GCSE Nuclear Radiation

What are isotopes?

• Different elements that combine chemically

• Forms of an element with different numbers of neutrons

• Forms of an element with different numbers of protons

• Forms of an element with different numbers of electrons

How many of an element's isotopes are typically stable?

• All of them

• None of them

• Only one or two

• Half of them

What does it mean when a material is radioactive?

• It emits light continuously

• It consists of stable isotopes only

• It is harmful to humans in all forms

• It consists of unstable isotopes that can decay

What are alpha particles made of?

• Two protons and two electrons

• Two protons and two neutrons

• Two electrons and two neutrons

• One proton and one neutron

What can stop alpha particles?

• Five millimeters of aluminum

• A few centimeters of air

• A single sheet of paper

• Thick sheets of lead

What are beta particles?

• Electrons emitted from the nucleus

• Neutrons with a negative charge

• Helium nuclei

• Protons emitted at high speed

What is needed to stop gamma rays?

• Thick sheets of lead

• Several meters of air

• A single sheet of paper

• Five millimeters of aluminum

Which type of radiation is weakly ionizing?

• Alpha particles

• Beta particles

• Gamma rays

• Neutrons