Answers S1S Chemistry B E4912 - AGNuclear Energy

Nuclear Energy Answers

0 verified answers

Free Preview

The image shows a process that releases nuclear energy.

The process must be fusion because energy is released.

The process must be fusion because a heavier nucleus forms from smaller nuclei.

The process must be fission because a large nucleus breaks into smaller nuclei.

The process must be fission because neutrons are formed.

Free Preview

Why are very high temperatures and pressures required for fusion to occur?

to generate the neutrons that are needed to break the nuclei

to overcome the repulsion between the protons in the nuclei that join

to maintain the proper conditions to keep the chain reaction going

to keep the uranium fuel separate from the control rods

Improvements in which area would help reduce the possibility of damage to the environment when using uranium as a fuel?

more-efficient extraction techniques

better control of fusion reactions

stronger-pumping wells

thicker shielding around the reactor

During a heat wave, there is an increased demand for electricity to operate air conditioners. The basic design of a nuclear reactor that generates electricity is shown below.

lower the control rods, which will absorb more neutrons before they can split atoms

raise the control rods so that fewer neutrons are absorbed and more can split uranium atoms

remove some of the fuel rods, which will leave more room for additional neutrons to split atoms

add additional fuel rods to generate additional neutrons to split uranium atoms

What is Albert Einstein’s contribution to the understanding of nuclear energy?

He proposed that matter can be converted to energy and vice versa.

He first discovered that nuclear-reaction products are lighter than the reactants.

He developed the use of nuclear reactions to generate electricity.

He demonstrated that a uranium nucleus splits and releases neutrons.

During early research in nuclear energy, why were scientists surprised that the products from splitting a uranium nucleus had less mass than the reactants?

They expected that the large release of energy would cause an increase in mass.

Up to that time, only chemical changes were known to form less mass than they started with.

All known changes always started and ended with the same amount of mass.

Other known nuclear changes resulted in the same mass of products as reactants.

Which element is the primary fuel used to generate electricity using nuclear energy?

coal

hydrogen

uranium

helium

How do fission nuclear reactions differ from fusion nuclear reactions?

Fission reactions involve the conversion of matter into energy, but fusion reactions do not.

Fusion reactions involve the conversion of matter into energy, but fission reactions do not.

Fission reactions are used to generate electricity for consumers, but fusion reactions are not.

Fusion reactions are used to generate electricity for consumers, but fission reactions are not.

In which situation is nuclear power most beneficial?

if there is a low concentration of people

if there is a nearby supply of fossil fuels

if there is an isolated location

if there are many other energy resources

What is the correct order of energy conversions associated with a power plant that uses nuclear fission reactions?

thermal to nuclear to mechanical to electrical

thermal to mechanical to nuclear to electrical

nuclear to mechanical to electrical to thermal

nuclear to thermal to mechanical to electrical

Did you find these answers helpful?

Nuclear Energy Answers

More from this Course

TRY EDGENUITY HACKS