Transcript Carbon

Overview:
Processes in Carbon Cycling
·Carbon cycles between the ______ (biotic) and _______
(abiotic) environments.
·Carbon is fixed in the process of photosynthesis and
returned to the atmosphere in ___________.
·Carbon may remain _______ up for long periods of time, e.g.
in the wood of trees or in _______ _______ such as coal or
oil.
·Humans have disturbed the balance of the carbon cycle
through activities such as combustion and ____________.
Brainpop
Carbon Cycle
Photosynthesis - using light energy to convert carbon dioxide into glucose
(C6H12O6) Notice glucose has carbon in it. This is how carbon is stored in plants.
Respiration - using energy from food (glucose) and turning it into useable
energy for the body. It produces Carbon Dioxide as a waste. This is how
carbon leaves plants and animals and ends up in the air
Click on the words and follow the carbon!
Pathfinder page 96
Pathfinder page 97
Read the section on Coal mining
Copy the diagram and annotate what it shows
D12.1 Worksheet - More about fossil fuels
a) Coal is made from huge___________ of trees which died millions of years ago.
b) When the trees died they sank to the bottom of the ___________ .
c) Sediment was ___________ on top of the layers of dead trees.
d) Over millions of years the ___________ got thicker and thicker.
e) The dead trees did not rot as there was no ___________ under the sediment for microorganisms (microbes) to use.
f) The sediment was ___________ into sedimentary rock.
g) The dead trees were crushed by the layers of sedimentary___________ above.
h) The dead trees were changed into___________ .
i) A layer of coal is called a___________ .