Unit 1: Physical Science

When the nucleus of an atom breaks down...

• Radioactivity

• Beta

• Fusion

• Fission

when nucleus emits a particle or radiation to become stable

• Radioactive decay

• Radioactive growth

• fission

• fusion

3 types of radioactivity

• Alpha

• Beta

• Gamma

• Sigma

What is the process in which an unstable atomic nucleus emits charged particles or energy or both?

• radioactivity

• oxidation

• decomposition

• none of the above

radioactivity is

• the energy that came from radius

• The energy that is released from the nucleus of the atom

• the energy that is released from the outer shell of the atom

particles that consists of 2 protons and 2 neutrons (helium nucleus), positive charge

• Alpha

• Beta

• Gamma

• Fission

• Fsusion

stopped by a thin sheet of paper

• Alpha

• Gamma

• Beta

negatively charged electron, faster and more penetrating then Alpha

• Alpha

• Beta

• Gamma

stopped by a thin sheet of metal

• Alpha

• Beta

• Gamma

short wave of electromagnetic energy, MOSTpenetrating

• Alpha

• Beta

• Gamma