C.2 Wave model

Question 1

Mechanical wave

Answer 1

Require a medium for propagation

Question 2

Electromagnetic wave

Answer 2

Can travel through a vacuum or a medium

Question 3

Wave definition

Answer 3

A disturbance that transfers energy from point to point

Question 4

Transverse wave

Answer 4

Direction of energy transfer is 90 degrees to the direction the particles vibrate

Question 5

Longitudinal wave

Answer 5

Direction of energy transfer is parallel to the direction the particles vibrate

Question 6

Frequency

Answer 6

Number of oscillations per second (hz)

Question 7

Wavelength

Answer 7

Distance between two crests or troughs on the wave

Question 8

Period

Answer 8

Time it takes for one wavelength to pass a point

Question 9

Amplitude

Answer 9

Max displacement of a particle from its equilibrium position

Question 10

Wave speed

Answer 10

Distance a wave moves forward per second (m/s)

Question 11

Displacement-distance graph

Answer 11

Displacement of the medium varies with distance along the wave at one instant

Question 12

Displacement-time graph

Answer 12

Variation of time with the motion of one place in the medium

Question 13

Sound wave

Answer 13

Can travel in gases, liquids and solids

Question 14

Traits of electromagnetic waves

Answer 14

Transverse, can travel through a vacuum, set speed in a vacuum, arise from motion of accelerated electrons, have wavelength and frequency