P1b Brain Quiz

The Ultimate Quiz For P1b Science

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What are the units of frequency?
Hz
1 of 18
Ultraviolet light can be used:
For fluorescent lights
2 of 18
About how long ago do scientists believe the universe began?
13,600 million years
3 of 18
Why is the light from distant galaxies red-shifted?
They are moving away from us.
4 of 18
What is one of the disadvantages of space telescopes?
They are difficult to maintain.
5 of 18
Isotopes of an element are different from normal atoms of the same element because they have a different number of ...
... neutrons.
6 of 18
What happens when a nucleus splits?
Radiation is released.
7 of 18
What particles are found in the nucleus of an atom?
Protons and neutrons
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A teacher used a Geiger counter to measure the radiation of a radioactive rock. Wrapping the rock in paper and aluminium foil had no effect on the count rate. What does this tell us about the rock?
The rock emits gamma radiation.
9 of 18
How do we change the rate of emission of radiation from a radioactive object?
We can't change the rate
10 of 18
What happens to photographic film when it is exposed to radiation and then developed?
It goes darker.
11 of 18
What do radiation badges do?
They monitor the radiation dose a worker receives.
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The half-life of an isotope is 1 hour. How long will it take for the count rate to fall to one-quarter of the starting rate?
2 hours
13 of 18
What happens to the half-life of a substance when it is put into a freezer?
It stays the same.
14 of 18
How do signals travel through optical fibres?
As infra-red radiation
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What is a signal that varies continuously in frequency called?
An analogue signal
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How many different states are there in a digital signal?
Two
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The distance from the crest of one wave to the crest of the next wave is called:
The Wavelenght
18 of 18

Other cards in this set

Card 2

Front

Ultraviolet light can be used:

Back

For fluorescent lights

Card 3

Front

About how long ago do scientists believe the universe began?

Back

Preview of the front of card 3

Card 4

Front

Why is the light from distant galaxies red-shifted?

Back

Preview of the front of card 4

Card 5

Front

What is one of the disadvantages of space telescopes?

Back

Preview of the front of card 5
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Comments

George Bennett

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Enjoy

Drew

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bbc bitesize questions, but still useful to have grouped

Drew

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the answer to Q2 is wrong

Sharmina

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i swear q2 is wrong and you copied 97% these from bitesize lmao, just did the bitesize quiz too:P But funny answers lol

:) PurpleJaguar (: - Team GR

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Yeah the answer to Q2 is wrong the actual answer should be: wave speed= frequency x wavelength other than that good quiz :)

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