Sources of Energy

Eric AngatTeacher

How do we help lessen our ecological footprint?

Essential Questions

1.What is Solar Energy?

(06:36)

ENERGY FROM THE SUN

Every human, plant, and animal depends on water for survival. It's controlled by the sun, which produces energy in the form of heat. This heat energy causes the water in the world's oceans, lakes, and even puddles in your backyard to warm and evaporate.

The Water Cycle is powered by the Sun.

What are the major disadvantages of solar energy?• The amount of sunlight that arrives at the earth's

surface is not constant. It depends on location, time of day, time of year, and weather conditions.

• Because the sun doesn't deliver that much energy to any one place at any one time, a large surface area is required to collect the energy at a useful rate.

We use many different energy sources to do work for us. Energy sources are classified into two groups—

renewable and nonrenewable.

Sources of Energy

wind

geothermal

waterbiomass

sun

coal

oil

nuclear

Natural gas

2. Identify the different renewable sources of energy

3. Identify the different non -renewable sources of energy

4.What are fossil fuels?

6. What is Nuclear power?

6. What is Nuclear power?Nuclear fusion -uses HYDROGEN as fuel.-powers the stars.

Nuclear fission -uses URANIUM as fuel.-powers nuclear power plants.

Harnessing the power of atoms.

7. What is hydroelectric power?

7. What is hydroelectric power?power comes from the potential and kinetic energy of dammed water driving a water turbine and generator.

P.E.

K.E.

8. What is the relationship between fossil fuel and global warming?

9. What are the alternatives for fossil fuels?

Biomass

Hydropower

Geothermal

Wind

Solar and other

Petroleum

Natural gas

Coal

Uranium

Propane

Graph the U.S. Energy Consumption by Source

10. How are we affected by the use of fossil fuel?

11. How can we help slow down global warming?

12. What is tidal energy?

12. What is tidal energy?

generates electricity by capturing the energy contained in moving water caused by high tides and low tides.

Renewable Non-Renewable

Renewable Energy includes biomass, hydropower, geothermal, wind, solar and others. Non-Renewable energy includes petroleum, natural gas, coal, uranium, and propane. Alternative energy sources include all renewable energy and uranium

Graph the U.S. Energy Consumption by Source

Biomass -

2.9% Hydropower –

2.7% Geothermal – 0.3% Wind –

0.1% Solar and other –

0.1%

• Petroleum – 38.1%• Natural gas – 22.9%• Coal – 23.2%• Uranium – 8.1%• Propane – 1.7%

Biomas

s

Hydro

power

Geoth

erm

al

Wind

Solar a

nd o

ther

Petro

leum

Natur

al ga

sCoa

l

Uraniu

m

Propa

ne0

5

10

15

20

25

30

35

40

45

Graph the U.S. Energy Consumption by Source

2.9% 2.7%

0.3% 0.1% 0.1%

Renewable Energy

31.1%

22.9% 23.2%

8.1% 1.7%

Non-Renewable Energy

13. Directions: For each item mark whether “renewable energy” (RE) or “nonrenewable energy” (NRE). ___A. Water ___ F. Plastics ___B. Coal ___ G. Natural Gas ___C. Oil ___ H. cardboard___D. Trees ___ I. Sunlight ___E. Paper ___ J. Lumber

_____RE_______A. water _____NRE_____B. coal _____NRE_____ C. oil _____RE______ D. trees _____RE______ E. paper _____NRE____F. Plastics _____NRE____ G. Natural Gas _____RE_____ H. cardboard_____RE_____ I. Sunlight _____RE_____ J. Lumber

Answer key

14. How is renewable energy better than non renewable energy?A. Renewable energy is finite and

cannot be regenerated easily.B. Renewable energy can be

replenished by nature in a short amount of time

C. Renewable energy is non-existent in nature.

D. Renewable energy is always available and cannot be ruined.

15. How is non-renewable energy better than renewable energy?A.Non-Renewable energy is finite and

cannot be regenerated easily.B.Non-Renewable energy can be

replenished by nature in a short amount of time

C.Non-Renewable energy is convenient and readily available.

D.Non-Renewable energy is reusable and it does not run out.

 

16. Which one of the following statements best describes the "Greenhouse Effect"?

A.The heating of the Earth by the Sun

B.The process where heat from the sun is trapped in the Earth's atmosphere.

C.The reflection of ultraviolet light, by the ozone layer in Earth's atmosphere.

D.The process that causes every plant on Earth to grow.

17.Electrical energy can be produced from

A. mechanical energy B. chemical energy C. radiant energy D. all of the above

18. Which uses the most energy in American homes each year?

A.lighting B.water heating C.heating and cooling rooms D.refrigeration

19.The U.S. consumes lots of energy. Which fuel provides the most energy? A. petroleum B. coal C. natural gas D. solar

20. Coal, petroleum, natural gas, and propane are fossil fuels. They are called fossil fuels because:

A.they are burned to release energy and they cause air pollution

B.they were formed from the buried remains of plants and tiny animals that lived hundred of millions of years ago

C.they are nonrenewable and will run out D.they are mixed with fossils to provide

energy

21.Gasoline is produced by refining which fossil fuel? A.natural gas B.coal C.petroleum D.propane

22. Propane is used instead of natural gas on many farms and in rural areas. Why is propane often used instead of natural gas?  A.it’s safeB.it’s portableC.it’s cleaner D.it's cheaper

23. What sector of the U.S. economy consumes most of the nation’s petroleum? A.residential B.commercial C.industrial D.transportation

24. Global warming focuses on an increase in the level of which gas in the atmosphere? A.ozone B.sulfur dioxide C.carbon dioxide D.nitrous oxide

25. Solar, biomass, geothermal, wind, and hydropower energy are all renewable sources of energy. They are called renewable because they

A.are clean and free to use B.can be converted directly into heat

and electricity C.can be replenished by nature in a

short period of time D.do not produce air pollution

26. Today, which renewable energy source provides the U.S. with the most energy?

A.wind B.solar C.geothermal D.hydropower

27. In a nuclear power plant, uranium atoms  A.combine and give off heat

energyB.split and give off heat energy C.burn and give off heat

energy D.split and give off electrons

Please use the following graphic for questions 13 and 14.

28. The family decided to try to reduce their water use. Which of the following measures could help them save water?

A. Run washing machines only when full

B. Repair leaky faucets

C. Turn off the tap when brushing their teeth

D. All of the above

29. If everyone in the family agreed to take 5-minute showers instead of 10-minute showers, about how many liters of water would be saved each day?

A.5

B.11

C.75

D.150

• http://streaming.discoveryeducation.com/index.cfm?&location=gpb• http://www.eia.doe.gov/kids/energyfacts/sources/renewable/solar.ht

ml#fromthesun• http://www.miniscience.com/projects/watercycle/• http://en.wikipedia.org/wiki/Wind• http://www.eia.doe.gov/kids/energyfacts/sources/whatsenergy.html

References