Rocks are weathered by carbonation. This occurs when...

CO2 in the air mixes with rainwater to create carbonic acid which weathers limestone.

O2 in the air mixes with rainwater to create carbonic acid which weathers limestone.

Sulphur in the air mixes with rainwater to create carbonic acid which weathers limestone.

A carbon sink is a store of carbon where...

INPUTS of carbon are greater than OUTPUTS

OUTPUTS of carbon are greater than INPUTS.

Carbon sequestration is occurring.

A tipping point has been reached.

Key processes in the FAST carbon cycle are...

Photosynthesis, respiration, digestion, decomposition, combustion.

Photosynthesis, respiration, digestion, decomposition, weathering, combustion.

Photosynthesis, respiration, digestion, decomposition, tectonic processes.

Photosynthesis, respiration, digestion, sediment transfers.

Key processes in the SLOW carbon cycle include...

weathering, sediment transfers, tectonic processes, volcanic processes

weathering, sediment transfers, ocean-atmosphere exchange, volcanic processes

weathering, decomposition, tectonic processes, volcanic processes

weathering, photosynthesis, tectonic processes, volcanic processes

Biological activity in the upper ocean sequesters CO2 from the atmosphere by...

phytoplankton photosynthesising

Carbon sequestration means the...

transfer of carbon from the atmosphere to another store

transfer of carbon from plants to soil

subduction of rocks into the mantle

A possible cause of the regular fluctuation between warm and cold periods in global climate over the last 2.6million years is...

changes to the Earth's orbit (Milankovitch Cycles)

changes to the thermohaline circulation

Natural processes that can change the carbon cycle include...

wildfires, volcanic eruptions, tectonic uplift of mountains, natural climate change

wildfires, volcanic eruptions, tectonic uplift of mountains, fossil fuel burning

wildfires, land use change, rice cultivation, deforestation

Which sentence summarises a positive feedback between the carbon cycle and climate change?

Increased concentrations of atmospheric CO2 leads to global temperature rise, warming of oceans which absorb less CO2. Atmospheric CO2 concentrations continue to increase.

Enhanced greenhouse gas concentrations cause global temperatures to rise, increasing productivity rates in tropical rainforests. This increases rates of sequestration of CO2, as more carbon is stored in vegetation.

Oceans warm as global temperatures rise. Warms ocveans absorb more CO2 from the atmosphere, reducing the concentration of atmospheric CO2.

Warmer, longer summers in the Arctic lead to increased summer melting of sea ice. Ice free ocean absorbs less solar raidation increasing atmospheric warming.

To what does the carbon budget refer?

The balance of exchanges between the four major stores of carbon.

The amount of carbon in the atmosphere at any one time.

The measurement of the quantity of transferred carbon between land and ocean.

The total quantity of the major stores of carbon.

positive feedback in the carbon cycle

negative feedback in the carbon cycle

positive feedback in the water cycle

negative feedback in the water cycle

negative feedback in the carbon cycle

positive feedback in the carbon cycle

positive feedback in the water cycle

negative feedback in the water cycle

A national mitigation strategy designed to influence the carbon cycle and reduce climate change is...

afforestation and restoring degraded forests

What was the main agreement in the Paris climate treaty?

To limit greenhouse gas emissions so that the average global atmospheric temperature does not go above 2C above pre-industrial levels and try to limit warming to 1.5C.

To limit greenhouse gas emissions so that the average global atmospheric temperature does not go above 3C above pre-industrial levels and try to limit warming to 2C.

To limit greenhouse gas emissions so that the average global atmospheric temperature does not go above 1.5C above pre-industrial levels and try to limit warming to 1C.

To limit greenhouse gas emissions so that the average global atmospheric temperature does not go above pre-industrial levels and try to limit warming to 2C.

BECCS is an important mitigation strategy. It stands for...

Bioenergy carbon capture and storage

British energy carbon capture and storage

Biomass energy carbon capture and storage

Biological emissions captured and sequestered

Carbon farming is where farmers try to store more carbon in the soil ... methods include...

wetland restoration, planting trees and cover crops and mob grazing cattle.

covering bare paddocks with hay, removing trees, restoring degraded land

Increase use of nitrogen fertilisers to improve yields

Remove peat bogs from land, drain wetlands.

Carbon Cycle

Quiz

•

Geography

•

4th Grade - University

•

Practice Problem

•

Medium

S Collins

Used 5+ times

FREE Resource

sequestration

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which process transfers carbon from the atmosphere to the hydrosphere and biosphere?

weathering

respiration

decomposition

combustion

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Carbon Cycle

37 questions

Which carbon store contains 38,000 billion metric tons?

Which carbon store contains 100,000 billion metric tons?

Which carbon store contains 1500 billion metric tons?

Which carbon store contains 750 billion metric tons?

Photosynthesis word equation is...

Which process transfers carbon from living, dead or decomposed biomass to the atmosphere?

Which process transfers carbon from the atmosphere to the hydrosphere and biosphere?

Decomposition returns CO2 to the atmosphere and also adds carbon to soil stores.

Rocks are weathered by carbonation. This occurs when...

A carbon sink is a store of carbon where...

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