9GE01 - Energy 1.2 - Geological Rock Cycle

What is the primary form in which carbon is stored in the Earth's geological cycle?

• In the atmosphere as carbon dioxide

• As biologically derived carbon in forests

• In terrestrial stores as part of the long term geological cycle

• In aquatic animals and plants

Which type of rocks primarily result from the formation of sedimentary carbonate rocks?

• Igneous rocks

• Metamorphic rocks

• Limestone

• Basalt

What is a significant source of biologically derived carbon?

• Volcanic emissions

• Shale, coal, and other rocks

• Oceanic vents

• Atmospheric particles

What type of carbon store is described as "Sedimentary rocks, very slow cycling over millennia"?

• Oceanic (deep)

• Crustal/terrestrial geological

• Terrestrial soil

• Atmospheric

Which carbon store has the characteristic of "Most carbon is dissolved inorganic carbon stored at great depths, very slowly cycled"?

• Oceanic (deep)

• Terrestrial ecosystems

• Oceanic (surface)

• Atmospheric

How long can carbon be stored in fossil fuels?

• Hundreds of years

• Thousands of years

• Hundreds of thousands of years

• Millions of years

Which carbon store involves micro-organisms breaking down organic matter to CO₂?

• Terrestrial soil

• Oceanic (surface)

• Oceanic (deep)

• Atmospheric

What is the average PgC stored in the atmospheric carbon store?

• 560

• 1,000

• 1,500

• 38,000

What is the approximate amount of carbon stored in the permafrost according to the diagram?

• 1,700 PgC

• 550 PgC

• 1,950 PgC

• 3 PgC

How much carbon is released annually from fossil fuel use and cement production?

• 0.1 PgC/yr

• 7.8 PgC/yr

• 1.0 PgC/yr

• 78.4 PgC/yr