Living Energy
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Transcript of Living Energy
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Living Energy
Students will be able toExplain how sun provides energyCreate/read food webs/pyramid
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Video
• <embed src="http://www.metacafe.com/fplayer/304161/food_chain.swf" width="400" height="345" wmode="transparent" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"></embed><br/><font size="1">
• <a href="http://www.metacafe.com/watch/304161/food_chain/">Food Chain - video powered by Metacafe</a></font>
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Energy
All living things need energy!To carry out functions, make proteins…
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Sources of Energy
Most life on the planet depends on the sun!
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Exception
Deep Ocean VentsLive off of chemicals (sulfur) from eruptions inside Earth
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Sources of Energy
Cell produces its own energy – AutotrophSunlight – Photoautotroph (plants)Chemicals – Chemoautotroph (bacteria)
Cells that must consume others - Heterotroph
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Energy Units
calorie = Unit of energyRaise 1 gram of water 1°C
Food calories = Calorie (1,000 cal)
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Types of animals
Producer – Makes its own foodPrimary Consumer – Eats a producer (Herbivore)Secondary Consumer – Eats primary (Carnivore)Tertiary Consumer – Eats Secondary (Top pred.)Omnivore - Eats plants and animalsDecomposer – Breaks down body to release
chemicals back to plants
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Food Chains
Simple pattern of whom eats whomArrows follow the energy
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Food Webs
Reality is much more complicated “Web”
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Food Web Pyramid