Nuclear Fission and Fusion

What is Nuclear Fission?

• The process of combining two light atomic nuclei to form a heavier nucleus.

• The process of splitting a heavy atomic nucleus into two or more lighter nuclei, along with the release of energy.

• The process of converting energy into mass according to Einstein's equation.

• The process of capturing neutrons to create a stable atomic nucleus.

What is Nuclear Fusion?

• A process of splitting heavy atomic nuclei to release energy.

• A method of combining two light atomic nuclei to form a heavier nucleus, releasing energy.

• A technique used to cool down nuclear reactors.

• A reaction that occurs only in stars and not on Earth.

Where does natural Nuclear Fusion occur?

• In the core of stars, including our Sun.

• In the atmosphere of planets.

• In the crust of the Earth.

• In the oceans of the Earth.

What is the primary fuel used in Fission reactions?

• Plutonium-239 (Pu-239)

• Uranium-235 (U-235)

• Thorium-232 (Th-232)

• Uranium-238 (U-238)

What is the main difference between Fission and Fusion?

• Fission involves combining nuclei, while fusion involves splitting a nucleus.

• Fission involves splitting a nucleus, while fusion involves combining nuclei.

• Fission and fusion are the same processes.

• Fission occurs in stars, while fusion occurs in nuclear reactors.

What is a chain reaction in the context of Fission?

• A process where fission products cause additional fission events, leading to energy release.

• A method of controlling nuclear reactions to prevent explosions.

• A type of nuclear reaction that does not involve energy release.

• A reaction that occurs only in fusion processes.

What is the role of temperature in Fusion reactions?

• High temperatures provide the energy needed to overcome the repulsive forces between positively charged nuclei in fusion reactions.

• Temperature has no effect on fusion reactions.

• Lower temperatures increase the rate of fusion reactions.

• Temperature only affects the speed of the particles, not the fusion process.

What is a common application of Nuclear Fission?

• Generating electricity in nuclear power plants

• Producing medical isotopes

• Creating nuclear weapons

• Fueling rocket engines

What is the significance of the Sun in relation to Fusion?

• The Sun is a natural fusion reactor, where hydrogen nuclei fuse to form helium, releasing vast amounts of energy.

• The Sun primarily emits light through chemical reactions in its core.

• The Sun's surface temperature is too low for any fusion to occur.

• The Sun is a solid body that does not undergo any fusion processes.

What is Radioactive Decay?

• A process where stable atomic nuclei gain energy.

• A process by which an unstable atomic nucleus loses energy by emitting radiation.

• A method of increasing atomic stability through energy absorption.

• A phenomenon where atoms spontaneously change their chemical properties.