What is nuclear fission?
Nuclear Reactions and Energy Concepts

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•
Science
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Nuclear fission is a nuclear reaction in which the nucleus of an atom splits into two or more smaller nuclei, along with the release of energy.
2.
FLASHCARD QUESTION
Front
What is nuclear fusion?
Back
Nuclear fusion is a process where two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process.
3.
FLASHCARD QUESTION
Front
What is the primary energy source in nuclear power plants?
Back
The primary energy source in nuclear power plants is the fission of uranium-235 (U-235) or plutonium-239 (Pu-239) nuclei.
4.
FLASHCARD QUESTION
Front
What is a nuclear chain reaction?
Back
A nuclear chain reaction is a series of reactions where the products of one reaction initiate further reactions, commonly seen in fission processes.
5.
FLASHCARD QUESTION
Front
What is thermal energy?
Back
Thermal energy is the energy that comes from the temperature of matter; it is the total kinetic energy of particles in a substance.
6.
FLASHCARD QUESTION
Front
What are fission fragments?
Back
Fission fragments are the smaller nuclei produced when a heavy nucleus undergoes fission.
7.
FLASHCARD QUESTION
Front
What role do neutrons play in nuclear reactions?
Back
Neutrons can initiate further fission reactions by colliding with other fissile nuclei, sustaining a chain reaction.
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