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Q 1/11
Score 0
Which part of the electromagnetic spectrum can we see with our eyes?
60
Infrared waves
Visible light
Radio waves
Ultraviolet waves
Q 2/11
Score 0
Background sources of radiation expose us to about 3 mSv dose of radiation each year. How much is this in Sv? (1 Sv = 1000 mSv)
60
300 Sv
0.003 Sv
3.000 Sv
3000 Sv
11 questions
Q.
Which part of the electromagnetic spectrum can we see with our eyes?
1
60 sec
6.6.2.1
Q.
Background sources of radiation expose us to about 3 mSv dose of radiation each year. How much is this in Sv? (1 Sv = 1000 mSv)
2
60 sec
6.4.2.4
Q.
Which part of the electromagnetic spectrum has the lowest frequency?
3
60 sec
6.6.2.1
Q.
An experiment compares the emission of infrared waves from different colour surfaces by filling the cans with hot water and measuring the drop in temperature over a certain time. Which variable should be different for each test?
4
120 sec
RP.21
Q.
Which of these experiments could show that infrared waves transfer
thermal energy?
5
60 sec
RP.21
Q.
Which waves are used for fibre-optic communications?
6
60 sec
6.6.2.4
Q.
How are radio waves produced?
7
60 sec
6.6.2.4
Q.
Why do ultraviolet waves have more energy than microwaves?
8
60 sec
6.6.2.2
Q.
Why would spying organisations trying to intercept communications prefer people to use the radio signals of their mobile phones, rather than sending computer messages via optical fibres?
9
120 sec
6.6.2.4
Q.
When experimenting with a cobalt-60 gamma ray source, why should a scientist always use a thick lead shield?
10
60 sec
6.4.2.4
Q.
Why are gamma rays useful for sterilizing surgical instruments?
