Resources

1
Resources Energy
2
BIG Ideas

• People and other organisms use Earths resources
  for everyday living.
• People use energy resources, most of which
  originate from the Sun, for everyday living.
• The use of natural resources can impact Earths
  land, air, and water.

3
I. Resources

• Limited
• Two categories
• Renewable can be replaced by nature at a rate
  close to the rate at which they are used
• Nonrenewable renewed very slowly or not at all

4
A. Renewable Resources

• Resources that can be replaced within a humans
  lifetime
• Name a few resources that you think are
  considered renewable

5
Water
6
Wind
7
Vegetation
8
Sunlight
9
B. NONrenewable Resources

• Resources that cannot be replaced once they are
  used
• Name a few resources that you think are
  considered nonrenewable

10
Coal
11
Oil
12
Minerals
13
C. Formation of Ores

• Ores Deposits of metals and non-metals that can
  be removed (mined) from the crust profitably.
• Can you think of some examples?

14
Examples of ORES

• pyrite
• magnetite
• hematite
• galena
• graphite
• sulfur

• gold
• silver
• copper
• zinc
• nickel
• lead
• platinum

15
II. Fossil Fuels

• organic in origin (formed from living things)
• nonrenewable
• may cause pollution
• relatively cheap
• easy to use
• What fossil fuels do you know of?

16
Examples of Fossil Fuels

• coal
• petroleum
• natural gas
• the main sources of energy for transportation,
  farming, and industry

17
A. Coal
18

• Peat brownish partially decomposed plant remains
• Lignite water and gases squeezed out into a
  denser material (brown coal)

19

• Bituminous Coal formed as a result of pressure
  of more deposited sediment above (soft coal)
• Anthracite produced by extremely high
  temperatures and pressure the hardest of all
  coals

20
(No Transcript)
21

• Is anthracite most like an igneous, sedimentary,
  or metamorphic rock?
• WHY?

22

• Bituminous coal and anthracite consist of 80-90
  Carbon, and produce a great amount of heat when
  they burn

23
(No Transcript)
24
coal
25
B. Petroleum and Natural Gas
26

• Petroleum and natural gas are mixtures of
  hydrocarbons
• Hydrocarbons formed from microorganisms that
  lived in oceans or lakes millions of years ago
• Petroleum oil liquid hydrocarbons
• Natural gas hydrocarbons in gaseous form

27

• Crude Oil unrefined petroleum

28

• Petrochemical chemicals derived
  from petroleum
• synthetic fabrics
• medicines
• tars
• waxes
• synthetic rubber
• insecticides
• chemical fertilizers
• detergents
• shampoos

29
III. Alternative Energy

• A. Solar Energy

30
1. Passive Systems

• greenhouses or home windows
• no working parts

31
2. Active Systems

• solar collectors glass boxes with tubes that
  circulate water
• sun heats the water as it moves through the tubes

32
(No Transcript)
33
B. Geothermal Energy

• Energy from the heat of the Earths interior

34

• Where water flows through rock heated by magma
• Hot water (steam) results
• Creates source for huge supply of energy
• 80 of homes in Iceland are
  heated geothermally

35

• Generally used in areas of volcanic activity

36
C. Water and Wind Energy

• 1. Hydroelectric Energy Energy made by moving
  water

37
11 of U.S. electricity is hydroelectric
38

• 2. energy from tides
• 3. energy from wind

39
D. Nuclear Energy

• Nuclear Fission a heavy nucleus divides,
  releasing large amounts of energy.
• Advantage
• Does not produce carbon dioxide and other
  greenhouse gases
• Disadvantages
• High operating costs
• Concerns about radioactive
  wastes
• Nuclear accidents

40

• Nuclear Fusion multiple atoms join together to
  form a heavier nucleus
• The energy source of the future
• Process that provides the sun and stars with
  energy to shine
• Has been used to produce nuclear bombs
• Not yet successfully controlled

41
E. Biomass

• Fuels derived from living things
• wood
• field crops
• fecal material

42
IV. Virginias Rock Mineral Resources

• Coal ? energy
• Gravel and crushed stone ? road construction
• Limestone ? making concrete