2-6 Carbon Cycle Practice Test

Front

What is the carbon cycle?

Back

The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, water, and living organisms. It involves processes like photosynthesis, respiration, decomposition, and combustion.

Front

What role do plants play in the carbon cycle?

Back

Plants absorb carbon dioxide from the atmosphere during photosynthesis and release oxygen. They pull in more carbon than they release, helping to regulate atmospheric carbon levels.

Front

What is the significance of the biosphere in the carbon cycle?

Back

The biosphere includes all living organisms on Earth, which play a crucial role in the carbon cycle by absorbing and releasing carbon through various biological processes.

Front

How do humans impact the carbon cycle?

Back

Humans impact the carbon cycle by burning fossil fuels, deforestation, and industrial activities, which add more carbon to the atmosphere and speed up the rate of carbon movement.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen, playing a key role in the carbon cycle.

Front

What is respiration in the context of the carbon cycle?

Back

Respiration is the process by which living organisms convert glucose and oxygen into energy, releasing carbon dioxide back into the atmosphere.

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient plants and animals, which release carbon dioxide when burned, contributing to the carbon cycle.

Front

What is the role of decomposition in the carbon cycle?

Back

Decomposition is the process by which dead organic matter is broken down by microorganisms, releasing carbon back into the soil and atmosphere.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of Earth's surface due to the trapping of heat by greenhouse gases like carbon dioxide, which are increased by human activities.

Front

What is conservation of matter?

Back

Conservation of matter is a principle stating that matter cannot be created or destroyed, only transformed. In the carbon cycle, the total amount of carbon remains constant.