Topic 4- Waves Flashcards
1
Q
What do waves transfer?
A
- Energy
- Not matter
2
Q
How do we know matter doesn’t move in sound and light waves?
A
Light- particles oscillate up and down
Sound- particles vibrate back and forth
- Ducks (toy) don’t move in water
3
Q
What is frequency?
A
How many waves per second
4
Q
What is wavelength?
A
Length of a full wave, from peak to trough
5
Q
What is amplitude?
A
- The height, equilibrium to thee peak/trough
- Loudness of a sound wave,
6
Q
What is the period?
A
How many seconds it takes one complete wave to pass a point.
7
Q
What is the wave velocity?
A
- Speed of the wave in a given
direction - changes in different mediums
8
Q
What is a wavefront?
A
- Lines that show the peak of a wave that vibrate in unison.
- Equal distance from eachother
9
Q
What is a longitude wave?
A
- A wave with areas of compression and rarefaction
- Oscillations occur parallel to the energy movement
- sound waves
10
Q
What is a transverse wave?
A
- Wave with a peak and trough
- Oscillations occur perpendicular to the energy movement
- Light/electromagnetic waves
11
Q
What are two examples of longitudinal waves?
A
- Sound
- P seismic
12
Q
What are three examples of transverse waves?
A
- Electromagnetic (light)
- S seismic
- Water
13
Q
What are properties of P seismic waves ?
A
- Can travel through solids and liquid
- Produced by earthquakes
- Faster than S seismic
14
Q
What are properties of S seismic waves ?
A
- Slower than P seismic
- Only travel through solids
- More destructive
15
Q
How do we calculate wave speed?
A
Wave speed= frequency x wavelength
v=fxλ
