11 - Waves 1

Question 1

Progressive wave

Answer 1

Waves which move from pace to place without the transfer of matter

Question 2

Displacement

Answer 2

The distance of a point on the wave from its equilibrium position

Question 3

Amplitude

Answer 3

The maximum displacement of a particle in the wave from its equilibrium position

Question 4

Wavelength

Answer 4

The distance between points on successive oscillations of the wave that are in phase

Question 5

Period

Answer 5

The time taken for one complete oscillation or cycle of the wave

Question 6

Phase difference

Answer 6

How much a point or a wave is in front or behind another

Question 7

Frequency

Answer 7

The number of complete oscillations per unit time

Question 8

Speed

Answer 8

The distance travelled by the wave per unit time

Question 9

Polarisation is when:

Answer 9

Particle oscillations occur in only one of the directions perpendicular to the direction of wave propagation

Question 10

Intensity is proportional to

Answer 10

Amplitude^2

Question 11

Progressive Wave Characteristics

Answer 11

• all points have the same amplitude
• points exactly a wavelength apart are in phase
• no nodes or antinodes
• energy is transferred