Warm UpWhat are the advantages and disadvantages of each of the following sources of energy?

Nuclear

Solar

Wind

Geothermal

Hydroelectric

Petroleum/Oil

Natural Gas

Coal

Objective and LEQ

SWBAT evaluate the impact of human population growth on the environment and discuss the issue of population growth throughout the world.

LEQ: How does humans’ demand for resources affect the environment and people living in that region?

Quick Review1. I provide clean energy from running water which turns giant turbines, but

there are fewer and fewer locations where I will work

2. I am the most abundant of fossil fuels, a nonrenewable source of energy, expensive to mine, and a cause of acid rain (pollution)

3. I am the “hope for the future.” A free and non-polluting source of energy but expensive to build in homes. On cloudy days I’m hard to find.

4. I release an enormous amount of energy but am dangerous due to high risks of radioactive waste products, meltdowns, and radiation exposure. I form from the splitting nucleus of uranium atoms.

5. I am the cleanest burning fossil fuel but will leave large craters in the earth from where I’m extracted and am highly flamable if handled carelessly.

Solar Energy

Natural Gas

Coal

Hydroelectric energy

Nuclear Fission

Who am i?

Cornell Notes

• Questions are in RED!

• Answers are in YELLOW!

What is sustainability?

Meeting our current needs without limiting the ability for future generations to meet theirs

Think

*Brainstorm

What are human actions that have a negative environmental impact (not sustainable)?

*Brainstorm

What are human actions that have a positive environmental impact (sustainable)?

Pair, Share Human actions that have a negative environmental impact

•Overgrazing, Mining, Drilling, Urbanization, Overfishing, Polluting, Agriculture, Deforestation

Human actions that have a positive environmental impact

•Recycling, Planting trees, Alternative Energy Sources, conserving energy, sustainable agriculture

LORAX

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As we watch…

• Follow along with and answer guided questions

• Think About:– Why is sustainability important now and in the

future?– How will our environment and life be affected

if we do not use sustainable practices?– In what ways will our world change if we

continue our current ways of living?

Sustainability through

Dr. Suess’s Eyes

http://video.google.com/videoplay?docid=6650219631867189375#

Video Questions

After watching part of “The Lorax,” answer the following questions:

– Why is sustainability important now and in the future?

– How will our environment and life be affected if we do not use sustainable practices?

– In what ways will our world change if we continue our current ways of living?

What are Chloroflourocarbons (CFCs)?

• Active chemicals associated with human products.

How do they harm the environment?

• Destroy the ozone layer (protects us from UV rays, which cause skin cancer).

Solutions?

• CFCs banned in 1970s

What is deforestation?• Removal of trees to use land for other

purposes.

How does it harm the environment?

• Less CO2 removed from environment, damages soil, increases erosion.

Solutions?

• Plant trees, use alternative energy sources, stop deforestation.

What are fossil fuels?• Nonrenewable; produced over millions of years• Coal- produced from plants• Natural gas & petroleum/oil- produced from plants

and animals

How does it harm the environment?• Used faster than replaced• Produced CO2 contributing to global warming.

Solutions?• Alternative energy, renewable resources

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Active chemicals associated with certain human products (hairspray).

CFCs are released when products are used and the chemicals destroy our thin ozone layer, which shields us from the sun’s harmful UV rays more skin cancer

CFCs banned by government in 1970s

Removal of trees so land can be used for other purposes.

Responsible for ~ 20% of Earth’s greenhouse gasses- less CO2 removed from atmosphere by trees-damages soil, increased erosion

Replant trees and use other materials or energy sources to prevent cutting down trees

Coal, natural gas, & petroleum; formed from remains of dead plants & animals over millions of years.

Being used faster than they can be replacedNonrenewableReleases a lot of carbon dioxide into the atmospherecontributes to global warming

Find a renewable source of energy that can be used instead (ex: solar, wind, water, geothermal)

Human population GROWTH

1. Based on the Lorax, how does an increased human population cause an increase in the above environmental impacts? 2. What are other causes of an increased human population? 3. How does the history of fossil fuels video reflect human population growth?

4. What have we created to meet our “needs” and what has the consequence been? 

5. Should human population growth be controlled? Why or why not?

*Population Growth Throughout the World:People Bomb Stations

PEOPLE BOMB1.Find ONE partner2.With your partner, you are going to answer

the questions for each scenario3.Read the information for each scenario out

loud with your partner-switch off who reads for each scenario

4.Answer the questions on a separate sheet of paper

5.THIS IS A PAIR GRADE… you must each turn in an assignment!

EXIT TICKET

1. Which of the following is most often a result of deforestation?a. Decreased runoff b. Increased erosionc. Increased transpirationd. More nutrients for the soil to use

2. Which substance is considered to be a factor affecting Earth’s ozone layer?a. Chlorofluorocarbonsb. Ethyl alcoholc. Nitrogen gasd. Water vapor

3. The burning of fossil fuels is causing an increase in which of the following?a. Atmospheric nitrogenb. Atmospheric oxygenc. Atmospheric carbon dioxided. Atmospheric phosphate

4. Which of the following would be the most sustainable fuel for the Once-ler to use in his Thneed factory?a. Coalb. Natural gasc. Petroleumd. Solar

5. Carbon dioxide is a factor in global warming. An increase in carbon dioxide has been correlated with an increase in Earth’s temperature. Which source of energy increases the carbon dioxide in the atmosphere?

a. Hydroelectricb. Solarc. Windd. Natural gas