Electromagnetic Spectrum

Question 1

What are the seven parts of the electromagnetic spectrum, in order?

Answer 1

Left} Radio
Micro
Infared
Visible light
Ultra violet
X-ray
Gamma

Question 2

On the left side of the electromagnetic spectrum {radio waves} is the frequency high or low?

Answer 2

Low

Question 3

On the left side of the electromagnetic spectrum {radio waves} is the wavelengths long or short?

Answer 3

Long

Question 4

On the left side of the electromagnetic spectrum {radio waves} is the energy high or low?

Answer 4

Low

Question 5

What is special about micro, infared, visible light and ultra violet?

Answer 5

They all have heating effects

Question 6

What’s special about microwaves?

Answer 6

It has a range of different wavelengths and frequencies

Question 7

What is the visible light spectrum?

Answer 7

Red
Orange
Yellow
Green
Blue
Indigo
Violet

Question 8

What’s a use of radio waves?

Answer 8

Communication
Radio
Tv
Mobile phones
Bluetooth

Question 9

What’s a hazard of radio waves?

Answer 9

None are known

Question 10

What’s a use of micro waves?

Answer 10

Heating effect
Communication
Mobile phones

Question 11

What’s a hazard of micro waves?

Answer 11

Possible internal heating of body tissues

Question 12

What’s a use of infared waves?

Answer 12

Heating effect
Cameras
Scanners
Remote controls

Question 13

What’s a hazard of infared waves?

Answer 13

Heat

Burns skin

Question 14

What’s a use of visible light?

Answer 14

Photos

Fibre optic cables

Question 15

What’s a hazard of visible light?

Answer 15

Can damage the eyes

Question 16

What’s a use of ultra violet light?

Answer 16

Sun beds

Checking for counterfeit money and passports

Question 17

What’s a hazard of ultra violet light?

Answer 17

Can cause skin cancer

Question 18

What’s a use of X-rays?

Answer 18

Scanning for broken bones

Scanning bags in airports

Question 19

What’s a hazard of X-rays?

Answer 19

Can cause cancer

Any dose can be fatal

Question 20

What’s a use of gamma rays?

Answer 20

Sterilising food
Sterilising surgical equipment
Treating cancer

Question 21

What’s a hazard of gamma rays?

Answer 21

Causes cancer

Any dose can be fatal

Question 22

What types of waves are electromagnetic waves?

Answer 22

Transverse

Question 23

What are electromagnetic waves?

Answer 23

Electric and magnetic disturbances that transfer energy from one place to another

Question 24

What do all electromagnetic waves travel at?

Answer 24

The speed of light

Question 25

What is ionising?

Answer 25

Ionising is adding or removing an electron in an atom

Question 26

What are the radiations that have ionising radiation?

Answer 26

Gamma, X-rays and ultra violet

Question 27

What are the two steps of communicating using radio waves?

Answer 27

Transmitter produces alternating current, radio waves are emitted at same frequency as this current --> receiver aerial absorb waves

Question 28

What can interference be caused by?

Answer 28

Signal from a different radio stations using the same frequencies

Question 29

What are radio waves converted into?

Answer 29

An alternating current

Question 30

What is diffraction?

Answer 30

Where a wave bends when passing through a gap

Question 31

If a wave passes through a gap bigger than it, how does the wave refract?

Answer 31

It bends a little bit

Question 32

If a wave passes through a gap smaller than it, how does the wave refract?

Answer 32

Wave doesn't bend at all

Question 33

What two things can radio waves do?

Answer 33

Refract and reflect

Question 34

Which radio waves refract, which radio waves reflect?

Answer 34

Long waves refract, short waves reflect

Question 35

What are the steps of a signal from a phone making a call to a person close to you?

Answer 35

Mobile phone sends our microwave signal to base station, which then goes to the receiving phone

Question 36

What are the steps of a signal from a phone making a call to a person far away from you?

Answer 36

Mobile phone sends our microwave signal to satellite, which is then sent to base station, which then goes to the receiving phone

Question 37

What are oscillations?

Answer 37

Movements back and forth in a regular rhythm

Question 38

How are radio waves detected?

Answer 38

By producing oscillations in circuits attached to an Ariel

Question 39

What two things emits infared radiation?

Answer 39

Toasters and grills

Question 40

How would infrared travel down glass?

Answer 40

The light is reflected down the glass

Question 41

What three things can happen to electromagnetic waves when they hit a surface?

Answer 41

They can be reflected, absorbed or transmitted

Question 42

What do HOW waves behave depend on?

Answer 42

Their energy and material around them

Question 43

What can ionising radiation do?

Answer 43

Damage `DNA in cells, killing them

Question 44

What direction would a particle in a transverse wave move in? What direction would the transverse wave move in?

Answer 44

Particle Up and down, wave to the right

Question 45

What direction would a particle in a longitudinal wave move in? What direction would the longitudinal wave move in?

Answer 45

Particle back and forth left to right, wave to the right

Question 46

What is an example of a longitudinal wave?

Answer 46

Sound

Question 47

What is an example of a transverse wave?

Answer 47

Light, water, everything in the electromagnetic spectrum

Question 48

What do waves do in a medium?

Answer 48

Waves transfer energy through a medium without transferring matter