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