REVISION

What wave is missing and how does its frequency compare with

gamma waves?? (2)GAMMA

XRAY

VISIBLE

MICROWAVES

INFRARED

RADI

OWAVES

Which three types of waves are used in communications (3)

Which electromagnetic waves can be used to cook these? (2)

Which electromagnetic are used by each of these devices? (2)

REMOTE

CONTROLE

MOBILE PHONE

What is the difference between digital signals and analogue signals?

(2)

Explain how radio waves are received by houses on the other side of hills (3)

Explain how optical fibres are used in surgery (4)

Which three types of waves cause cancer? (3)

What is section C called and is it solid, liquid or both? (2)

A

B

C

D

Explain how microwaves cook food through to the centre (3)

Between which two letters is the amplitude? (1)

A B C

D

E

F

Why are more and more people getting skin cancer and why are dark skinned people less

at risk than light skinned people? (4)

How do infrared waves cook through to the centre of food?? (2)

Explain how microwave TV signals are sent long distances (3)

Why do S waves show us there is a liquid layer inside the Earth? (3)