quiz about fission and fusion

The energy of stars is produced through nuclear fusion.

• • True

• • False

What happens during nuclear fission?

• 1. Atoms combine to form molecules.

• 1. Electrons are transferred between atoms.

• 1. A large nucleus splits into smaller nuclei, releasing energy.

• 1. Two smaller nuclei combine to form a larger nucleus.

Which of the following is a result of nuclear fusion?

• 1. The Sun’s energy

• 1. Chemical reactions in batteries

• 1. Burning fossil fuels

• 1. Nuclear reactor energy

What process is illustrated?

• 1. Combustion

• 1. Nuclear fusion

• 1. Nuclear fission

• Photosynthesis

Which of the following is an example of nuclear fission?

• 1. A chemical reaction between acids and bases.

• 1. The combining of hydrogen atoms in the Sun.

• 1. The splitting of uranium-235 in a nuclear reactor.

What is a chain reaction in nuclear fission?

• 1. The repeated splitting of atoms by released neutrons.

• 1. The combination of multiple atoms into one.

• 1. A series of chemical reactions.

What condition is required for nuclear fusion to occur?

• 1. High temperature and pressure

• 1. Low temperature and pressure

• 1. No energy input

• 1. The presence of water

Why is nuclear fusion considered safer than fission?

• 1. It produces less radioactive waste.

• 1. It cannot cause a chain reaction.

• 1. It is harder to control.

• 1. Both 1 and 2.

What is the primary fuel used in nuclear fission reactors?

• 1. All of the above

• 1. Thorium-232

• 1. Plutonium-239

• 1. Uranium-235

What is the main challenge in achieving controlled nuclear fusion on Earth?

• 1. Storing the energy produced.

• 1. Reducing radioactive waste.

• 1. Finding suitable fuel sources.

• 1. Maintaining high temperatures and pressures.