Unit 9

Question 1

_______ waves are used to penetrate solids and are used in doctors offices

Answer 1

x-rays

Question 2

_____________ is the distance between one point of a wave to the same point in the next wave

Answer 2

wavelength

Question 3

______ is the number of waves per unit of time

Answer 3

frequency

Question 4

________ waves occur when motion of medium is parallel to waves direction

Answer 4

longitudinal

Question 5

______ _____ waves have a color spectrum known as ROYGBIV

Answer 5

visible light

Question 6

_______ waves disturb matter

Answer 6

mechanical

Question 7

the _______ is the top of the wave

Answer 7

crest

Question 8

the _________ is the bottom of the wave

Answer 8

trough

Question 9

___________ is the maximum distance that matter is displaced from the resting position

Answer 9

amplitude

Question 10

____________ waves are produced by stars and galaxies

Answer 10

ultraviolet

Question 11

_________ waves occur when motion of medium is at right angles(perpendicular) to direction of wave

Answer 11

transverse

Question 12

_______ waves are often used in heat lamps

Answer 12

infrared

Question 13

_______ waves are utilized by insects to locate nectar and use to locate airplanes

Answer 13

radio

Question 14

________________ waves are transverse waves that disturb electromagnetic fields

Answer 14

electromagnetic

Question 15

___________ waves have the shortest wavelength and the highest frequency

Answer 15

gamma

Question 16

A. used in remote controls for tv
B. goes through most matter except bone and lead
C. highest frequency and energy
D. can cause skin cancer or promote vitamin D production
E. longest wavelength
F. used to transmit cell phone calls
G. wavelengths can be seen by the human eye
radio, microwave, infrared, visible, ultraviolet, x-ray, gamma

Answer 16

a-infrared
b-radio
c-gamma
d-ultraviolet
e-x-ray
f-microwave
g-visible

Question 17

H- used to find broken or illegal plane carry on
I-used to kill bacteria on food
J- ROYGBIV
K-shortest wavelength
L- most dangerous waves due to amount of exposure humans get
M-used for RADAR tracking and wi-fi signals
N- radiant heat rays
radio, microwave, infrared, visible, ultraviolet, x-ray, gamma

Answer 17

h-x ray
i-microwave
j-visible
k-gamma
l-ultraviolet
m-radio
n-infrared

Question 18

do electromagnetic waves need a medium to travel through like mechanical waves do? explain why or why not

Answer 18

no, they transfer energy through electromagnetic fields instead of particles

Question 19

what is speed light of vacuum. what would happen to speed if it enters a different medium

Answer 19

300,000,000 m/s. slow down

Question 20

which one has form of electromagnetic radiation with greater frequency
-yellow light or blue light
-x rays or gamma rays
-ultraviolet rays or violet light

Answer 20

-blue light
-gamma rays
-ultraviolet

Question 21

which one has form of electromagnetic radiation with longer wavelength
-red light or blue light
-microwaves or radio waves
-infrared radiation

Answer 21

-red light
-radio waves
-infrared radiation

Question 22

electric and magnetic waves released by a vibrating electric charge, capable of transferring energy through a vacuum

Answer 22

electromagnetic waves

Question 23

do electromagnetic waves need a medium to travel through? all electromagnetic waves travel at a speed of what in a vacuum.

Answer 23

no. 300,000,000 m/s

Question 24

disturbance that can carry energy

Answer 24

waves

Question 25

pieces of matter

Answer 25

particles

Question 26

electromagnetic waves can be waves and particles called what

Answer 26

photons

Question 27

mass less bundle of energy

Answer 27

photon

Question 28

entire range of frequencies of electromagnetic radiation

Answer 28

electromagnetic radiation

Question 29

electromagnetic waves give off energy in form of what

Answer 29

electromagnetic radiation

Question 30

theres a broad range in different types of what

Answer 30

electromagnetic radiation

Question 31

name parts of each thing 1. -longer wavelength 2. -lower frequency 3. -lower energy 4. -shorter wavelength 5. -higher frequency 6. -higher energy (Rylee makes interesting very underrated xylophones greatly)

Answer 31

1. radiowave 2. microwave 3. infrared visible light 4. ultraviolet 5. x-ray 6. gamma ray

Question 32

emitted by radio stations, mri's, radar, wi-fi, tv, cell phones, longest wavelength, lowest frequency

Answer 32

radio waves

Question 33

used for cooking, doppler radar, gps

Answer 33

microwave

Question 34

used in night vision goggles, remote controls, infrared waves

Answer 34

infrared waves

Question 35

only electromagnetic wave we can see, given off by sun and light bulbs, different colors of light have different wavelengths, ROYGBIV, red is longest, violet is shortest,

Answer 35

visible light waves

Question 36

given off by sun, used in light bulbs, to kill bacteria, and by human body to make vitamin D

Answer 36

ultraviolet waves

Question 37

used to take pics of bones to check for brakes or fractures, used in CAT scans, small enough to penetrate skin cells, overexposure can cause cancer

Answer 37

x rays `

Question 38

used to kill cancer cells, sterilize medical equipment, and in radioactive tracers, smallest wavelength with highest frequencies

Answer 38

gamma rays

Question 39

when a wave strikes an object and bounces off it, this also happens to echo waves

Answer 39

reflection

Question 40

can all types of waves be reflected

Answer 40

yes

Question 41

angle of incidence is always the same as angle of reflection

Answer 41

law of reflection

Question 42

bending of waves caused by change in its speed as it moves from one medium to another, greater change in speed as it moves

Answer 42

refraction

Question 43

when object causes wave to change direction and bend around it. depends on size of object wave hits and wavelength of waves

Answer 43

diffraction

Question 44

why do soundwaves bend better than light waves

Answer 44

because they are longer

Question 45

when wave strikes an object and goes into it or absorbed. energy from wave gets converted to thermal energy

Answer 45

absorption

Question 46

when 2+ waves combine to make a new wave

Answer 46

interference

Question 47

when two waves add together. like parts of wave must line up, results in an increase in amplitude of wave

Answer 47

constructive

Question 48

when 2 or more subtract from one another overlap. opposite parts of waves must line up

Answer 48

destructive

Question 49

process where an object is made to vibrate at its natural frequency by absorbing energy of another that is vibrating at same frequency

Answer 49

resonance