Physics STEMscopedia 8 - Section 5 - Fission vs. Fusion

What occurs during nuclear fission?

• Two small nuclei collide to form a larger nucleus.

• A large, unstable atom is split into two or more smaller nuclei.

• Nuclei combine to form a stable helium nucleus.

• A neutron is absorbed by a helium nucleus.

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What is emitted during nuclear fission that is actually a helium nucleus?

• Gamma ray

• Neutron

• Beta particle

• Alpha particle

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Which condition is necessary for nuclear fusion to occur?

• High pressure and high temperature

• Low pressure and low temperature

• Absence of neutrons

• Presence of isotopes of uranium

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What is the main source of the Sun's energy?

• Magnetic fields

• Nuclear fusion

• Chemical reactions

• Nuclear fission

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What is the result of nuclear fusion?

• Two or more smaller nuclei flying apart

• A more massive, single nucleus with greater net binding energy

• A smaller, single nucleus with less net binding energy

• Stable isotopes of uranium and plutonium

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What type of bomb is based on nuclear fusion?

• Atomic bomb

• Hydrogen bomb

• Neutron bomb

• Plutonium bomb

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What plays a crucial role in the extremely close components found in atomic nuclei?

• Chemical bonds

• Electromagnetic interactions

• Gravitational forces

• Strong and weak nuclear interactions

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Why must nuclear energy be handled with caution?

• It is unlimited and easily accessible.

• It can only be used for medical benefits.

• It has the potential for significant energy release and radioactive decay.

• It requires low pressure and temperature to control.

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