Nuclear Fusion and Nuclear Fission

Takes two small nuclei and combines them into a larger nucleus

• fission
• fusion

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The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

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Which process do nuclear power-plants use?

• Fusion

• Half-life

• Fission

• Fusion or fission

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This is an example of...

• Fission  reaction
• Fusion reaction
• Decomposition reaction
• Decay

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Where does fusion occur naturally?

• Underwater
• All around us
• In the radioactive waste
• On the sun

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Which atoms combine together during fusion reaction on the sun?

• Helium and Hydrogen atoms
• Hydrogen atoms
• Hydrogen and Lithium atoms
• Hydrogen and Carbon atoms

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An example of an uncontrolled fission reaction is _______________

• Nuclear power plants
• Radio active decay
• Atomic Bomb
• On the surface of the sun

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What does it mean that fusion is a "chain reaction?"

• many steps or mini-reactions in the process
• long chains of elements form in a row

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Do all stars make energy through fusion?

• Yes
• No
• Just our sun
• Only large stars

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Why do scientists most want to learn more about fusion?

• To win the Nobel prize
• To make energy for people to use
• To destroy the world
• To know more about stars

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