Nuclear Radiation Quiz

What defines an isotope of an element?

• Different number of protons and neutrons

• Same number of neutrons, different number of protons

• Same number of protons, different number of neutrons

• Same number of protons and neutrons

What does it mean when a material is radioactive?

• It is made of helium

• It emits light

• It has stable isotopes

• It consists of unstable isotopes that can decay

Which of the following is NOT a type of nuclear radiation?

• Delta particles

• Gamma rays

• Beta particles

• Alpha particles

What is the composition of an alpha particle?

• One electron and one neutron

• Two electrons and two protons

• One proton and one neutron

• Two protons and two neutrons

How far can alpha particles travel in the air?

• Several kilometers

• A few millimeters

• Several meters

• A few centimeters

What is the charge of a beta particle?

• 0

• +1

• +2

• -1

How are beta particles produced?

• By the fusion of two protons

• By the decay of a neutron into a proton and an electron

• By the fusion of two neutrons

• By the decay of a proton into a neutron and an electron

What type of radiation are gamma rays?

• Protons

• Neutrons

• Electromagnetic waves

• Particles

What is required to stop gamma rays?

• A thin sheet of aluminium

• A few centimeters of air

• A single sheet of paper

• Thick sheets of lead or multiple meters of concrete

What happens when a nucleus has too many neutrons?

• It emits a beta particle

• It emits a neutron

• It emits an alpha particle

• It emits a gamma ray