EM (not finished yet)

Question 1

Transverse waves

Answer 1

Waves in which all points oscillate along paths at right angles to the direction of the wave’s advance. For example EM waves.

Question 2

Longitudinal waves

Answer 2

Vibration is parallel to direction of the energy transfer. For example, a tsunami or a sound wave.

Question 3

Wavelength

Answer 3

How far the wave travels between peaks.

Question 4

Amplitude

Answer 4

How much the wave vibrates. It is usually half of the graph height.

Question 5

Frequency

Answer 5

The number of waves per second past a certain point.

Question 6

Spectrum of EM waves

Answer 6

Radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays.

Question 7

Radio Waves

Answer 7

Longer wavelength than visible light (10^3), lower frequency, used in communications, thus the name.

Question 8

Microwaves

Answer 8

Wavelength longer than visible light(10^-2), also lower frequency (300MHz to 300GHz). Is used in communications, radar and cooking.

Question 9

Infrared

Answer 9

Longer wavelength than visible light (10^-5). Is used in remote controls.

Question 10

Visible Light

Answer 10

(0.5x10^-6)

Question 11

Ultraviolet

Answer 11

(10^-8)

Question 12

X-rays

Answer 12

(10^-10)

Question 13

Gamma Rays

Answer 13

(10^-12)

Question 14

Reflection

Question 15

Transmission

Question 16

Absorption

Question 17

Colours

Question 18

Law of Reflection

Question 19

Refraction

Question 20

3 Forms of Ionising Radiation