EDEXCEL PHYSICS ADDITIONAL P2 QUIZ VARIOUS TOPICS

Please don't use this quiz as a staple revision source. I have made flash cards for P2 (not electronically) and when filtering through which answers I know and which I don't, this quiz is based on all the flash cards I didn't know. 

What happens in radiotherapy?
A gamma source of cobalt is used to target cancerous cells by rotating an intense beam of gamma rays, most cancer cells can be killed with little damage to healthy cells.
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What is exponential decay in half life?
When a quarter of the nuclei will decay in half the time etc etc.
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Advantages of nuclear power?
Produced waste is compact, low risk of nuclear accidents, very little background radiation produced
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Disadvantages of nuclear power?
Expensive, bad reputation with the public, waste is radioactive for years
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What will experience air resistance?
All objects moving in the air experience air resistance
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What is terminal velocity?
A constant velocity - when air resistance is equal to the weight of the object and the resultant force is now 0
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How does the KE produced from fission, in nuclear power stations, power turbines?
When KE is turned into heat and used to boil water to make steam - the steam powers turbines
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How do coolants control chain reactions?
Removing the thermal energy produced in fission reactions so it can be used to heat water to produce steam to power turbines
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How do moderators increase rates of fission?
Slowing down fast-moving neutrons because slow moving neutrons are more likely to be absorbed by the uranium atom
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What is critical mass?
The minimum mass of fissile material (uranium) that is able to sustain a chain reaction.
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What is cold fusion?
A theory that nuclear fusion could be done at room temperature (however it was rejected as it couldn't be validated)
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Other cards in this set

Card 2

Front

What is exponential decay in half life?

Back

When a quarter of the nuclei will decay in half the time etc etc.

Card 3

Front

Advantages of nuclear power?

Back

Preview of the front of card 3

Card 4

Front

Disadvantages of nuclear power?

Back

Preview of the front of card 4

Card 5

Front

What will experience air resistance?

Back

Preview of the front of card 5
View more cards

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