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renewable energy

Definition

Renewable means that something can be replaced or renewed. In the context of energy, renewable energy comes from sources that are naturally replenished, such as sunlight, wind, water, and geothermal heat.

Renewable energy is important because it is a clean and sustainable source of energy. It does not produce greenhouse gases, which contribute to climate change. Renewable energy is also a domestic source of energy, which means that we do not have to rely on imports from other countries.

Here are some examples of renewable energy sources:

  • Solar energy comes from the sun. We can use solar panels to convert sunlight into electricity.
  • Wind energy comes from the wind. We can use wind turbines to convert wind energy into electricity.
  • Hydropower comes from flowing water. We can use dams to store water and then use the water to generate electricity.

Geothermal energy comes from the heat of the Earth. We can use geothermal heat to generate electricity or to heat homes and buildings.

How can the word be used?

Renewable energy is a key part of the solution to climate change.

renewable energy

Different forms of the word

Noun:

  • energy that is derived from sources that are naturally replenished, such as solar, wind, and hydroelectric power.
  • The word "renewable energy" is a compound word, made up of the words "renewable" and "energy".

Adjective:

  • of or relating to renewable energy.

Etymology

The word "renewable" comes from the Latin word "renovare", which means "to make new".

The word "energy" comes from the Greek word "energeia", which means "activity".

The first recorded use of the word "renewable energy" was in the 1970s.

Question

What types of renewable energy are there?