Unit 23

Front

What is a possible risk of using hydroelectricity?

Back

Ecosystem damage and loss of land.

Front

Organic compounds made only of the elements carbon and hydrogen are called...

Back

Hydrocarbons.

Front

The wise use of natural resources (reducing energy use) is called:

Back

Conservation.

Front

What is a problem with using wind turbines to produce energy?

Back

They are only effective in certain areas.

Front

Electrons are located in the:

Back

Electron cloud.

Front

What is the primary source of energy for wind turbines?

Back

Wind.

Front

Define biomass in the context of energy production.

Back

Biomass refers to organic material that comes from plants and animals, used as a renewable energy source.

Front

What is the main environmental concern associated with fossil fuels?

Back

Air pollution and greenhouse gas emissions.

Front

What is the process of converting sunlight into energy called?

Back

Photosynthesis.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up the reaction without being consumed.