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Physics Yr 10 > Nuclear > Flashcards

Nuclear Flashcards

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1
Q

What equation is Einstein famous for?

A

E=MC(2)

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2
Q

Which element provides fuel for a nuclear bomb?

A

Uranium

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3
Q

Who came to see Einstein and why?

A

Leo Szilard to write a letter to president rooseveld.

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4
Q

When was the letter written?

A

1939

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5
Q

Which two ideas did Einstein connect together?

A

Energy and mass

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6
Q

Why does a small amount of mass turn into a lot of energy?

A

Speed of light squared gives a big number.

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7
Q

How much energy is in a glass of water?

A

Enough to power London for a week

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8
Q

When did Einstein publish the equation?

A

1905

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9
Q

What is the nuclear fuel in the sun?

A

Hydrogen

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10
Q

What is his famous quote from 1935?

A

It is like shooting birds in the dark in a country in which there are very few birds.

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11
Q

Who convinced Einstein that a nuclear bomb was a possibility?

A

Leo Szilard.

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12
Q

Could natural radioactivity be used to make a bomb?

A

No it didn’t produce enough heat

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13
Q

What type of nuclear reaction was involved in the bomb?

A

Fission

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14
Q

Which particles were the scientists using to split the uranium atoms?

A

Alpha

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15
Q

What is the problem with nuclear fission in terms of energy?

A

You out in more than you get out.

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16
Q

What was the problem with alpha particles?

A

They’ve got a positive charge

17
Q

What particle did Leo Szilard realise would work?

A

Neutron

And it would produce more neutrons

18
Q

What did the nazis begin to do?

A

Stock piled uranium

Began a bomb programme

19
Q

How long did it take for the letter to reach the president?

A

8 weeks

20
Q

What are the similarities between fission and fusion?

A
  • Both produce radioactive particles, fission produces more.
  • both are nuclear reactions
  • both produce great energy
21
Q

What are the differences between fission and fusion?

A
  • fusion occurs in the sun, Fission doesn’t normally occur in nature
  • fission takes little energy but fusion requires high energy
  • fusion releases more energy
22
Q

What is fission?

A

Splitting a large atom into two or more smaller ones

23
Q

What is fusion?

A

Fusing two or more lighter atoms together

24
Q

What do control rods do?

A

Absorb neutrons and stop the chain reaction to proceed further.

25
Q

What is a graphite monitor?

A

Only neutrons of a fairly low speed should be used to have controlled chain reaction.

26
Q

What are fuel rods?

A

The fission at the electoral used in the reactor, is cancelled by fuel.

27
Q

What does concrete casing/pressure vessel do?

A

Contain the radiations

Physics Yr 10 (3 decks)

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