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01 12-2012 warm up – page 97
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01 12-2012 warm up – page 97

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  • 1. Warm Up – Page 97
    • Create two circle graphs (pie charts) representing your two charts. You can use the circles at your table to trace.
    • Where is the most freshwater on Earth located?
    • Is the source referenced in #2 commonly used by people for drinking, water lawns, etc.? Explain.
    • Where is most of the Earth’s water found?
    • Where is most of the Earth’s usable freshwater found?
    • What percent of all of Earth’s water is usable for drinking, etc.?
      • Groundwater 4 mL & surface water .7 mL = 4.7mL
      • 4.7/1000
      • .0047
      • .47%
  • 2. Total Water – make sure you label your types
  • 3. Total Freshwater – make sure you label your types
  • 4. Page 98
    • What makes water so special?
    • Cohesion and Adhesion Lab
    • Question: How many drops of water can you place on the surface of a penny before it overflows?
    • Hypothesis:
  • 5. Materials and Procedure
    • Materials
      • Penny
      • Cup of water
      • Dropper
    • Procedure
      • Drop water from the dropper onto a penny, counting each drop.
      • Examine the penny from the side after adding just one drop, when the penny is half full, and just before it overflows.
  • 6. Data
    • Penny after one drop:
    • Penny when it was half full:
    • Penny just before it overflowed:
    Person Number of Drops Table Average