national geographic typical person human population growth
TRANSCRIPT
National geographic Typical person http://www.youtube.com/watch?v=4B2x
OvKFFz4 Human population growth http://www.youtube.com/watch?v=sc4H
xPxNrZ0
Public Service Announcement Example http://www.youtube.com/watch?
v=_i5DVKzKGLQ
Turn in Biosphere Squares at LAB STATION 1
Take out your SCIENCE JOURNALHave your PROBLEM SOLVING on your desk so we can check after our journal entry.
Entry 9 2/8Explain the INTERDEPENDENCE found within an ecosystem. When explaining your answer be sure to include the carbon cycle, energy transfer, and biotic relationships
Date Entry
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.comAre cows causing global warming?
Warm-up Jan. 2 #68
Human Population vs.
Environmental Problems
As best as you can determine the connection between Human Population &
Environmental Problems.
Warm-up Feb. 8th Entry 12Use 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
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….
Warm-up Feb. 8th 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?
Let’s think about this………
MORE people might mean….
UNIT 3 HUMAN IMPACT
Help!!!!!
Human Population GrowthToo 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
Human population Growth: J curve
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
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.
What’s in a Histogram? Ages, percent of males and females in the populationWhat can a histogram reveal? An increasing, stable or decreasing population
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
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.
Warm-up Feb. 11th 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 CO2 in atmosphere increases average global temperature this could cause flooding, climate change, stronger storms, rising sea levels
Global Warming: unnatural warming of the Earth
Cause: Excessive greenhouse gases (carbon dioxide CO2 and methane CH4) in the atmosphere trap heat, leading to an abnormal increase in earth’s surface temperature CO2 comes from burning
fossil fuels CH4 from landfills and
cow farts!
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.
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!!!!
Ozone depletion :
Effects:Harmful UV radiation reaches earth causing increased numbers of sunburns, skin cancer, cataracts (leading to blindness), and crop damage.
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 [email protected] password is : students
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)
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?
Acid rain http://www.youtube.com/watch?
v=7xd_0t55mUY
Warm-up Feb. 12th 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.
Acid Rain
Cause: emissions (sulfur and nitrous oxides from cars and factories react with oxygen and water)
Blue ridge spruce and acid rain
Acid Rain:
Effects: A lowered
pH disrupts aquatic
ecosystems,
makes soil less
fertile, harms plant
life, and damages
human property.
Water Quality
Cause: sediments, oil, fertilizers from land, illegal dumping, acid rain, raw sewage, heated water from power plants
Effect: Disease, habitat destruction
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
Warm-up Feb. 13th 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
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
Let’s use PAC-Man for our example..
The dots represent pesticides (toxic chemicals) in the environment
WHO gets more? Pac-Man or Pinky?
What is BIODIVERSITY??
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
Technology
Satellites: track changes global temperature and the ozone layer
Ice Core Analysis: Measure gases (CO2) that were once in atmosphere
Census Data: http://ozonewatch.gsfc.nasa.gov/Scripts/big_image.php?date=2012-12-29&hem=S
Census Data:
Developing Stable
Ticket out the Door
1.What is biomagnification?2. What is bioaccumulation?3. What organisms are most affected by biomagnification?
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 .
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??
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
Warm-up Feb. 14th Entry
#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.