Chapter 4 | Waves

Question 1

A duck is sitting on a pond, and the water is moving in waves, how does it move and why?

Answer 1

The waves are moving in one direction, the duck moves over the waves and the duck stays in one spot.

Question 2

Waves propagate in two (2) ways, name them and how they work.

Answer 2

1. Transverse waves. They have perpendicular movement.

2. Longitudinal waves. They have parallel movement.

Question 3

There are two (2) types of waves, name them and their info.

Answer 3

1. Transverse:
   - Propogates (moves/speed) perpendicular to the motion of the medium
   - Crest = highest point
   - Trough = lowest point
2. Longitudinal:
   - Propogates parallel to the motion of the medium
   - Particles move closer together then farther apart

Question 4

Name the characteristics of a wave:

Answer 4

-Amplitude:
Max distance travelled by a particle in the medium compared to the equilibrium
-Wavelength:
The length of a waves complete cycle =
*Crest to Crest for transverse waves
**Area of rarefaction to area of compression for longitudinal waves
-Frequency:
Hot cycles per unit of time measure in Hertz (Hz)