1194666
Question 1
Question
How many types of electromagnetic waves are there?
Answer
-
7
-
9
-
6
Question 2
Question
All EM waves can be refracted, reflected and difracted
Answer
- True
- False
Question 3
Question
What can happen to materials that absorb EM radiation?
Answer
-
It explodes
-
It heats up
-
It melts
-
It disintegrates
Question 4
Question
What is the wave equation?
Answer
-
velocity= frequency X wavelength
-
frequency --------------- speed X distance
-
time X mass X velocity
Question 5
Question
Which Greek letter represents 'wavelength'?
Answer
-
lamdaImage:njhhkf (image/png)
-
thetaImage:theta.gif (image/gif)
-
delta
Question 6
Question
Gamma rays destroy all living things in its path
Answer
- True
- False
Question 7
Question
What are Gamma rays released by?
Answer
-
Rocks
-
Living Things
-
Radioactive Material
Question 8
Question
Fibre Optic Broadband uses radio waves
Answer
- True
- False
Question 9
Question
What are the risks of UV light?
Answer
-
Cancer
-
Sunburn
-
Tanning
Question 10
Question
Radiotherapy uses microwaves to destroy cancerous cells
Answer
- True
- False
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