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Warm Up 48

Warm Up 48. What do you know about soil? How does your life depend upon dirt? 3)Look at the soil on your desk. Make several observations. WARM UP 49 1) What do you think happens to the dead leaves, twigs and trees?. 2) What happens to exposed rock over long time periods?.

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Warm Up 48

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  1. Warm Up 48 • What do you know about soil? • How does your life depend upon dirt? 3)Look at the soil on your desk. Make several observations.

  2. WARM UP 49 1) What do you think happens to the dead leaves, twigs and trees?

  3. 2) What happens to exposed rock over long time periods?

  4. 3) Explain how soil is formed.

  5. 4) List several reasons why soil is important.

  6. Warm Up 50 Explain what you see in this chart

  7. Warm Up 51 • What were the 3 nutrients in the soil you tested for? 2) What pH in the soil do most plants like? 3) Explain the chart on the right

  8. Warm Up 52 1) Why do we care about soil erosion?

  9. 2) What are the main causes of soil erosion?

  10. 3) What is desertification? (look up in book)

  11. 2) What are some solutions to overgrazing? (look up in book) 3) What are 2 negative impacts of soil erosion?

  12. Warm Up 53 1) When did humans begin farming?

  13. 2) List several differences between traditional and industrial agriculture.

  14. 3) List at least 1 positive and negative of the Green Revolution.

  15. Warm Up 54 1) Explain what genetically modified organisms (GMOs) are.

  16. 2) What is happening to the amount of arable land worldwide? Why is that a problem?

  17. Warm Up 56 • List at least 3 reasons why you think we study water. (why is water important?) 2) List 5 ways you use water.

  18. 3) What is the chemical formula for water. 4) Estimate how much water you use each day.

  19. Warm up 57 • Why do you think a paper clip can float on water? • Why can a cup of water be filled over the brim? • What heats up faster, sand or water?

  20. Warm Up 58 1) List 3 ways that water is a “unique” substance.

  21. 2) In your own words, describe several steps in the water cycle.

  22. Warm Up 59 • Why is water a limited resource? • Where is most water located?

  23. 3) Explain how an action of someone in NY State can impact the water quality of the Delaware as it passes Philadelphia

  24. 4) Copy and fill in blanks: ______% of Earth is covered by water, of that _______ % is in the Oceans and _______% is fresh water. Of the fresh water most is found _______________.

  25. Warm Up 60 1) How is most water used in the U.S.? 2) List 3 ways to conserve water at home.

  26. 3) How can we protect groundwater?

  27. Warm up 65 • List as many ways humans use water as you can think of. 2)Predict: For what use do we use the most water? 3)Predict: How much do you think you pay for 1 gallon of tap water?

  28. Warm Up 61 1) List several benefits and costs of dams

  29. 2) Why is desalinization not more common? 3) Why is chlorine often added to drinking water?

  30. Warm Up 67 What do you know about the following terms: • Water pollution • Wastewater • Septic tanks • Eutrophication

  31. Warm Up 68 1) Give an example of a point source and non-point source of water pollution

  32. 2) Why is groundwater often difficult to clean once contaminated?

  33. 3) What is the major US law dealing with water pollution?

  34. Warm Up 69 • Why do you think people drink bottled water? 2) Where does most of Audubon’s tap water come from? 3) Copy the chart on the black board. (below warm up or next page)

  35. Safe Drinking Water Act • 54 countries have drinking water laws SDWA passed 1974 requires EPA to set drinking water standards Maximum Contaminating Levels (MCLs)

  36. Bottle Water U.S. has the world’s safest tap water due to billions of $$$ of investment Bottle water 240 to 10,000 times more expensive than tap water 25% of bottle water is tap water

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