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 National geographic Typical person   Human population growth.

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Presentation on theme: " National geographic Typical person   Human population growth."— Presentation transcript:

1  National geographic Typical person  http://www.youtube.com/watch?v=4B2xOvKFFz4 http://www.youtube.com/watch?v=4B2xOvKFFz4  Human population growth  http://www.youtube.com/watch?v=sc4HxPxNrZ0 http://www.youtube.com/watch?v=sc4HxPxNrZ0  Public Service Announcement Example  http://www.youtube.com/watch?v=_i5DVKzKGLQ

2  Turn in Biosphere Squares at LAB STATION 1  Take out your SCIENCE JOURNAL  Have your PROBLEM SOLVING on your desk so we can check after our journal entry.

3 Entry 9 2/8  Explain the INTERDEPENDENCE found within an ecosystem.  When explaining your answer be sure to include the carbon cycle, energy transfer, and biotic relationships

4 DateEntry  Independent Variable?  Dependent Variable?  Background info: what do they tell us about methane  How much methane does one cow produce?  Why is methane bad for the environment?  Mythbusters Video:discoveryeducation.com Are cows causing global warming?

5 Warm-up Jan. 2 #68 Human Population vs. Environmental Problems As best as you can determine the connection between Human Population & Environmental Problems.

6 Warm-up Feb. 8 th Entry 12 Use the picture to write a definition and draw a picture to represent the word BIODIVERSITY Biodiversity Variation in the different species that live in an ecosystem. Depends largely upon the variation of plant life, which depends on the amount of precipitation. Sustainability Wise use of earth’s resources to provide the best for people AND the environment both NOW and in the FUTURE

7 More people Bubble Chart  As a group make a bubble chart with ALL of the possible effects of a growing population will have on the environment and society as a whole  MORE people might mean….

8 Warm-up Feb. 8 th Entry #12  Use the words birth or death to fill in the blanks  In order for populations to INCREASE the ______ rate must exceed the _____ rate.  When populations decrease the _____ rate exceeds the ____ rate. Which population is growing faster? How do you know?

9 Let’s think about this……… MORE people might mean….

10 UNIT 3 HUMAN IMPACT Help!!!!!

11 Human Population Growth Too many people = environmental problems!  What caused human population growth?  Causes: Agricultural Revolution- more food to support more people Industrial Revolution- improvements in technology, and medicine, increased birth rate and decreased death rate Urbanization – development of cities, economic and social development

12 Human population Growth: J curve

13 Effects of Human Population Growth  Overcrowding  Increase in pollution- ALL environmental problems relate back to human overpopulation!  Decrease of Natural Resources: More people require more resources  Increase land use

14 Solution:  Zero Population Growth: birth rate = death rate; china offers tax incentives for having one child; education, birth control  Conservation: wise and careful use of resources  Reduce: use less materials  Reuse: use products more than once  Recycle: return products to be reprocessed  Sustainability – ensuring the availability of resources and a stable environment for future generations.

15 What’s in a Histogram? Ages, percent of males and females in the population What can a histogram reveal? An increasing, stable or decreasing population

16 Public Service Announcement Assignment  OBJECTIVE:  You will create a “Call to Action” public service advertisement using iMovie to address the issues that increased human population size has had on a specific environmental problems in North Carolina and the world. This will be a SHORT video delivering the FACTS and the changes need to solve the problem.  GUIDING QUESTION: What impact does human population size have on the environment?  Did you answer /address these questions  Clear Introduction and important background information about the topic  How has the overpopulation of humans contributed to this environmental problem?  What are the short-term effects for the environment/ecosystems if nothing is done to change human behavior? (locally and globally)  What are the long-term effects for the environment/ecosystems if nothing is done to change human behavior? (locally and globally)  What should people do to help stop this problem?  Speak clearly and able to be easily understood

17  Within your group there should be at LEAST ONE article summary related to global issues, one article summary related to a LOCAL issue.  Cite your source on the index card. Write a summary (in YOUR OWN words) on your card explaining the MAIN ideas of the article. (How does overpopulation of humans relate to this environmental issue?) Tape or paste these cards onto your bubble chart.  Air pollution  Land use  Climate change  Migration/Immigration  Deforestation  Public health  Social security  Energy  Waste management  Food resources/Hunger  Water resources  Housing and homelessness  Economics  Resource use/Consumption  Endangered species RESEARCH news articles and opinion pieces on human population trends and related environmental and social issues. See the topics below. Each person should sign up for ONE topic to research.

18 Warm-up Feb. 11 th Entry #13 Ozone depletion Caused by CFC’s - (chlorofluorocarbons) destroy ozone layer – this increases UV radiation exposure – which increases skin cancer and crop damage; IS NOT RELATED TO GLOBAL WARMING!!! Global warming too much CO 2 in atmosphere increases average global temperature this could cause  flooding, climate change, stronger storms, rising sea levels

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20 Global Warming: unnatural warming of the Earth  Cause: Excessive greenhouse gases (carbon dioxide CO 2 and methane CH 4 ) in the atmosphere trap heat, leading to an abnormal increase in earth’s surface temperature  CO 2 comes from burning fossil fuels  CH 4 from landfills and cow farts!

21 Effect: It’s like the earth has a fever! Have you seen the movie “ The Day After Tomorrow”?  increase in temperature (2-4 degrees Celsius), weather patterns will change worldwide, polar ice caps may melt, flooding coastal cities and contaminating drinking water with saltwater.

22 Ozone Depletion: Has nothing to do with global warming!  Cause: CFCs (chlorofluorocarbons), once used as refrigerants and in aerosol cans destroy ozone molecules in the upper atmosphere leading to thinning or a hole UV radiation is NOT heat!!!!

