elecromagnetic waves
for revision
- Created by: georgina wainwright
- Created on: 23-02-10 10:51
Other questions in this quiz
2. what can you use gamma rays for?
- to kill garden bugs.
- to kill certain cancer cells.
- to heat up food.
- for x-rays
- to clean dishwashers.
3. digital is worse for sending and recieving signals.
- False
- True
4. what do you used microwaves for?
- to send radio waves further.
- for heated bed covers.
- heating food and cleaning plates.
- heating food and communcating
- to heat radiators
5. what do digital signals look like?
- the waves arent curvey they are straight.
- they have lots of sharp edges.
- they are wavey.
- they go up when used.
- they wiggle.
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