Energy

1
Energy

• Read Ch 9 10

2
Food chain
Energy
Photosynthetic food chain
Trophic levels
respiration
detritus
3
Ecosystems
The pattern of interaction between organisms and
their physical environment
Energy
Energy
Materials
Information
4
First energy sources were biomass

• Wood

deforestation
5
First energy sources were biomass
deforestation
6
First energy sources were biomass

• Wood
• Animal power

7
First energy sources were biomass

• Wood
• Animal power
• Steam power

8
Steam Power
9
Industrial Revolution
10
First energy sources were biomass

• Wood
• Animal power
• Steam power
• Fossil fuels

coal
11
Coal formed in the Carboniferous Era
360 to 286 million years ago
Nov 20 - Nov 28
12
Coal formed in the Carboniferous Era
13
(No Transcript)
14
First energy sources were biomass

• Wood
• Animal power
• Steam power
• Fossil fuels

coal
oil
15
Oil seeps
16
Oil
kerosene
17
John D. Rockefeller
18
John D. Rockefeller
19
Automobile created oil boom
1900 8,000 U.S. autos
1920 8,000,000 U.S. autos
Henry Ford
20
Oil pipelines
21
(No Transcript)
22
Regional Total Energy Consumption
Organization for Economic Cooperation and
Development
25 countries
23
Regional Total Energy Consumption
Asia
EE/FSU
Over half the worlds energy consumption
24
OECD Energy Consumption
Gas
Nuclear
25
(No Transcript)
26
(No Transcript)
27
Organization of Petroleum Exporting Countries
OPEC
Formed 1960
controls 75 of worlds oil reserves
28
Organization of Petroleum Exporting Countries
OPEC
back to 1990 export levels
29
Energy Consumption
(1998)
30
Energy Usage

• Residential and commercial usage
• 30 of North American energy usage
• mostly for air conditioning
• refrigeration
• space heating
• water heating

31
Energy Usage

• Residential and commercial usage
• 30 of North American energy usage
• but in less developed countries
• mostly for cooking

32
Energy Usage

• Residential and commercial usage
• Industrial Use
• 30 in U.S.
• more efficient in MDCs

33
Energy Usage

• Residential and commercial usage
• Industrial Use

34
Transportation use
35
Transportation Energy Use
(1998)
36
Transportation Energy Use
(1998)
37
Transportation Energy Use
In U.S. government subsidies
for highways trucking
Although rail bus transport is
twice as energy efficient
U.S. autos consume 15 of world
oil supply
38
Transportation Energy Use
U.S. autos consume 15 of world
oil supply
The automobiles of the rest of the
world consume 7 of worlds oil
Public transportation is more
energy efficient