23 Ozone depletion :  Effects: Harmful UV radiation reaches earth causing increased numbers of sunburns, skin cancer, cataracts (leading to blindness), and crop damage.

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25 Group Global Warming Activity  Each group has a different topic describing one effect of global warming.  In your folder you have:  A copy of an article for each person to read  Each person will answer the questions on a separate sheet of paper in complete sentences… in your OWN words.  Each person will draw and complete the graphic organizer on their own paper.  Each group will creatively display the information from their graphic organizer in the educreation app (take a picture of the graphic organizer and each person explains a portion) Each person is expected to speak/talk about their topic. Hi this is _________ and I am going to explain _______. **implications means consequences Cindy.kendrick@cms.k12.nc.usCindy.kendrick@cms.k12.nc.us password is : students

26 Interpreting the graphic organizer  Cause (what is the reason for the situation)  Event (what is happening as a result of the cause)  Effects (the result)  Implications (consequences)  Solutions (how can we fix this problem)

27 Ticket Out the Door 1. What three events allowed for the fast growth of human population? 2. What type of curve does human population growth look like when graphed? 3. Is the Country pictured in the Histogram a stable or developing country? 4. What is the cause of Global Warming?

28  Acid rain Acid rain  http://www.youtube.com/watch?v=7xd_0t55mUY http://www.youtube.com/watch?v=7xd_0t55mUY

29 Warm-up Feb. 12 th Entry #14  Seven students argued about what they thought were the major human causes of global warming. Here is what each of them thought::  Maria: acid rain  Natalie: burning coal  Tessa: the fuel we use in our cars  Anita: toxic chemicals in air pollution  Raul: the thinning of Earth’s ozone layer  Van: the growing landfills  Blaine: the CFC’s from refrigerators  Write out the causes that you agree with. Explain why you agree.

30 Acid Rain  Cause: emissions (sulfur and nitrous oxides from cars and factories react with oxygen and water)

31 Blue ridge spruce and acid rain

32 Acid Rain:  Effects: A lowered pH disrupts aquatic ecosystems, makes soil less fertile, harms plant life, and damages human property.

33 Water Quality  Cause: sediments, oil, fertilizers from land, illegal dumping, acid rain, raw sewage, heated water from power plants  Effect: Disease, habitat destruction

34 Group Global Warming Activity  Each group has a different topic describing one effect of global warming.  In your folder you have:  A copy of an article for each person to read  Each person will answer the questions on a separate sheet of paper in complete sentences… in your OWN words.  Each person will draw and complete the graphic organizer on their own paper.  Use an iPad to take a picture of a NEAT and filled out picture of the graphic organizer.  Each group will PRESENT their information/findings to the class. This means EVERY person will EXPLAIN a part of the graphic organizer. This does not mean you will be READING what is on the picture but EXPLAINING based on information from the article.  **implications means consequences

35 Warm-up Feb. 13 th Entry #15 Biomagnification  Pesticides and TOXIC CHEMICALS “move up the food chain”  Chemical contaminants are stored (bioaccumulation)in the CELLS of living organisms (they do not get broken down.  TOXIC CHEMICALS are magnified in organisms higher up the food chain because predators accumulate pesticides in the bodies of their prey. http://www.youtube.com/watch?v=E5P- UoKLxlA

36 Biomagnification Demonstration  Small beakers represent ALGAE  Medium beakers represent FISH  Large beakers represent EAGLE  Draw a food chain and include arrows pointing to the consumers  Label the trophic levels  As pesticides are passed from one to the next. Write down the NUMBER of pesticides in EACH organism

37 Let’s use PAC-Man for our example..  The dots represent pesticides (toxic chemicals) in the environment  WHO gets more? Pac-Man or Pinky?

38 What is BIODIVERSITY??

39 Biodiversity Loss/ Habitat Destruction  Causes:  Deforestation: cutting down forests for wood, and farming  Draining/filling wetlands  Bioaccumulation: Greatest accumulation in lower organisms in the food chain  Biomagnification Magnified greatest in organims higher in the food chain  Endangerment/extinction: Endangered species are at risk of becoming extinct. Extinction refers to the loss of a particular species. http://www.youtube.com/watch?v=E5P-UoKLxlA

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41 Technology  Satellites: track changes global temperature and the ozone layer  Ice Core Analysis: Measure gases (CO 2 ) that were once in atmosphere  Census Data: http://ozonewatch.gsfc.nasa.gov/Scripts/big_image.php?date=2012-12-29&hem=S

42 Census Data: DevelopingStable

43 Ticket out the Door  1.What is biomagnification?  2. What is bioaccumulation?  3. What organisms are most affected by biomagnification?

44  ADD BIOMAGNIFICATION (with a definition) to your bubble chart  Station rotation:  Read article summaries and take notes  Watch video about global warming and take notes  Go back to your original BUBBLE chart and ADD information in a DIFFERENT color or by STARRING the info so that I know it was added. You should add 5 NEW things to your chart.

45 Ticket Out the Door  1.What three events allowed for the fast growth of human population?  2. Use the histogram to determine if the population is increasing or decreasing. Explain how you know.  3.Explain how Global warming and Ozone depletion are NOT related.  How are they different??

46 Warm-up Environmental Problems  Overpopulation – cause of all environmental problems  Global warming – too much CO2 in atmosphere increases average global temperature ->flooding, climate change  Ozone depletion – CFC’s destroy ozone layer -> increase UV radiation exposure -> increases cancer and crop damage

47 Warm-up Feb. 14 thEntry #16  INVASIVE or INTRODUCED SPECIES  A species that is not native (an alien) to an ecosystem and whose introduction is likely to cause economic, environmental or human harm.  EXPLAIN WHY introducing a species to an environment could be detrimental to an ecosystem.


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