untitled

_____is the joining of atomic nuclei

• Fusion

• chain reaction

• Photosynthesis

• Fission

_______is the splitting of atomic nuclei

• Fission

• nuclear reaction

• Fusion

• bayler reaction

How is the alpha particle written in a nuclear equation?

• ⁴₂He

• ²₄He

• ⁰_-1e

• ⁰₀γ

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

Gamma rays have

• no mass

• a huge mass

• a small mass

• an average mass

Has the symbol

• Alpha
• Beta 
• Gamma

Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.

• Alpha
• Beta
• Gamma

Has the lowest penetrating power.  Can only penetrate 0.05 mm into the body and can be stopped by the skin.

• Alpha
• Beta
• Gamma
• Electron capture

Uranium-238  decays into  Thorium-234  by emitting .........

• an alpha particle
• a beta particle
• gamma rays
• visible light

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons