Energy Resources

Chapter 26

6/2 Do Now

• Come up with a list of ways in which we produce energy. – How is electricity produced?– How do we get heat in our homes?– What causes the pilot on the stove to light?

6/2 HomeworkDraw a picture for each Alternative Source of energy. The picture

must stand alone (meaning that someone should be able to look at the picture and understand what it is illustrating)

Color, neatness, and creativity are all good assets for this activity.Collected tomorrow (do on a separate sheet of paper)

1. Solar Energy 2. Energy from Water3. Geothermal Energy4. Wind Energy5. Nuclear Energy6. Biomass7. Oil Shale and Tar Sand

Transfer of Solar Energy

• Photosynthesis– Captures suns energy

• Maintenance• Growth• Reproduction

• Consumers– Eat producers and use stored energy for their

own life process

Traditional Sources of Energy• Wood (Biomass Fuel)

– US – 4% as primary fuel (rest of world 1.5 Billion)– Leads to Deforestation

• Field Crops– Corn, Hay, Straw– Farms and Homes– Used when wood is scarce

• Fecal Material– Solid wastes of animals– India, Pakistan, and Afghanistan

• Peat– We will see

Non-Renewable Energy Sources

• Conventional– Petroleum– Natural Gas– Coal– Nuclear

• Unconventional (examples)– Oil Shale– Natural gas hydrates in marine sediment

Fossil Fuels

Peat Formation

6/3 Do Now

• Without using your notes….

– List some ways in which we can produce energy that we discussed in class yesterday.

(Think traditional sources and non-renewable)

Coal, oil andnatural gasare derivedfrombiomass(plants ormarineorganisms)producedmanymillions ofyears ago.

CoalCoal : a major cause of pollution

• Coal gives off smoke and ashwhen it is burned, in addition tocarbon dioxide (CO2).

• Global warming

Different Types of Coal• Peat

– Several of thousand years old– Light, spongy, organic fossil fuels derived from moss and other bog plants.– Low-cost fuel with high efficiency (better than wood)

• Lignite (40% carbon)– Compressed Peat– Soft, brown, low-grade coal (low efficiency) (low sulfur production)

• Bituminous (85% carbon)– Used in electric power plants– Most reserves– Burning releases carbon, sulfur and nitrogen oxides

• Anthracite (90-95% carbon)– Most efficiency and clean burn– Less than 1% of coal reserves in US

PRESSURE

EFFICIENCY

Different types of coal

Oil – Liquid Gold

Crude oil is also known as petroleum.• It is a dark, sticky liquid found in oil wells deep in the earth or

under the sea.

• It is often found with natural gas.

• Plastics, glues, detergents, drugs, dyes and polishes can be made from crude oil.

Natural GasGas is cleaner for the environment than either coal or crude oil. (mainly

methane)

• About 18% of our energy consumed aroundthe world comes from natural gas.

Natural GasIt is produced along with oil by drillingunderground where pockets of natural gaswere trapped.

• The gas is carried from one country to anotherby pipelines, trucks or tankers.

Nuclear Power

Alternative Resources Informative Poster

• Alternative Resources1. Solar Energy (must meet before and divvy up topics)2. Energy from Water3. Geothermal Energy4. Wind Energy5. Nuclear Energy6. Biomass7. Oil Shale and Tar Sand

• Must have in your picture both advantages and disadvantages or draw backs for each*

• All groups will meet after and organize a presentation for each topic. • Those who don’t have the topic will be responsible for the information

from the presentations• Presentations will happen on Friday, May 30th

Renewable Energy Sources• Solar photovoltaics• Solar thermal power• Passive solar air and water heating• Wind• Hydropower • Biomass• Ocean energy• Geothermal• Waste to Energy

Photovoltaic Cells

Hydroelectric Power

Geothermal Energy

Biomass