Fuels

Fossil fuels, including coal, oil, and gas, originate from ancient plants and marine life. These fuels were formed over millions of years through compression under layers of earth. The energy in fossil fuels originally comes from the sun, captured by plants through photosynthesis. Today, burning fossil fuels releases this stored energy, which is a primary source of electricity.

What are fossil fuels primarily made from?

• Minerals and rocks

• Ancient plants and animals

• Water and air

• Modern plants and animals

How are oil and gas formed?

• From atmospheric gases

• From marine organisms at the ocean floor

• From volcanic eruptions

• From ancient trees on land

Where does the energy in fossil fuels originally come from?

• Volcanic activity

• The sun

• The moon

• The Earth's core

What process transforms the energy from the sun into energy stored in plants?

• Evaporation

• Photosynthesis

• Combustion

• Condensation

What happens when fossil fuels are burned?

• They create new fossil fuels

• They turn into water

• They release stored energy

• They absorb sunlight