waves

Question 1

progressive wave

Answer 1

energy is carried from 1 point to another by means of vibration/oscillations within the wave.

Question 2

transverse wave

Answer 2

vibrations/oscillations in the wave are perpendicular to the direction of transfer of energy of the wave.

Question 3

longitudinal wave

Answer 3

vibrations/oscillations in the wave are parallel to direction of transfer of energy of the wave.

Question 4

amplitude

Answer 4

maximum displacement of an oscillation from its equilibrium position.

Question 5

wavelength

Answer 5

shortest distance between 2 points on a progressive wave which are vibrating in place.

Question 6

period

Answer 6

time taken for a point in a wave to undergo 1 complete oscillation. it is also the time taken for a wave to travel a distance of 1 wavelength.

Question 7

frequency

Answer 7

number of complete cycles a point in a wave undergoes per unit time.

Question 8

speed

Answer 8

distance travelled by a wave profile per unit time.

Question 9

phase difference

Answer 9

a measure of how much 1 wave is out of step with another. it is the fraction of a cycle between 2 points in a wave or between identical points of 2 waves. (phase difference = change d/lambda x 2pi)

Question 10

intensity

Answer 10

the wave energy incident er unit time per unit area normal to the direction of travel of the wave. (I = P/A) (E=ka²) (I directly proportional to a²)