Nuclear Reactions (Fusion & Fisson)

When two nuclei are combined into one nucleus, there is a slight change in mass and the release of a large amount of energy. What is this process called?

• conversion

• reaction

• fission

• fusion

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NGSS.HS-PS1-8

When some subatomic particles split from each other, energy is released. What kind of energy is this?

• chemical

• electrical

• mechanical

• nuclear

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NGSS.HS-PS1-8

Even though nuclear fission has been used to produce electric power for many decades, nuclear fusion power plants have not yet been developed. Why is nuclear fusion not used to produce power?

• Nuclear fusion generates much more energy than nuclear fission so it is much harder to control.

• Nuclear fusion reactions only occur at temperatures that are much greater than those of nuclear fission.

• Nuclear fusion can only occur in very dense places such as the center of a star while nuclear fission can occur on Earth.

• Nuclear fusion requires starting materials that are not readily available but uranium for nuclear fission is easy to find.

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NGSS.HS-PS1-8

An isotope is an atom of an element with a different number of

• protons

• electrons

• neutrons

• pencils

A nuclear reaction where a nucleus splits into two smaller nuclei is... 

• Fission
• Fusion
• Gamma decay
• Beta decay

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NGSS.HS-PS1-8

Which of the following is not an application of nuclear energy?

• generation of electricity

• chemotherapy for cancer

• creation of medicine

• recycling

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NGSS.HS-PS1-8

This is an example of...

• Fission  reaction
• Fusion reaction
• Decomposition reaction
• Decay

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NGSS.HS-PS1-8

What is a chain reaction?

• When electrons travel are emitted causing electricity
• When a nuclear fission reaction occurs, the protons 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
• When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split

Tags

NGSS.HS-PS1-8

Where does fusion occur naturally?

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

Tags

NGSS.HS-ESS1-1

Very high temperature and pressure is required for:

• Fission
•  Fusion
• Radioactive Decay