Unit 3 - Carbon Cycle Semester Review

Front

What happens to the amount of carbon in the atmosphere if the plant population decreases?

Back

The amount of carbon in the atmosphere would increase.

Front

What are fossil fuels made from?

Back

Fossil fuels are made from plants and animals that are buried underground for millions of years.

Front

How many years does it take for once-living matter to transform into fossil fuels?

Back

It takes millions of years.

Front

Why does too much carbon dioxide in the atmosphere cause climate change?

Back

It traps heat and warms the planet.

Front

True or False: Carbon moves from fossil fuels to the atmosphere when the fuels are burned.

Back

True.

Front

Define the carbon cycle.

Back

The carbon cycle is the process by which carbon is exchanged between the atmosphere, land, water, and living organisms.

Front

What role do plants play in the carbon cycle?

Back

Plants absorb carbon dioxide from the atmosphere during photosynthesis.

Front

What is the impact of deforestation on the carbon cycle?

Back

Deforestation reduces the number of trees that can absorb carbon dioxide, leading to increased atmospheric carbon.

Front

Explain the term 'greenhouse gases'.

Back

Greenhouse gases are gases that trap heat in the atmosphere, contributing to the greenhouse effect.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of the Earth's surface due to the trapping of heat by greenhouse gases.