Brainscape's Knowledge GenomeTM

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


See full index

Physics > Waves And The Electromagnetic Spectrum > Flashcards

Waves And The Electromagnetic Spectrum Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

What is frequency?

A

How many waves per second (Hz)

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

What is period?

Include equation

A

The number of seconds for one full wave cycle (s)

Period = 1/frequency

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

What is the wavelength?

A

The length of a full cycle of a wave (m)

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

What is a transverse wave?

Give 2 examples

A

Oscillations/vibrations are perpendicular to the wave direction

EM waves
Seismic waves

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

What is a longitudinal wave?

Give an example

A

Oscillations/vibrations are parallel to the wave direction

Sound waves

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

What are the 2 equations got wave speed?

A

Wave speed = frequency X wavelength

Wave speed = distance/time

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

What are the 3 things that can happen when a wave hits a boundary?

A
  1. Absorbed
  2. Transmitted
  3. Reflected
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What happens when a wave is refracted?

A

The wave changes direction

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

When does refraction happen?

A

When the wave changes from 1 medium to another

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

What does TAGAGA stand for? (Refraction)

A 
Towards
Air
Glass
Away
Glass
Air
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the 7 EM waves?

A 
Radio waves
Microwaves
Infrared
Visible light
Ultraviolet
X-rays
Gamma
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which is the EM wave with the lowest frequency?

A

Radio waves

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

Which is the EM wave with the shortest wavelength?

A

Gamma

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

What are radiowaves used for?

A

Tv and radio

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

What are microwaves used for?

A

Heating and communications

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

What is infrared used for?

A

Cooking and heating

17
Q

What is visible light used for?

A

Photography

18
Q

What is ultraviolet used for?

A

Sercurity pens

19
Q

What are x-rays used for?

A

Medical and airport security

20
Q

What is gamma used for?

A

Radiotherapy (cancer)

21
Q

What does ionising radiation do?

A

Causes atoms to become ions

22
Q

What do EM waves all do?

A

Travel at the same speed in a vacuum

23
Q

What are the dangers of microwaves?

A

Internal heating of body tissues

24
Q

What are the dangers of infrared?

A

Skin burns

25
Q

What are the dangers of ultraviolet, x-rays and gamma?

A

Cancer

26
Q

What is the amplitude of a wave?

A

From the centre to the peak

Physics (7 decks)

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