Fission and Fusion

Takes two small nuclei and combines them into a larger nucleus

• fission
• fusion

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NGSS.HS-ESS1-1

NGSS.HS-PS1-8

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

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NGSS.HS-PS1-8

How do nuclear power-plants work?

• 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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NGSS.HS-ESS1-1

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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NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

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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NGSS.HS-PS1-8

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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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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NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Which of these statements correctly describes how the chain reaction occurs in nuclear fission.

• Uranium releases electrons to create   electricity
• When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split
• When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split
•  Protons and neutrons change to electrons because the nuclei are so big

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NGSS.HS-PS1-8