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23 Nov 2019
What is the function of the moderator in a fission reactor?
(a) The moderator absorbs gamma rays. (b) The moderator absorbsslow neutrons.
(c) The moderator decreases the speeds of fast neutrons.
(d) The moderator prevents heat loss from the reactor core.
(e) The moderator prevents the reactor from reaching a criticalstate.
What is the function of the moderator in a fission reactor?
(a) The moderator absorbs gamma rays. (b) The moderator absorbsslow neutrons.
(c) The moderator decreases the speeds of fast neutrons.
(d) The moderator prevents heat loss from the reactor core.
(e) The moderator prevents the reactor from reaching a criticalstate.
Irving HeathcoteLv2
1 Aug 2019
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Match each property with the benefit it provides to people on Earth.
| A. magnetic field | 1 filters cancer-causing rays from the sun |
| B. ozone | 2 retains heat energy from the sun in the atmosphere |
| C. carbon dioxide | 3 prevents charged particles from the sun from reaching the surface |
| D. water in oceans, lakes, rivers, and streams | 4 moderates changes in temperature on the surface |
