Front

What is biofuel?

Back

Biofuel is a type of fuel made from organic materials, such as plants and animal waste.

Front

What is fossil fuel?

Back

Fossil fuel is a type of fuel formed from ancient plant and animal remains, such as coal, oil, and natural gas.

Front

What is the main difference between biofuel and fossil fuel?

Back

Biofuel is made from organic materials, while fossil fuel is formed from ancient plant material.

Front

What is an aquifer?

Back

An aquifer is an underground layer of rock or sediment that holds water.

Front

What is the environment?

Back

The environment is the surroundings in which an organism lives, including air, water, and land.

Front

What causes an earthquake?

Back

An earthquake is primarily caused by the movement of tectonic plates.

Front

What is a delta?

Back

A delta is a landform at the mouth of a river created by the deposition of sediment.

Front

What is sediment?

Back

Sediment is small particles of rock, soil, and organic material that are carried and deposited by water, wind, or ice.

Front

What are tectonic plates?

Back

Tectonic plates are large pieces of the Earth's crust that move and interact with each other.

Front

What is deposition?

Back

Deposition is the process by which sediment is laid down in a new location.