3/10/2010
Photosynthesis converts Sun energy into
Photosynthesis is 1. The combination of oxygen and methane to produce carbon dioxide 2 An endothermic reaction 2. An endothermic reaction 3. An exothermic reaction 4. A plant protection mechanism against oxygen
1. 2. 3. 4. 5.
42% 32% 24%
Chemical energy Electrical energy Gravitational energy Heat energy Light energy
84%
11%
3% 1
2
3
3%
4
1
When plants turn into coal 1. 2.
3.
4. 5.
2
3
4
5
Petroleum source‐rock
All of these choices The chemical energy stored by photosynthesis is preserved in the compounds There is a gradual change from peat to lignite to bitumen to anthracite with pressure and time There is a reduction in the amount of hydrogen in the compounds There is a reduction in the amount of oxygen in the compounds
1. All of these choices 2. Black shale with preserved organic matter 3 Limestone with shells 3. Li i h h ll 4. Porous sandstone 5. Undecayed plants from swamps 0%
0%
0%
0%
0%
1
2
3
4
5
55%
21% 11%
11%
3% 1
2
3
4
5
The trap of a petroleum reservoir needs to be
Petroleum reservoir rock 1. All of these choices 2. Both 4 and 5 3. Black shale with preserved organic d i matter 4. Limestone with shells 5. Porous sandstone
3%
0%
1. 2. 3. 4. 5.
71%
Impermeable cap rock Porous reservoir rock Stratigraphic control Structural control Unconformity control
46%
30%
24% 11%
11%
5% 0% 1
3%
0% 2
3
4
5
1
2
3
4
5
1