Fission and Fusion

The splitting of a larger nucleus into smaller nuclei and free neutrons is:

• fusion

• fission

• radioactive decay

This process involves combining two smaller nuclei into one larger nucleus.

• fission

• fusion

• radioactive decay

Where does FUSION occur naturally?

• Only in uranium atoms

• Inside all radioactive elements

• In stable atoms

• On the sun

Which atoms combine together during fusion reaction on the sun?

• Helium and Hydrogen atoms

• Hydrogen atoms

• Hydrogen and Lithium atoms

• Hydrogen and Carbon atoms

Very high temperatures and pressures are required for ____ reactions to occur.

• Fission

• Fusion

• Radioactive Decay

Nuclear fusion releases energy when:

• heavy ions fuse together
• very light nuclei fuse together
• uranium splits into two fragments
• uranium emits a neutron

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-1

Which of the following processes is described by this model?

• Fission

• Fusion

• Alpha Decay

• Beta Decay

_________ happens NATURALLY ON EARTH due to an unstable nucleus. Humans can't start or stop this.

• fission

• fusion

• radioactive decay

• silver mining

Which of these statements correctly describes how the chain reaction occurs in nuclear fission?

• When one nucleus splits, it releases ALPHA PARTICLES which then strike other nuclei in the sample causing them to split

• When one nucleus splits, it releases ELECTRONS which then strike other nuclei in the sample causing them to split

• When one nucleus splits, it releases NEUTRONS which then strike other nuclei in the sample causing them to split

• When one nucleus splits, it releases GAMMA RADIATION which is absorbed by other nuclei in the sample causing them to split.

___________ starts the fission of a uranium atom.

• Energy

• Protons

• One Neutron

• All of the above

Tags

NGSS.HS-PS1-8