1 Carbon cycle

Which of the following can carbon be found in? (pick 4)

• sedimentary rocks

• You

• snow fall

• natural gas

• oceans

Which are organic carbons? (pick 3)

• Trees

• Coal

• dead leaves (litter)

• CO2

• Peat

How is carbon transferred from the lithosphere to the atmosphere? (pick 3)

• Through photosynthesis

• From volcanoes

• through burning fossil fuels

• cement manufacturing

• dissolving

How much is a gigatonne of carbon (GtC)

• 100 tonnes

• 1 million tonnes

• 1 billion tonnes

• 1 trillion tonnes

Which is a source of anthropogenic (caused by humans) carbon dioxide release?

• combustion of fossil fuels

• carbon dioxide released from volcanoes

• carbon dioxide diffused from oceans

• plant respiration

Which is the biosphere?

• The crust and uppermost mantle (the hard and rigid outer layer of the earth)

• The air around us

• All living matter (plants and animals)

• All water at or near the earth's surface held as solid ice, liquid or water vapour

Which is a carbon sink?

• A store of carbon that releases more carbon than it absorbs

• A store of carbon that absorbs more carbon that it releases

What is weathering?

• The wearing away of rocks by water, ice, wind or waves

• The break down of rocks in situ by a combination of weather, plants and animals

• The process of depositing sediments

• The process of moving sediments

What is the soil forming part of the earth called?

• Cryosphere

• Pedosphere

• Atmosphere

• Biosphere

Which is the largest carbon store?

• Lithosphere (rocks)

• Pedosphere (soils)

• Atmosphere

• Oceans