Power Generation (Fossil Fuel, Nuclear and Hydro)

When moving neutrons hit the nuclei of certain other atoms thereby causing them to change, and this happens repeatedly, it is said to be a _______________________.

• nuclear chain reaction

• alpha radiation

• nuclear half-life

• control rod

At a nuclear or fossil fuel power plants, these are referred to as __________________.

• cooling towers

• reactor towers

• smoke stacks

• vapor chambers

The process of generating nuclear power is called ___

• nuclear alpha decay

• nuclear fusion

• nuclear fission

• nuclear fuel enrichment

What is the function of a turbine?

• When it spins, it makes sparks, inducting electricity.

• It transfers the energy from the flow of steam or water to the generator.

• It speeds up the steam or water to keep it at a steady pace.

• It controls the steam or water so it can be pumped around in a cycle.

What does a generator in hydroelectricity do?

• It spins when the water passes through it.

• It moves the water from a higher elevation to a lower elevation.

• It helps the movement of fish to pass safely through the dam.

• It electromagnetically induces electricity.

The efficiency of coal fired power plants is typically

• 10 - 20%

• 30 - 40%

• 50 - 60%

• 70 - 80%

The location of the largest amount of degraded energy in a fossil fuel or nuclear power plant is

• in the heat exchanger

• in the turbines

• in the generator

• in the condenser

The moderator in a nuclear reactor

• slows neutrons down.

• speeds neutrons up.

• captures neutrons.

• enriches the uranium.

Enriching uranium beyond 80% is done in order to . . .

• have controlled chain reactions.

• have uncontrolled chain reaction.

• produce slow neutrons.

• produce fast neutrons.

Controlled chain reactions in a nuclear reactor is achieved using . . .

• a moderator.

• control rods.

• fuel pellets.

• heat exchanger.