Chapter 4 Earth’s Resources. Conservation of Energy Create a Brochure promoting the Conservation of Energy In your Brochure you must persuade humans.

Chapter 4Earth’s Resources

Conservation of Energy

Create a Brochure promoting the Conservation of Energy

In your Brochure you must persuade humans to protect/conserve Earth’s resources

Your Brochure must include color, pictures, and loads of facts

You will have 3 days to complete the brochure You may include pictures (small) from magazines or

the internet You will be graded on content of course and

creativity

4.2 Alternate Energy Sources

Solar Energy Two Advantages of “fuel”

__________

____________

Solar collectors (panels) absorb heat from the sun and convert it to electricity

Disadvantages ________________________________

__________________________________

Less electricity on cloudy days and in winter

NCSU Solar House

http://www.ncgreenbuilding.org/site/ncg/attachments/gallery_DCP_2023.JPG

4.2 Alternate Energy Sources

Nuclear Energy Fuel comes from nuclear materials that release energy through

nuclear fission the nuclei of heavy atoms such as uranium-235 are bombarded with neutrons

The uranium nuclei split into smaller nuclei and emit neutrons and heat energy

Advantages ________________________________

_________________________________

Disadvantages ______________________________________

______________________________________

Possible accidents could occur that would release radioactive materials

Alternate Energy Sources

http://tiffanyweb.bmts.com/~moby/physics/New%20Folder/uranium.jpg

Nuclear Energy

4.2 Alternate Energy Sources

Wind Energy

Conversion of wind into energy by using turbines and windmills

In the next 50 to 60 years, wind power could meet between 5 to 10 percent of the country’s demand for electricity.

Advantages

__________________________

__________________________

Disadvantages

____________________________

______________________________

Islands or isolated regions are good candidates for wind energy expansion, WHY?

Wind Turbines

http://eandt.theiet.org/explore/students/2011/images/640_HornsRev%20640.jpg

http://www.rechargenews.com/multimedia/archive/00028/Altona_28959a.bmp

4.2 Alternate Energy Sources

Hydroelectric Power Generated by FALLING water

Water held in a reservoir behind a dam is a form of stored energy that can be released through the dam to produce electric power

The strong water flow that results drives turbines and electric generators

Advantages ______________________________

______________________________

Disadvantages ________________________________________________________

________________________________________________________

Fontana Dam

http://www.maconnchistorical.org/gen/postcards/fontana_dam.jpg

http://www.nps.gov/grsm/planyourvisit/images/fontana-2.jpg

Fontana Dam

http://americanhiking.chattablogs.com/archives/Fontana%20Dam.JPG

http://floridahistory.com/Fontana-Topo.jpg

Tenn Valley – Built in NC to accommodate the rising of electrical power demands in 1940s

Tallest Dam in the Eastern US – 480 ft

4.2 Alternate Energy Sources

Geothermal Energy

harnessed by tapping natural underground reservoirs of steam and hot water

Hot water is used directly for heating and to turn turbines that generate electric power

Advantages

___________________________________________

____________________________________________

Disadvantages

_____________________________________________

_____________________________________________

Wells usually only last about 10 to 15 years

The Geysers Are the World’s Largest Electrical Geothermal Facility

4.2 Alternate Energy Sources

Tidal Power

harnessed by constructing a dam across the mouth of a bay or an estuary in coastal areas

Must have large tidal ranges – at least 8 meters

Advantages

__________________________________________

__________________________________________

Disadvantages

___________________________________________

___________________________________________

Tidal Power

http://technologystudent.com/images5/tidal1.gif

Tidal Power

http://energy.saving.nu/hydroenergy/images/rance.gif

Alternate Energy Foldable

• You will use the paper provided to you to create a layered book foldable like the one below.

• On the tab of each layer, list one alternate energy. On the inside of each layer, describe the energy type.

Insert in Notebook on next available odd page