Nuclear Fission vs Fusion Quiz

What does nuclear fusion involve?

• Decay of radioactive elements

• Splitting of a large atom into smaller ones

• Combining lighter elements into a larger one

• Cooling of atoms to absolute zero

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What element is primarily used in nuclear fission?

• Hydrogen

• Carbon

• Helium

• Uranium-235

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What does the process of nuclear fission release?

• Only energy

• Only gamma rays

• Only neutrons

• Neutrons, gamma rays, and energy

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What is a byproduct of nuclear fission?

• Oxygen

• Helium

• Nitrogen

• Iodine 131

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How many nuclear reactors are operational worldwide?

• Over 500

• 439

• 320

• 250

Which two isotopes of hydrogen are used in nuclear fusion?

• Protium and Deuterium

• Tritium and Protium

• Helium and Protium

• Deuterium and Tritium

What temperature is estimated to be needed for nuclear fusion on Earth?

• 1 million degrees Celsius

• 100 million degrees Celsius

• 500,000 degrees Celsius

• 10,000 degrees Celsius

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What is the primary energy source of stars?

• Nuclear fission

• Chemical reactions

• Nuclear fusion

• Gravitational force

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What is a protostar?

• A very young star

• A dying star

• A star undergoing nuclear fission

• A star made entirely of helium

Which produces more energy?

• Chemical reactions

• Nuclear fission

• Nuclear fusion

• Both produce equal energy

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