Types of radiation

Name the three types of particles that make up an atom.

• Protons, Neutrons, Electrons

• Protons, Neutrons, Photons

• Protons, Electrons, Quarks

• Neutrons, Electrons, Quarks

What are the three types of radioactive decay?

• Alpha, Beta, and Delta

• Alpha, Beta, and Gamma

• Alpha, Gamma, and Delta

• Beta, Gamma, and Delta

What happens to a nucleus when the nuclear strong force no longer balances the force of electrostatic repulsion?

• It becomes stable.

• It becomes unstable.

• It remains unchanged.

• It splits into two.

What force needs to balance the electrostatic repulsion to keep a nucleus stable?

• Gravitational force

• Magnetic force

• Nuclear strong force

• Weak nuclear force

What does the nucleus do when it becomes unstable?

• It absorbs more mass or energy.

• It gets rid of mass or energy to try and become stable again.

• It remains unchanged.

• It splits into two equal parts.

What is an alpha particle made up of?

• 2 protons and 2 neutrons

• 2 protons and 2 electrons

• 2 neutrons and 2 electrons

• 1 proton and 1 neutron

What is the charge of an alpha particle?

• -2

• +1

• +2

• 0

What is the approximate mass of an alpha particle?

• 1 a.m.u

• 2 a.m.u

• 3 a.m.u

• 4 a.m.u

How does the mass of an alpha particle affect its travel speed?

• Larger mass, travels faster

• Smaller mass, travels slower

• Larger mass, travels slower

• Smaller mass, travels faster

What is lost from the nucleus during alpha decay?

• Two electrons and two protons

• Two neutrons and two protons

• Two neutrons and two electrons

• Two protons and two positrons