These are sources that cannot be replaced quickly (they take millions of years to form):

• Fossil Fuels:

  • Coal

  • Oil (Petroleum)

  • Natural Gas
    → Widely used for electricity, heating, transportation, but cause pollution and climate change.

• Nuclear Energy

  • Comes from splitting uranium atoms (fission).

  • Produces a lot of energy with low emissions, but creates radioactive waste and has safety concerns.

2. Renewable Energy Sources

These are naturally replenished and more environmentally friendly:

• Solar Energy

  • Captured using solar panels.

  • Clean and abundant, but depends on weather and time of day.

• Wind Energy

  • Generated with wind turbines.

  • Clean, but only works well in windy areas.

• Hydropower

  • Uses moving water (rivers or dams) to generate electricity.

  • Very efficient, but can impact ecosystems.

• Biomass

  • Comes from organic materials like plants, wood, or animal waste.

  • Renewable but can cause emissions if burned.

• Geothermal Energy

  • Uses heat from inside the Earth.

  • Reliable but only available in certain locations.

Why learn about energy sources?

• To understand how electricity is made.

• To make smart choices for the environment.

• To plan for a sustainable future .