-
Compared to a neutron bouncing off a carbon nucleus, a neutron bouncing off a hydrogen nucleus loses...
more speed.
-
Which shape uses the smallest amount of material when creating a critical mass...
sphere.
-
Compared to the energy produced by fissioning a gram of uranium, the energy produced by fusing a gram of deuterium is....
more.
-
Reactions that take place in a breeder reactor change...
elements into different elements.
-
In which of these processes is an element of matter changed into a completly different element...
nuclear fission and fusion.
-
the most abundant element in the universe is...
hydrogen.
-
Present day research in nuclear fusion uses...
laser beams and ultra hot plasmas.
-
Energy released by the sun results from the process where in atomic nuclei...
combine.
-
Between nuclear fission and nuclear fusion, radioactive by products are more characteristic of nuclear...
fission.
-
When two light atoms fuse together, mass...
is converted to kinetic energy of neutrons.
-
A nucleon has the least mass in the nucleus of...
iron.
-
The nucleus with the greatest mass is...
plutonium.
-
A nucleon has more mass when it is...
outside the nuecleus.
-
When uranium 238 absorbs a neutron, it...
becomes a beta emitter.
-
The function of graphite in the first atomic reactor was to....
absorb fast neutrons.
-
Which will leak more neutrons, two separate lumps of uranium or the same two lumps stuck together?
two seperate lumps.
-
A chain reaction grows when the average number of liberated neutrons that go on to cause further fissions is...
greater than one.
-
compared to the mass of a uranium nucleus before splitting, the pieces it splits into have...
less mass.
-
Uranium 235, 238 and 239 are different...
isotopes.
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