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Nuclear Fission And Fusion
Test Description: Chapter 40 Hewitt Conceptual Physics
Instructions: Answer all questions to get your test result.
1) Nuclear fission occurs when
A
we cut nuclei in two with a very small cutting device
B
a nucleus divides spontaneously, with no apparent reason
C
one nucleus bumps into another cuasing a chain reaction
D
electrical forces inside a nucleus overpower nuclear forces
2) A benefit to using nuclear fission power is that it
A
conserves organic fules, likeoil, coal and wood
B
supplies a lot of electricity
C
eliminates huge quantities of sulfur oxides, which pollute our air
D
all of the above
3) Whan a neutron leaves a nucleus, its mass
A
stays the same
B
increases
C
tiples
D
decreases
4) A graph of nuclear mass per nucleon for all the elements
A
decrease; increasing
B
is an ever increasing graph
C
is a straight line
D
starts high, dips, then slowly increases.
5) The element with the least mass per nucleon is
A
helium
B
uranium
C
hydrogen
D
iron
6) The release of energy in nuclear fission is consistent with the fact that uranium has
A
less mass per nucleon than either of the two fragments
B
has exactly the same mass per nucleon as the two fragments
C
more mass per nucleon than either of the two fragments
D
has more mass per nucleon as the two fragments
7) The energy we get in nuclear reaction comes from
A
energy we put into the reactor
B
the sun
C
water
D
the mass of the fuel
8) Nuclear fusion releases energy when
A
very light nuclei fuse together
B
heavy ions fuse together
C
uranium splits into two fragments
D
uranium emits a neutron
9) Nuclear fusion occurs typically in
A
the sun
B
uranium mines
C
the upper atmosphere
D
all of the above
10) Teh primary fuel for a nuclear fusion reactor is
A
helium
B
uranium
C
plutonium
D
hydrogen
*select an answer for all questions
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