1. The Carbon Cycle

2. Calculating Density What is density? Mass / Volume
DEGREE OF COMPACTNESS
Mass / Volume
Mass- amount of matter in an object
Volume- amount of space an object takes up
Matter- substance that occupies space and has mass (3 forms- solid, liquid, gas)

3. First some Vocab
Carbon pool- place where carbon can be found (such as plants, atmosphere, or soil)
Carbon flux- process by which carbon moves from one pool to another
Example: C moves from the atmosphere to plants through photosynthesis

4. Carbon sink- when a carbon pool absorbs more than it releases
Example: ocean, soil, and sometimes forests
Carbon source- carbon pool releases more than it absorb
Example: fossil fuels because they cannot be replenished as fast as we use them

5. Organic Matter- materials composed of remains of organisms such as plants and animals
Example: soil
Carbon sequestration- process by which carbon dioxide is removed from the atmosphere and stored, usually in plants

6. Video to explain CYCLES!

7. Biological Carbon Cycle
Carbon moves through living organisms, land, water, and atmosphere.
Plants take in CO2 from atmosphere
Animals take in Carbon by eating
Carbon returned to atmosphere by decomposing and exhaling
Carbon atoms can cycle through pools daily or take hundreds to thousands of years.

9. Geological Carbon Cycle
Occurs over millions of years
Includes rock formation, plate tectonics, weathering, fossilization, volcanic eruptions
Fossil fuels are a long-term carbon sink until used by humans
Limestone-formed in the ocean and act as a carbon sink

10. How do Humans Release CO2
Mining
Cutting of forest
Burning of forest
Burning of fossil fuels

11. SO….
1. What is the biological carbon cycle, and how does it differ from the geological carbon cycle?
2. How role do trees and forests play in the carbon cycle?
3. What are potential effects of releasing carbon that has been stored in geological pools?