fossil fuels (in class) Flashcards
1
Q
stores of carbon
A
biomass, atmosphere, ocean, lithosphere
2
Q
how is carbon stored in biomass?
A
- as reduced carbon
- (photosynthesis reduces biomass)
3
Q
how is carbon stored in the atmosphere?
A
oxidized carbon (CO2)
4
Q
how is carbon stored in the ocean?
A
lots of reduced carbon (anaerobic breakdown)
5
Q
how is carbon stored in the lithosphere (rocks)?
A
b/w oxidized and reduced carbon
6
Q
oxidized carbon
A
process by which C gains bonds to oxygen
7
Q
reduced carbon
A
process by which C gains bonds hydrogen
8
Q
origin of oil and natural gas
A
marine
9
Q
biological pump
A
- when plankton die, they get eaten, respire CO2, get eaten, respire CO2, etc.
- lipid rich remainders (cell walls and cell membranes) in sediment
- anaerobic bacteria break down dead matter
—> residue = origin of oil
10
Q
ultimate source of energy in oil
A
SUN
11
Q
coal origin
A
terrestrial
12
Q
components of plants
A
cellulose + lignin
13
Q
cellulose polymer =
A
glucose
14
Q
lignin polymer =
A
aromatic molecules (benzene ring)
15
Q
what happens when a plant dies?
A
- bacteria breakdown cellulose
- lignin = resistant = slower breakdown –> coal
