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Ecosystems

Ecosystems. Life Science. Introduction. The Earth's Natural resources are substances we obtain from the land, water, and air around us. All of the products we use have a natural resource base.

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Ecosystems

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  1. Ecosystems Life Science

  2. Introduction • The Earth'sNatural resources are substances we obtain from the land, water, and air around us. • All of the products we use have a natural resource base. • Minerals, forest products, water, and soil are a few of the natural resources humans use to produce energy and make things people use. Click picture for video review-

  3. Vocabulary • Carbon Dioxide • Animals, including humans, breathe in air, and, as a result of a chemical reaction in their bodies, the oxygen molecules (O2) bond with carbon to produce carbon dioxide. Plants "breathe" in this carbon dioxide (which is as important to their survival as air is to animals), and a reverse reaction leads to the release of oxygen from the plants back into the atmosphere. • Oxygen • Oxygen is a colorless gas found in air. It is one of the life-sustaining elements on Earth and is needed by all animals. • Photosynthesis • Use by green plants of the energy in sunlight to carry out chemical reactions, such as the conversion of carbon dioxide into oxygen. Photosynthesis also produces the sugars that feed the plant. • Pollination • Transfer of pollen grains in seed plants from the stamens, where they form, to the pistil. Pollination is required for fertilization and the production of seeds. • Transpiration • the evaporation of water from parts of plants, especially leaves but also stems, flowers and fruits. Transpiration is a side effect of the plant needing to open its stomata's in order to obtain carbon dioxide gas from the air for photosynthesis. Transpiration also cools plants and enables mass flow of mineral nutrients from roots to shoots.

  4. Ecosystem Video • Click picture to launch video-

  5. Conceptual Activity • How does each part of the food chain interact? Practice: http://www.tki.org.nz/r/environ_ed/interactive/enved_interactive.html • Design a chart: on one side list 10 things in your home environment (inside and out). On the other write how to they interact in the chain of life. • Challenge: Organize the food chain and how they effect each other? http://www.ecokidsonline.com/pub/eco_info/topics/frogs/chain_reaction/index.cfm#

  6. Interactive • Ecosystem Jeopardy Game (Review) • Life Science Overview Jeopardy Game • Click picture to launch video >>

  7. Critical Thinking • As a whole group, discuss how the weather effects the cycles of ecosystems. • Would the location of a particular ecosystem effect the availability of resources in the United States? (Example: global warming is melting our polar ice caps, would this reduce the availability of fresh water?) • What could we do to prepare for this need? • How could we avoid this situation?

  8. Investigation • Xtra Credit • Go to: http://www.fi.edu/city/investigate.html • Observe and report findings on your ecosystem

  9. Citations • Taking Care of Our Earth. 100% Educational Videos(1999). Retrieved December 22, 2006, fromunitedstreaming: http://www.unitedstreaming.com/ • Real World Science: Ecosystems and Biomes. AIMS Multimedia. 2001. unitedstreaming. 19 February 2007<http://www.unitedstreaming.com/> • Food Chain Mystery, The. 100% Educational Videos. 2000.unitedstreaming. 19 February 2007 <http://www.unitedstreaming.com/> • Exploring the Diversity of Life: A World of Difference. Environmental Media. 1998. unitedstreaming. 19 February 2007<http://www.unitedstreaming.com/> • http://school.discovery.com/schooladventures/planetocean/ocean.html • http://www.enchantedlearning.com/subjects/foodchain/ • All other images are from Microsoft Clip Art.

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