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Energy IPS What is Energy? • Energy is defined as the ability to do work. • Work is done on an object when it moves as a result of applied force. • Where does it come from?!? • Is there an unlimited amount? When earth was young… • Chemosynthesis: is a process, like photosynthesis, which some organisms that are not accessible to sunlight use to produce food. (Food = Energy source!) • Photosynthesis: is the biological conversion of light energy (sun) into chemical energy. – Carbon dioxide, water, and certain inorganic salts are converted into carbohydrates (Sugar?) – This occurs in green plants, algae, and photosynthetic bacteria. – Chlorophyll: The green pigment of plants that traps the energy of sunlight for photosynthesis Basic Photosynthesis https://www.youtube.com/wa tch?v=PABzqBjRHIg Applied to us/food https://www.youtube.com/watch ?v=eo5XndJaz-Y • Cellular Respiration: Cells use oxygen to break apart the sugar molecule and release energy Producers create all of the chemical energy on which all other organisms depend. Consumers: Organisms that cannot produce their own food, and must eat Producers in order to live/have energy. Classifying Consumers Primary Consumers that • Herbivores: eat plants only. • Carnivores: Secondary Consumers that eat animals only. • Omnivores: They consume both! • Scavengers: Consume dead or decaying organisms • Decomposers: Feed on dead organisms and organic waste. Classify!!