Transverse and longitudinal waves

5.0(4)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/13

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

14 Terms

1
New cards
Waves can be drawn as wavefronts. What is a wavefront?
A wavefront can be thought of the peak of a transverse wave or the compression of a longitudinal wave.
2
New cards
What are oscillations?
to-and-fro movements
3
New cards
What are transverse waves?
When the oscillations are up and down or from side to side. In transverse waves, the oscillations are at right-angles to the direction of travel. Light waves are transverse waves, although it is electrical and magnetic fields which oscillate, rather than any material.
4
New cards
Example of transverse waves:
Electromagnetic waves:

* radio waves
* microwaves
* infrared rays
* light
* ultraviolet rays
* X-rays
* gamma rays
5
New cards
What are longitudinal waves?
When the oscillations are backwards-and-forwards, and the oscillations are in the directions of travel.

There are sections of compression and of rarefaction.

* When we speak - compressions and rarefactions travel through the air.
6
New cards
Examples of longitudinal waves:
Sound waves

* guitar string
* When we speak - compressions and rarefactions travel through the air.
7
New cards
What is the speed of waves measured in?
The speed of the waves is measured in metres per second (m/s)
8
New cards
What is the frequency of waves?

And what is the SI unit?
This is the number of waves passing any point per second. The SI unit of frequency is hertz (Hz).
9
New cards
What is the time for one oscillation called?

And what is it equal to?
A period.

It is equal to 1/frequency.
10
New cards
What is a period?
Period (in seconds) is the time for one oscillation.

Frequency = 1/period
11
New cards
A wave makes 4 oscillations per second. What is the frequency? And what is the period
A wave makes 4 oscillations per second, then 4 waves pass any point per second, and the frequency is 4 Hz. If the frequency is 4 Hz, the period is 1/4 s (0.25 s)
12
New cards
What is a wavelength?
The distance between any point on a wave and the equivalent point on the next.
13
New cards
What is amplitude?
This is the maximum distance a point moves from its rest position when a wave passes.
14
New cards
What is the wave equation?
Speed = frequency x wavelength