PhySci-Energy Sources

It is a common fossil fuel which is a homogeneous chemical mostly made up of carbon.

• Coal

• Natural gas

• Biogas

How many percent of carbon content does the coal varies?

• 70% to 80 %

• 75% to 95%

• 60% to 75%

• 75% to 85%

It is a gas produced after organic materials (plant and animal products) are broken down by bacteria in an oxygen- free environment.

• Biomass

• Biogas

• Natural gas

• Fuel

This energy is harnessed from the molten rocks near volcanic regions.

• Solar energy

• Geothermal energy

• Hydrothermal energy

• Volcanic energy

It refers to the heat obtained from hot water from hydrothermal vents or seawater in contact with hot rock beds.

• Wind energy

• Geothermal energy

• Water energy

• Hydrothermal energy

Energy resources derived from natural organic materials are called ________

• Biomass

• Batteries

• Solar cells

• all of these

Which of the following problems is associated with the burning of coal?

• acid rain

• carbon dioxide emissions

• ash with toxic metal impurities

• all of these

Which is an advantage of installing solar panels?

• Reduced amount of air pollution

• Number of cloudy days

• High cost to install

• Use of nonrenewable resources

Fossil fuels are classified as nonrenewable because they____

• require expensive equipment

• can be found all over

• take millions of years to replace

• provide all the energy we use

Which of the following sources are present in limited amounts, so they will be depleted over time.

• recyclable resources

• renewable resources

• nonrenewable resources

• nonrecyclable resources