Radioactive End of Lesson

What does the equation E=mc^2 represent in the context of nuclear physics?

• The relationship between energy and mass

• The speed of light in a vacuum

• The charge of an electron

• The gravitational force between two masses

What is a nucleons?

• The number of protons and neutrons

• The number of nucleus

• The number of electron and proton

• The number of electron and neutrons

How do we get a number of proton based on an atom?

• Proton = Mass number - Atomic Number

• Proton = Atomic Number - Mass Number

• Proton = Atomic Number

• Proton = Mass Number

What does electron number similar with?

• Proton

• Neutron

• Nucleon

What force holds the nucleus together despite the repulsive electric force between protons?

• Weak nuclear force

• Strong nuclear force

• Electromagnetic force

• Gravitational force

Alpha radiation is the (a)   penetrating than beta and gamma radiation.

What is emitted during alpha decay?

• A beta particle

• A neutrino

• A gamma ray

• An alpha particle

What is radioactivity?

• The emission of light from a nucleus

• The decay of unstable nuclei emitting energetic particles

• The absorption of energy by a nucleus

• The fusion of two nuclei

Which type of decay involves the emission of high-powered photons?

• Gamma decay

• Beta decay

• Delta decay

• Alpha decay

Identify the types of radiation shown in the image.

a

b

c

Gamma rays

Alpha particles

Beta particles