Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?

• Alpha deca

• Gamma Decay

• Beta decay

• They are all blocked using the same method

Which of these processes describes a nuclear fusion reaction?

• A nucleus absorbs energy to produce lighter nuclei.

• A nucleus splits to produce energy and lighter nuclei

• Two nuclei bind together to produce energy and heavier nuclei.

• Two nuclei bind together to produce energy and a lighter nuclei.

TRUE or FALSE: gamma changes the atomic number.

• True
• False

What is emitted during Alpha Radiation?

• A helium nuclei.
• A helium atom
• Gamma Rays.
• Positrons

What is emitted during Beta Radiation?

• A high-energy Electron.
• Protons.
• Neutrons.
• Nuclei

What is radioactive decay?

• The spontaneous breakdown of an atomic nucleus resulting in only energy release
• The spontaneous breakdown of an atomic nucleus resulting in only matter release
• The spontaneous breakdown of an atomic nucleus resulting in a release of energy and matter
• The decay of the use of radios and the increased use of televisions.

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

When does radioactive decay occur?

• When the nucleus of an isotope is unstable
• When the nucleus of an isotope is stable
• When the electrons of an isotope are spinning
• When the electrons of an isotope are shared with another isotope

This is an example of...

• Fission  reaction
• Fusion reaction
• Decomposition reaction
• Decay

How many protons does gold atom have?

• 197
• 79
• 118
• 276