Physical Science: Nuclear Reactions Test

What makes something radioactive?

• elements with an atomic number above 81
• an unstable nucleus
• contaminated sewage
• It decays over time

Takes two small nuclei and combines them into a larger nucleus

• fission
• fusion

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

How is nuclear fusion different from nuclear fission?

• In fusion, the product is a larger atomic nucleus.
• Fission produces energy but fusion does not.
• Fusion produces energy but fission does not.
• In fission, the product is a larger atomic nucleus.

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

Which type of nuclear radiation is being emitted here?

• alpha
• beta
• gamma
• none

What particle completes this reaction?

• alpha particle
• beta particle
• gamma particle
• neutron

Which of the following statements BEST describes nuclear fusion?

• Nuclear fusion is a common source of energy
• Nuclear fusion usually requires freezing temperatures
• Nuclear fusion usually requires a high-temperature environment
• Nuclear fusion releases a small amount of energy compared to most chemical reactions

Which force holds protons and neutrons together in the atom nucleus?

• electric force

• gravity

• strong nuclear force

• weak nuclear force

During nuclear fission, a nucleus _________.

• grows

• divides

• shrinks

• combines with another