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Drill #1 12/14/09

Drill #1 12/14/09. Think of an acorn (2 oz), then think of the massive oak tree (2000 lbs) that grows from that acorn 75 years in the future. Where did the material come from to turn that 2 oz. acorn into a massive 2000 lb. oak tree?. Drill #2 12/15/09. How do plants produce their energy?

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Drill #1 12/14/09

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  1. Drill #112/14/09 • Think of an acorn (2 oz), then think of the massive oak tree (2000 lbs) that grows from that acorn 75 years in the future. • Where did the material come from to turn that 2 oz. acorn into a massive 2000 lb. oak tree?

  2. Drill #212/15/09 • How do plants produce their energy? • What things do plants need in order to survive? • What things to plants produce?

  3. Photosynthesis is based on light

  4. Light is both a wave and a particle • Photon – Unit of light energy; usually referred to as a “packet of energy” Least Energy Most Energy

  5. Thought Experiment • In an experiment, plants were grown under colored filters that allowed equal amounts of light of different colors to strike different plants. Under which colored filter do you think plants grew the slowest? Why?

  6. Drill #312/16/09 • Which color of the visible light spectrum is least useful to plants during photosynthesis? Why? • What do you think the reaction (formulas) of photosynthesis would look like?

  7. Plants Use Light Energy To Produce Energy • Photosynthesis – The process of a plant using light energy to build organic compounds (polysaccharides) and ATP

  8. Balanced Equation • 6 CO2 + 6 H2O C6H12O6 + 6 O2 • Balance Sheet: • C = 6 C = 6 • H = 12 H = 12 • O = 18 O = 18 Sunlight

  9. Drill 11/4/10 • In front of you there are Marshmallows, Gummy Bears, and Spice Drops • Marshmallows = Oxygens • Gummy Bears = Carbons • Spice Drops = Hydrogens • Divide a piece of paper into 2 halves, the left side labeled “Reactants” and the right side labeled “Products” • Use the models to make CO2, H2O, C6H12O6, and O2 • Show how many reactants it takes to make the products of photosynthesis – record your answer

  10. Redox Reactions • Based on the demonstration: • What do you think a reduction reaction is? • A reaction where an electron is gained (charge of molecule is reduced) • What do you think an oxidation reaction is? • A reaction where an electron is given up (usually oxygen does this, like in rust)

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