Radioactivity

Front

What is radioactivity?

Back

Radioactivity is the process by which unstable atomic nuclei lose energy by emitting radiation.

Front

What are the three main types of radiation?

Back

Alpha particles, beta particles, and gamma rays.

Front

What is an alpha particle?

Back

An alpha particle consists of 2 protons and 2 neutrons, and is emitted during radioactive decay.

Front

What is a beta particle?

Back

A beta particle is a high-energy, high-speed electron or positron emitted during radioactive decay.

Front

What is gamma radiation?

Back

Gamma radiation is a form of electromagnetic radiation of high frequency and energy, emitted from radioactive decay.

Front

What is nuclear fission?

Back

Nuclear fission is the process of splitting a heavy nucleus into smaller nuclei, releasing energy.

Front

What is nuclear fusion?

Back

Nuclear fusion is the process of combining two light atomic nuclei to form a heavier nucleus, releasing energy.

Front

How does radiation interact with matter?

Back

Radiation can ionize atoms, leading to chemical changes and potential damage to living tissues.

Front

What material can stop alpha particles?

Back

Alpha particles can be stopped by a sheet of paper.

Front

What material can stop beta particles?

Back

Beta particles can be stopped by a few millimeters of plastic or glass.