Why is critical mass important for a fission chain reaction? (1 point)
*
1 point
It keeps neutrons from escaping the sample.
It keeps neutrons from being absorbed by other isotopes.
It allows neutrons to be absorbed by other fissionable nuclei.
It provides enough fuel to make enough energy.
16) Why is a moderator important for a fission chain reaction? (1 point)
*
1 point
It keeps neutrons from escaping the sample.
It keeps neutrons from being absorbed by other isotopes.
It allows neutrons to be absorbed by other fissionable nuclei.
It provides enough fuel to make enough energy.
17) Why is enrichment important for a fission chain reaction? (1 point)
*
1 point
It keeps neutrons from escaping the sample.
It keeps neutrons from being absorbed by other isotopes.
It allows neutrons to be absorbed by other fissionable nuclei.
It provides enough fuel to make enough energy.
Reaction 1
18) For incomplete Reaction 1 (above), the mass of the missing product should be... (2 points)
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2 points
-1
0
1
10
19) For incomplete Reaction 1 (above), the charge of the missing product should be... (2 points)
*
2 points
-1
0
1
10
20) For incomplete Reaction 1 (above), the missing particle is called... (2 points)
*
2 points
an alpha particle
a beta particle
a gamma emission
a neutron
21) For incomplete Reaction 1 (above) to occur which of the following occurred?
*
1 point
A neutron in the carbon nucleus split into a proton and an electron that was released.
An electron was released from orbit around the carbon atom's nucleus.
Energy from the carbon atom's nucleus became an electron.
An electron was absorbed by the carbon atom's nucleus.