waves

Question 1

transverse waves

Answer 1

waves in which the direction of vibration of the particles about their equilibrium positions is at right angles/perpendicular to the direction of travel of the wave

Question 2

longitudinal waves

Answer 2

waves in which the direction of vibration of the particles about their equilibrium positions is parallel to the direction of travel of the wave

Question 3

crests

Answer 3

highest points of a transverse wave

Question 4

troughs

Answer 4

lowest points of a transverse wave

Question 5

amplitude

Answer 5

maximum displacement of a particle from rest or equilibrium position, in either direction

Question 6

wavelength

Answer 6

the shortest distance between any 2 points in a wave that are in phase

Question 7

frequency

Answer 7

number of complete waves produced per second

Question 8

period

Answer 8

time take for one point on the wave to complete one oscillation

Question 9

particles that are traveling in phase are:

Answer 9

1. traveling in the same direction
2. at the same speed
3. same displacement from equilibrium

Question 10

wave speed

Answer 10

distance travelled by a wave in one second

Question 11

wavefronts

Answer 11

imaginary lines joining through all points moving in the same phase;
lines joining through all the crests of a wave

Question 12

factors affecting speed

Answer 12

• mechanical properties of the medium

- friction in the water

Question 13

factors affecting frequency

Answer 13

• source of vibration/disturbance

Question 14

factors affecting affecting wavelength

Answer 14

• frequency

- speed

Question 15

factors affecting period

Answer 15

• speed

Question 16

speed of light

Answer 16

3.0x10^8 m/s

Question 17

what is a wave

Answer 17

a wave is a traveling disturbance that transfers energy from one place to another

Question 18

describe the movement of particles in the rope as the wave passed by

Answer 18

the particles 1 to 10 in the rope oscillate up and down about their equilibrium positions at right angles to the direction of propagation of the wave. each particle oscillates at the same amplitude and frequency as the wave passes through it.