thermal energy always flows form hot to cold

Question 30

Temperature

Answer 30

A measure of the average kinetic energy of atoms in a substance

Question 31

Example of Termperature

Answer 31

A cup of boiling water has the same temperature as a gallon does

Question 32

Unit of Temperature

Answer 32

K or °C

Question 33

Specific Heat Capacity

Answer 33

How fast a substance heats up or cools off

Question 34

Example of Specific Heat Capacity

Answer 34

Water has higher specific heat capacity than sand