Fission and fusion

Which process inside the Sun generates energy?

May/June 2016

Which row is correct for nuclear fission and for nuclear fusion?

May/June 2017

Which row gives the correct information for nuclear fission and nuclear fusion?

May/June 2017

Which of the following statements about nuclear fusion is correct?

May/June 2021

In a fission reactor, which particle makes a uranium-235 nucleus split apart?

May/June 2023

What function do moderators have in nuclear reactors?

May/June 2023

Nuclear fusion is one method of generating energy. What does nuclear fusion mean?

May/June 2024

Which nuclear reaction provides the Sun with its energy?

May/June 2024

In fission, a uranium-235 (U-235) nucleus takes in one neutron and splits into two daughter nuclei plus three neutrons. Krypton-92 (Kr-92) is one of the daughter nuclei, and it has 92 nucleons. How many nucleons are in the other daughter nucleus?

May/June 2025

Which row identifies one benefit and one drawback of using nuclear fuel to produce electrical power?

May/June 2025

Fig. 8.1 shows a diagram of a nuclear reactor. Nuclear fission takes place in the fuel rods, which become hotter as a result. Thermal energy is transferred to the coolant flowing around the rods.

May/June 2025

Which row indicates where nuclear fusion happens and what nuclear fusion means?

Oct/Nov 2015

Which of the following statements about the reactor in a nuclear power station is correct?

Oct/Nov 2018

Which statement about electricity generation in a nuclear power station is correct?

Oct/Nov 2021

Which statement concerning the generation of electricity in a nuclear power station is correct?

Oct/Nov 2021

A nuclear reaction occurs at the Sun’s centre and this releases thermal energy.

Oct/Nov 2021

Uranium-235 ($^{235}_{92}\text{U}$) is the uranium isotope used as fuel in a nuclear power station.

Oct/Nov 2023

In space, a cloud of dust and gas in interstellar space collapses to produce a protostar. The cloud includes hydrogen.

Oct/Nov 2023