Brainscape's Knowledge GenomeTM

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


See full index

Physics - Topic 5 - Waves And Particle Nature Of Light > The Nature Of Waves > Flashcards

The Nature Of Waves Flashcards

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

A wave transfers energy away from its [………] .

A

A wave transfers energy away from its SOURCE

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

What can we also call a moving wave?

A

A progressive wave

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

How does a Progressive wave transfer energy?

A

Carries energy from one place to another without transferring any material

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

Which direction is the transfer of energy from a wave?

A

The same direction the wave is travelling

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

Examples of waves that carry energy.

A
  • Electromagnetic waves cause things to heat up - X Rays and Gamma rays knock electrons out of their orbits, causing ionisation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Diagram of a Wave (Transverse).

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

What is the Displacement of a wave?

A

How far a point has moved from its undisturbed position

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

What is the Amplitude of a wave?

A

The Maximum magnitude of the displacement

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

What is the Wavelength of a Wave?

A

The length of one whoe wave cycle, eg. crest to crest OR trough to trough

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

What are Wavelength, Amplitude & Displacement measured in?

A

Metres

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

What is the Period of a Wave?

A

The time talen for a whole cycle (vibration) to complete

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

What is the frequency of a wave?

A

The number of cycles (vibrations) per second passing a given point

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

What is the a Phase of a Wave?

A

A measurement of the position of a certain point along the wave cycle

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

What is the Phase Different of Waves?

A

The amount one wave lags behind another

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

What is the units for Frequency?

A

Hz

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

What is the equation for frequency including Period?

A

Frequency = 1/Period

17
Q

What is the Wavespeed equation? (with distance and time)

A

Wave Speed = Distance / Time

v = d/t

18
Q

What is the wave speed equation? (including Frequency and wavelength)

A

Wave Speed = Frequency X wavelength

v = fλ

19
Q

What does a Cathode Ray Oscilloscope measure?

A

Voltage

20
Q

On a Cathode Ray Oscilloscope what are the splits in the screen called?

A

Divisions

21
Q

On a Cathode Ray Oscilloscope the vertical axis is in [……]

A

Volts

22
Q

What button controls the volts per division on the vertical axis?

A

The gain dial

23
Q

On a Cathode Ray Oscilloscope the horizontal axis is in [….]

A

Seconds

24
Q

On a Cathode Ray Oscilloscope what is the seconds per division controlled by?

A

The timebase dial

25
Q

Why do you alter the gain and timebase dial?

A

To make it easy to read off measurements

26
Q

A [……..] converts sound waves into electrical signals which can be seen on an oscilloscope.

A

Microphone

27
Q

What can an oscillopscope be used for?

A

Used to find the speed of sound

28
Q

Diagram of the Apparatus needed to measure the speed of sound.

A
29
Q

When measuring the speed of sound what kind of Oscilloscope must be used and why?

A

A 2-beam oscilloscope so it can display two waves - one for the signal generator generating the sound wave and one for the same sound wave being received by the microphone.

30
Q

Method of Measuring the Speed of Sound?

A

1 - Set up apparatus

2 - Twist gain and timebase dials so you can see one complete cycle of each wave

3 - Change the distance between the microphone and loudspeaker sp the the peaks of wave A line up with the troughs of wave B and measure the distance.

4 - Calculate the frequency of the wave by finding the period and using f = 1/T because oscilloscope has a better resolution and gives a smaller uncertainty

5 - Move the microphone so that the wave on the oscilloscope moves one full wavelength along the signal generator, measure the distance

6 - Distance betweem your two measurements is the actual wavelength

7 - Repeat steps 5 -6 and use your results to find a mean

8 - Use equation v = f/λ to find the speed of sound

31
Q

In […….] wave vibration is at Right Angles to the direction of travel

A

Transverse wave

32
Q

What kind of waves are Electromagnetic waves?

A

Transverse

33
Q
A

Physics - Topic 5 - Waves And Particle Nature Of Light (6 decks)

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