What role does water play in a nuclear power plant? Select all that apply. The metal rods holding the nuclear fuel pellets are stored in a pool of water, which absorbs the neutrons produced and controls the rate of the nuclear reactions.
Water chemically reacts with uranium, which causes uranium to emit neutrons and produce a chain reaction.
Liquid water absorbs some of the heat of the reaction, which helps to control the reactions.
Liquid water is boiled to steam, which is pressurized and turns the turbine to produce electricity.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

The answer is celsius