Brainscape's Knowledge GenomeTM

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


See full index

Science > Waves > Flashcards

Waves Flashcards

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

What is a wave

A

An osscillation (movement back and forth) or vibration that transfers energy or information.

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

Features of a wave

A

Amplitude, frequency and wave length

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

Amplitude meaning

A

The distance from the middle to the top or bottom of a wave.

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

Frequency meaning

A

The number of waves that go past a particular wave in a second.

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

Wave length meaning

A

The distance from one point of a wave to the same point on the next wave.

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

What is the top of a wave called

A

Peak or crest

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

What is the bottom of a wave called

A

Trough

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

What is a transverse wave

A

Oscillation is at 90 degrees to the direction of the wave.

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

Longitudinal wave

A

Oscillation is parallel to the direction of the wave.

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

Compression wave

A

The coils of the spring are close together.

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

Rarefaction

A

Coils are further apart.

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

Reflecting waves

A

Waves bounce off surfaces and barriers just like a football bounces off a ball. This is reflection

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

Incident wave

A

The wave coming into the barrier

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

Reflected wave

A

The wave bouncing off

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

Adding waves

A

When waves are put together they superpose. This means they add up or cancel out.

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

What is a soundwave

A

A vibration produces a soundwave eg speakers/headphones.

17
Q

What does sound travel through

A

Sound needs a medium like a solid, liquid or gas to travel through. It cannot travel through an empty space like a vacuum because there are no empty spaces.

18
Q

How does sound travel

A

Air molecules move backwards and forwards

19
Q

How fast does sound travel

A

Sound travels faster in solids because their particles are closer together, so the vibration is passed along quicker.

20
Q

What travels faster: sound or light

A

Light travels faster - light can travel through a vacuum it doesn’t need a medium.

21
Q

What affects loudness of a sound eg if you band a drum harder

A

You produce a louder sound, this has a bigger amplitude and transfers more energy

22
Q

What affects the pitch of a sound

A

Frequency

High pitched sounds have a high frequency

Low pitched sounds have a low frequency

23
Q

How is frequency measured

A

kilohertz (kHz) or hertz (Hz)

1 kHz = 1000Hz

24
Q

What does audible range mean

A

You can only hear a particular range of frequencies

You have the biggest audible range when you are young

25
Q

Infrasound

A

Frequencies below 20Hz

26
Q

Ultrasound

A

Frequencies above 20,000Hz

27
Q

The Ear Parts

A

Pinna - part of the ear you can see

Science (17 decks)

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