APES Unit 6 Review

Front

What type of energy does a power plant that produces electricity using geothermal energy utilize?

Back

Geothermal energy utilizes heat from the Earth's interior to generate electricity.

Front

What are the main pollutant and greenhouse gas emissions associated with natural gas?

Back

Natural gas emissions include Methane (CH4), Hydrocarbons, and Hydrogen sulfide.

Front

In most power plants, what is the primary use of heat energy?

Back

The heat energy is used to create steam which turns turbines.

Front

What are some advantages of using natural gas as an energy source?

Back

Advantages include high efficiency (up to 60% in cogeneration), suitability for cooking and heating, and fewer impurities compared to coal or oil.

Front

What are some disadvantages of using natural gas?

Back

Disadvantages include the risk of leaks/explosions, being 25 times more effective as a greenhouse gas than CO2, and low availability due to the need for pipelines.

Front

Define geothermal energy.

Back

Geothermal energy is the heat that comes from the sub-surface of the earth, which can be found as far down to hot molten rock, or magma.

Front

What is cogeneration in the context of energy production?

Back

Cogeneration is the simultaneous production of electricity and useful heat from the same energy source.

Front

How does natural gas compare to coal in terms of greenhouse gas emissions?

Back

Natural gas emits significantly lower greenhouse gases compared to coal, making it a cleaner energy source.

Front

What is the role of turbines in power plants?

Back

Turbines convert the energy from steam (or other sources) into mechanical energy, which is then converted into electrical energy.

Front

What is the environmental impact of methane as a greenhouse gas?

Back

Methane is a potent greenhouse gas, with a warming potential 25 times greater than CO2 over a 100-year period.