Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science 8 > Unit 9 > Flashcards

Unit 9 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

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

A

x-rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

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

A

wavelength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

______ is the number of waves per unit of time

A

frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

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

A

longitudinal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

______ _____ waves have a color spectrum known as ROYGBIV

A

visible light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

_______ waves disturb matter

A

mechanical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the _______ is the top of the wave

A

crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

the _________ is the bottom of the wave

A

trough

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

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

A

amplitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

____________ waves are produced by stars and galaxies

A

ultraviolet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

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

A

transverse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

_______ waves are often used in heat lamps

A

infrared

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

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

A

radio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

________________ waves are transverse waves that disturb electromagnetic fields

A

electromagnetic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

___________ waves have the shortest wavelength and the highest frequency

A

gamma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

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

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

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

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

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

A

no, they transfer energy through electromagnetic fields instead of particles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

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

A

300,000,000 m/s. slow down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

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

A

-blue light
-gamma rays
-ultraviolet

21
Q

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

A

-red light
-radio waves
-infrared radiation

22
Q

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

A

electromagnetic waves

23
Q

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

A

no. 300,000,000 m/s

24
Q

disturbance that can carry energy

A

waves

25
Q

pieces of matter

A

particles

26
Q

electromagnetic waves can be waves and particles called what

A

photons

27
Q

mass less bundle of energy

A

photon

28
Q

entire range of frequencies of electromagnetic radiation

A

electromagnetic radiation

29
Q

electromagnetic waves give off energy in form of what

A

electromagnetic radiation

30
Q

theres a broad range in different types of what

A

electromagnetic radiation

31
Q

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)

A
  1. radiowave
  2. microwave
  3. infrared
    visible light
  4. ultraviolet
  5. x-ray
  6. gamma ray
32
Q

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

A

radio waves

33
Q

used for cooking, doppler radar, gps

A

microwave

34
Q

used in night vision goggles, remote controls, infrared waves

A

infrared waves

35
Q

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,

A

visible light waves

36
Q

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

A

ultraviolet waves

37
Q

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

A

x rays `

38
Q

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

A

gamma rays

39
Q

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

A

reflection

40
Q

can all types of waves be reflected

A

yes

41
Q

angle of incidence is always the same as angle of reflection

A

law of reflection

42
Q

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

A

refraction

43
Q

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

A

diffraction

44
Q

why do soundwaves bend better than light waves

A

because they are longer

45
Q

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

A

absorption

46
Q

when 2+ waves combine to make a new wave

A

interference

47
Q

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

A

constructive

48
Q

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

A

destructive

49
Q

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

A

resonance

Science 8 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions