Carbon Cycle Flashcards
(24 cards)
What is the carbon cycle?
The carbon cycle is the process by which carbon is exchanged between the Earth’s atmosphere, land, oceans, and living organisms.
True or False: Carbon is only found in living organisms.
False.
Fill in the blank: The carbon cycle involves processes such as __________, respiration, and decomposition.
photosynthesis
What process do plants use to absorb carbon dioxide from the atmosphere?
Photosynthesis.
What is the role of decomposers in the carbon cycle?
Decomposers break down dead organic matter, releasing carbon back into the soil and atmosphere.
Multiple Choice: Which of the following is a major reservoir of carbon? A) Atmosphere B) Oceans C) Soil D) All of the above
D) All of the above.
What gas do animals exhale that contributes to the carbon cycle?
Carbon dioxide.
True or False: Burning fossil fuels releases carbon into the atmosphere.
True.
Fill in the blank: Carbon is stored in the form of __________ in fossil fuels.
hydrocarbons
What is the importance of the carbon cycle to Earth’s climate?
It helps regulate the Earth’s temperature and climate by controlling the levels of carbon dioxide in the atmosphere.
What process converts carbon dioxide into organic compounds in plants?
Photosynthesis.
Multiple Choice: Which of the following processes releases carbon dioxide back into the atmosphere? A) Photosynthesis B) Respiration C) Nitrogen fixation D) Evaporation
B) Respiration.
What is the impact of deforestation on the carbon cycle?
Deforestation reduces the number of trees that can absorb carbon dioxide, leading to increased carbon in the atmosphere.
True or False: Ocean water absorbs carbon dioxide from the atmosphere.
True.
Fill in the blank: The __________ is a major carbon sink that helps regulate atmospheric carbon levels.
ocean
What happens to carbon when organisms die?
Carbon is released back into the soil and atmosphere through decomposition.
Multiple Choice: Which of the following is a human activity that affects the carbon cycle? A) Agriculture B) Industrialization C) Deforestation D) All of the above
D) All of the above.
What are fossil fuels primarily made of?
Carbon-based hydrocarbons.
True or False: The carbon cycle is a closed-loop system.
True.
Fill in the blank: Carbon can be stored in __________, which are underground reservoirs of carbon.
fossil fuels
What role do phytoplankton play in the carbon cycle?
Phytoplankton perform photosynthesis, absorbing carbon dioxide and producing oxygen in the oceans.
What is meant by ‘carbon footprint’?
A carbon footprint is the total amount of greenhouse gases, including carbon dioxide, that are emitted by an individual or organization.
Multiple Choice: Which of the following is a natural process that removes carbon from the atmosphere? A) Photosynthesis B) Combustion C) Respiration D) All of the above
A) Photosynthesis.
True or False: The carbon cycle can be affected by climate change.
True.
