what is environmental science? environmental science

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  • Slide 1
  • What is Environmental Science? Environmental Science
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  • Environment Environment: two definitions: The circumstances or conditions that surround an organism or group of organisms The complex of social or cultural conditions that affect an individual or community
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  • Environmental Science Environmental Science: The systematic study of our environment and our place in it. Interdisciplinary!
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  • ENVIRONMENTAL SCIENCE The Major Fields that Contribute to Environmental Science Lets Make a Concept Map! Materials Sheet of white paper Coloring utensils
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  • Major FieldsIncludes Biology: study of living organisms Zoology: study of animals Botany: study of plants Microbiology: study of microorganisms Ecology: study of how organisms interact with their environment & each other Earth science: study of the Earths nonliving systems & the plantet as a whole Geology: study of the Earths surface, interior processes, and history Paleontology: study of fossils & ancient life Climatology: study of the Earths atmosphere & climate Hydrology: study of water resources Physics: study of matter & energy Engineering: the science by which matter & energy are made useful to humans in structures, machines & products Chemistry: the study of chemicals & their interactions Biochemistry: study of the chemistry of living things Geochemistry: study of the chemistry of rocks, soil, & water Social Sciences: study of human populations Geography: study of the relationship between humans & Earths features Anthropology: study of the cultural, geographical, & historical aspects of mankind. Sociology: study of human population dynamics & statistics
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  • Title.10 11 Environmentalist: Rachel Carson, Paul and Ann Ehrlich, Lois Gibbs, Aldo Leopold, James Lovelock, Amory Lovins, George Perkins Marsh, John Muir, Eugene & Howard Odum, Theodore Roosevelt, Edward O. Wilson22 Chronological Order10 2 sentences on each person w/the date and what they did when they contributed to history of environmental science 22 Resources/ Web Addresses for information found on each.. 22 Creativity (incorporated natural elements)14 History of Environmental Science: Timeline Project Due Friday, 8/26
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  • Environmental Problems Today 1. Resource Depletion: Renewable resources: resources normally replaced/ replenished by natural processes; not depleted by moderate use Solar energy, forests, fisheries, air, soil, etc. Nonrenewable resources: minerals, fossil fuels & other materials present in fixed amounts (within human time scale) in our environment 2. Energy: Fossil fuels (oil, coal, & natural gas) provide 80% of energy used in industrialized countries Problems with acquisition & use
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  • 3. Pollution: any physical, chemical, or biological change that adversely affects the health, survival, or activities of living organisms or that alters the environment in undesirable way Air, water At least 1.1 billion people lack an adequate supply of safe drinking water More than twice that dont have modern sanitation
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  • Environmental Problems Today 4. Climate change: Human activities release carbon dioxide (CO 2 ) & other green-house gases that trap heat in the atmosphere Over the past 200 years, atmospheric CO 2 has increased by 35% By 2100 global temps will probably warm 1.5 to 6 C (2.7-11 F) 5. Loss of Biodiversity: the genetic, species, and ecological diversity of the organisms in a given area Over the past century, more than 800 species have gone extinct & at least 10,000 species are now threatened Includes half of all primates
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  • Ecological Footprint Ever wondered how much nature your lifestyle requires? The Ecological Footprint Quiz estimates the amount of land and ocean area required to sustain your consumption patterns and absorb your wastes on an annual basis.
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  • Ecological Footprint Carbon footprint: area needed to absorb carbon emissions generated by your home energy use & transportation Food footprint: area needed to grow crops, fish, & graze animals and absorb carbon emissions from food processing and transport. A plant-based diet is significantly less land and energy intensive than a diet with a high proportion of meat, seafood, and dairy. A recent study found that a low-fat vegetarian diet needs 0.18 hectares per person per year while a high-fat diet with lots of meat needs 0.85 hectares because animals need so much more room. And because meat production drives deforestation and requires high inputs of energy for processing and transportation, it also comes with a high carbon footprint price tag. Globally, it has been estimated that up to 18% of all greenhouse gas emissions are associated with animal product consumption.
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  • Ecological Footprint Housing footprint: area occupied by your home & the area needed to supply resources used in construction and household maintenance Goods and services footprint: area needed to supply consumer items you purchase and absorb carbon emissions from their manufacturing, transport, and disposal
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  • My Ecological Footprint
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  • Our Relationship with the Environment Over Time A. Hunter- Gatherers: people who obtain food by collecting plants & hunting wild animals or scavenging their remains Humans prevented growth in grasslands, overhunted some large mammals, & spread plants to new areas Giant ground sloth Bison
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  • B. Agricultural Revolution: ~10,000 years ago Agriculture: practice of growing, breeding, & caring for plants & animals used for food, clothing, etc. Lead to exponential growth of humans Grasslands, forests & wetlands destroyed for farmland soil loss, floods, & water loss
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  • According to the World Wildlife Fund, rain forests are being cleared for agriculture at a rate of 26 hactares per minute. Calculate how many hectares of rainforest are being cleared: Per hour: Per day: Per year: How big is Effingham County? ~125,000 hectares How big is the state of Georgia? ~15,300,000 hectares
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  • C. Industrial Revolution: ~1700s + 1. Involved conversion from using animal power to fossil fuels for energy 2. Inventions: light bulb, steam engine, factory machinery 3. Cities grew 1900s: began using artificial substances (plastics) instead of animal/plant products Revolutionhttp://www.enchantedlearning.com/inventors/edison/lightbulb.shtml http://en.wikipedia.org/wiki/Industrial_Revolution


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