Wave Motion

Question 1

Wave Fronts

Answer 1

A line joining the points at the same position along a wave

Question 2

Periodic Time

Answer 2

The time it takes for an oscillation to repeat

Question 3

Frequency

Answer 3

The number of oscillations of cycles in one second

Question 4

Frequency / Time Period Equation

Answer 4

f = 1/T

Question 5

Wave Equation

Answer 5

Velocity = frequency x wavelength

Question 6

Phase

Answer 6

Waves are the same

Question 7

Phase difference

Answer 7

Described through radians, how many cycles the wave is out of phase

Question 8

0 / 360 degrees in radians

Answer 8

2 pi

Question 9

180 degrees in radians

Answer 9

pi

Question 10

90 degrees in radians

Answer 10

2/pi

Question 11

270 degrees in radians

Answer 11

3pi/2

Question 12

Transverse Waves

Answer 12

Displacements perpendicular to the wave velocity

Question 13

Radio Wave Wavelength

Answer 13

10^3 - 10^1

Question 14

Microwave Wavelength

Answer 14

10^-2

Question 15

Infrared Wavelength

Answer 15

10^-5

Question 16

Visible Wavelength

Answer 16

10^-7

Question 17

Ultra Violet Wavelength

Answer 17

10^-8

Question 18

x-ray Wavelength

Answer 18

10^-10

Question 19

Gamma Wavelength

Answer 19

10^-12

Question 20

Constructive Interference

Answer 20

Two Troughs / Two Crests in phase create a wave doubled in intensity

Question 21

Destructive Interference

Answer 21

Two Troughs / Two Crests out of phase create a wave halved in intensity

Question 22

Longitudinal Waves

Answer 22

Displacements in the same direction as the wave velocity

Question 23

EM waves

Answer 23

Made up of electric and magnetic fields

Question 24

EM waves travel at

Answer 24

3x10^8 ms-1