What happens during nuclear fission?Multiple choice question.A nucleus captures an inner electron.A nucleus splits into smaller nuclei.Nuclei combine to form a large nucleus.A nucleus decays by emitting alpha or beta radiation.

Which statement describes the process of nuclear fusion?Multiple choice question.Large nuclei split into smaller nuclei.A nucleus emits alpha or beta particles, creating a new nucleus.Electrons from inner energy levels of the atom are captured by the nucleus.Small nuclei join to form a larger nucleus.

What process takes place when uranium-235 splits into two smaller nuclei plus neutrons?A.Beta decayB.FusionC.FissionD.Alpha decay

What is nuclear fission?The splitting up of a large and unstable nucleusThe process which causes the release of energy in the core of the SunThe decay of a radioactive nucleus (with the release of an alpha particle, a beta particle, a gamma ray or a neutron)The joining together of two small nuclei2Which of the following occurs in the reactor of a working nuclear power station which is connected to the National Grid?Nuclear fusionInduced fission onlySpontaneous fission onlyBoth spontaneous and induced fission3The motion of which of the following particles is responsible for nuclear (fission) chain reactions?ElectronsNeutronsProtonsAlpha particles4Which of the following elements can be used to stop neutrons within the control rods of a nuclear reactor?BerylliumBoronBismuthBarium5What is nuclear fusion?The process which causes the release of energy in the reactor of a working nuclear power station which is supplying electrical energy to the National GridThe splitting up of a large and unstable nucleusThe joining together of two small nucleiThe decay of a radioactive nucleus (with the release of an alpha particle, a beta particle, a gamma ray or a neutron)6Energy is released in both fission and fusion reactions.  Which of the following statements about these types of reactions is correct?The mass of the products is equal to the mass of the reactantsWhether the mass of the products is less than, equal to or greater than the mass of the reactants depends on the exact reaction which has taken placeThe mass of the products is less than the mass of the reactantsThe mass of the products is greater than the mass of the reactants

What happens in nuclear fusion?A.Nuclei spontaneously break down.B.Two separate nuclei form one nucleus.C.Missing mass is added back to a nucleus.D.Isotopes are made from gamma rays.

What happens during radioactive decay?A.An unstable nucleus loses particles until it becomes stable.B.An unstable nucleus absorbs radiation to make it stable.C.An unstable nucleus gains mass until it becomes stable.D.An unstable nucleus gains neutrons to make it stable.