Question 1
Question
True or false? Nuclear fission is caused by firing a neutron at a fissionable nucleus.
Question 2
Question
What is enriched uranium?
Question 3
Question
Which of these roles does water perform in a nuclear reactor?
Answer
-
Reactor core
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Pressuriser
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Moderator
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Control rods
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Coolant
Question 4
Question
Which part of the nuclear fission reactor is made out of boron?
Answer
-
Reactor core
-
Turbine
-
Control rods
Question 5
Question
Which type of nuclear reaction takes place in stars?
Answer
-
Nuclear fission
-
Nuclear fusion
Question 6
Question
True or false? Two protons fuse to produce "heavy helium".
Question 7
Question
True or false? In a fusion reactor, the temperature must be very high to overcome forces of reaction and the plasma must be contained in a magnetic field.
Question 8
Question
What is the reaction product of fusion of hydrogen?
Answer
-
Uranium
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Lithium
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Thorium
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Helium
Question 9
Question
What type of radiation is radon gas a source of?
Question 10
Question
Where was there a nuclear accident in 1986?
Answer
-
Bikini Atoll
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Fukushima
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Chernobyl
Question 11
Question
How can workers reduce their radiation dose?
Answer
-
Keeping a safe distance from radiation sources
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Using lead or concrete sources to shield themselves
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Wearing rubber gloves
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Drinking a glass of water after exposure
Question 12
Question
When was the Big Bang?
Answer
-
3 million years ago
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13 million years ago
-
3 billion years ago
-
13 billion years ago
Question 13
Question
What name do we give a large cluster of stars?
Answer
-
Comet
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Constellation
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Asterism
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Galaxy
Question 14
Question
True or false? The "Dark Age" of the universe began when the universe became transparent.
Question 15
Question
True or false? A protostar is a star that is at the end of its life cycle.
Question 16
Question
Which stages would you expect a star to go through if it were a small main sequence star?
Answer
-
Red supergiant
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Red giant
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White dwarf
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Supernova
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Black hole
-
Black dwarf
-
Neutron star
Question 17
Question
Which stages would you expect a star to go through if it were a large main sequence star?
Answer
-
Red supergiant
-
Red giant
-
White dwarf
-
Supernova
-
Black dwarf
-
Black hole
-
Neutron star
Question 18
Question
What is the heaviest element that can be formed by nuclear fusion?
Question 19
Question
True or false? Heavy elements such as lead are formed during supernovae.
Question 20
Question
True or false? The heaviest naturally-occurring element is mendelevium.