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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
supplies a lot of electricity
B
eliminates huge quantities of sulfur oxides, which pollute our air
C
all of the above
D
conserves organic fules, likeoil, coal and wood
3) Whan a neutron leaves a nucleus, its mass
A
increases
B
stays the same
C
decreases
D
tiples
4) A graph of nuclear mass per nucleon for all the elements
A
starts high, dips, then slowly increases.
B
decrease; increasing
C
is an ever increasing graph
D
is a straight line
5) The element with the least mass per nucleon is
A
helium
B
iron
C
uranium
D
hydrogen
6) The release of energy in nuclear fission is consistent with the fact that uranium has
A
has exactly the same mass per nucleon as the two fragments
B
less mass per nucleon than either of the two fragments
C
has more mass per nucleon as the two fragments
D
more mass per nucleon than either of the two fragments
7) The energy we get in nuclear reaction comes from
A
the mass of the fuel
B
energy we put into the reactor
C
water
D
the sun
8) Nuclear fusion releases energy when
A
heavy ions fuse together
B
uranium splits into two fragments
C
uranium emits a neutron
D
very light nuclei fuse together
9) Nuclear fusion occurs typically in
A
the upper atmosphere
B
the sun
C
uranium mines
D
all of the above
10) Teh primary fuel for a nuclear fusion reactor is
A
uranium
B
plutonium
C
helium
D
hydrogen
*select an answer for all questions
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