General Properties of Waves

Question 1

How are Waves Formed?

Answer 1

1. Using rope to move up and down. (Transverse)
2. Using a water dipper (Transverse)
3. Using a spring (both)

Question 2

What are the types of wave motions?

Answer 2

1. Transverse Waves (Energy transferred is perpendicular to direction)
   
   1. Seismic S Waves
2. Longitudinal (Energy Transferred is parallel to direction )
   
   1. Seismic P Waves

Question 3

What are the parts of a wave?

Answer 3

Crest: Highest Point

Trough: Lowest Point

Amplitude: Depth of Trough (Half the Height)

Wavelength: Crest to Crest

Period (Time): One Wave

Question 4

How is Wave Speed Calculated?

Answer 4

v = f x wavelength

v = wavelength / Time period

wavelength = speed / frequency

Question 5

What happens when waves hit a straight barrier?

Answer 5

They reflect, angle i = angle r .

Question 6

What happens when waves pass from one medium to another?

Answer 6

The waves undergo refraction, if the density goes from low to high, it refracts towards the normal.

Question 7

What is diffraction?

Answer 7

Diffraction through a narrow gap provides circular waves.

Diffraction through a semi narrow gaps create rectangular curved ended waves.

Diffraction through one side causes straight with curved edges.