What are the three categories of energy resources based on their environmental impact?
- Renewable
- Nonrenewable
- Inexhaustible
These categories help classify energy sources based on their sustainability and environmental effects.
What is a nonrenewable resource?
A natural resource that cannot be re-made or re-grown at a scale comparable to its consumption
Nonrenewable resources cannot be replaced as quickly as they are used.
Name the types of nonrenewable energy resources.
- Coal
- Oil
- Natural gas
- Nuclear
These resources are finite and contribute to environmental pollution.
What percentage of the world’s energy use is made up by fossil fuels?
85%
Fossil fuels dominate global energy consumption.
What are the three main fossil fuels?
- Coal
- Petroleum (oil)
- Natural gas
These fossil fuels are derived from the remains of ancient organisms.
True or false: Natural gas is the cleanest burning fossil fuel.
TRUE
Natural gas burns cleaner than coal and oil, producing fewer pollutants.
What is the primary use of coal in the United States?
To produce electricity
About 90% of coal consumed in the U.S. is burned by power plants.
What is nuclear energy derived from?
The fission process of atoms
Nuclear energy produces large amounts of energy but also radioactive waste.
What is a renewable resource?
An energy source that is replaced by natural processes faster than humans can consume it
Renewable resources can be replenished in a short period of time.
Name some examples of renewable energy resources.
- Solar
- Wind
- Biomass
- Hydroelectric
- Geothermal
- Tidal Wave
These resources are sustainable and have less environmental impact.
What is hydropower?
Energy from the flow of water
Hydropower is one of the most widely used renewable resources.
What is the main advantage of wind energy?
No pollution
Wind energy is a clean source of electricity generation.
What is biomass?
Organic matter that can be burned or converted into fuel
Biomass includes materials like wood, agricultural waste, and urban waste.
What is geothermal energy?
Energy from the Earth’s heat
Geothermal energy can be harnessed for electricity generation and heating.
What is the greenhouse effect?
The warming of Earth’s surface due to greenhouse gases trapping heat
This effect is exacerbated by the burning of fossil fuels.
What is the cost of fossil fuels in terms of environmental impact?
Pollution and greenhouse gas emissions
Fossil fuels contribute significantly to climate change.
What is energy conservation?
The practice of using less energy
Examples include turning off lights and using energy-efficient appliances.
What is hydrogen fuel?
A clean energy source that produces electricity, heat, and water when combined with oxygen
Hydrogen fuel cells are a potential alternative energy source.
What is an inexhaustible resource?
A resource that will never run out
Examples include solar and wind energy.
What is the current inefficiency of using hydrogen as a fuel?
Takes more energy to burn the hydrogen than it will produce when it’s burned
This highlights the challenges in hydrogen fuel technology.
What does a fuel cell combine to produce electricity?
- Hydrogen
- Oxygen
Fuel cells produce electricity, heat, and water through a chemical reaction.
How are fuel cells often compared?
To batteries
Both convert energy produced by a chemical reaction into usable electric power.
Why are hydrogen and other resources considered renewable?
They will never run out and do not produce waste that can hurt the Earth
However, they can be expensive to use.
What kind of energy do the pictures represent: oil drilling?
Petroleum/oil
This represents traditional fossil fuel extraction.
