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A Drop in the Bucket

Observe the 1 liter of water in the beaker (How many ml are in a liter?) This represents all of the water on Earth.Where is most of the water on Earth located? . Step 1. Step 2. Pour 30 ml of the liter of water into your graduated cylinder.This represents Earth's fresh water, which is about 3% of the total. The remaining 970 ml (97%) of water represents salt water found in oceans. Set this water aside..

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A Drop in the Bucket

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    1. A Drop in the Bucket Project WET

    2. Observe the 1 liter of water in the beaker (How many ml are in a liter?) This represents all of the water on Earth. Where is most of the water on Earth located? Step 1

    3. Step 2 Pour 30 ml of the liter of water into your graduated cylinder. This represents Earth�s fresh water, which is about 3% of the total. The remaining 970 ml (97%) of water represents salt water found in oceans. Set this water aside.

    4. Step 3 Pour 10 ml of fresh water from the graduated cylinder into a plastic cup. This 10 ml of water represents non-frozen fresh water. Only 2.5 ml of this is surface water; the rest is underground. The 20 ml of water left in the graduated cylinder represents water that is frozen in ice caps and glaciers. Set this water aside.

    5. Question What are some reasons why the 10 ml of fresh water left may be unfit or unusable for human consumption and use?

    6. Last Step Use the eyedropper to take one drop of water from the remaining 10 ml and release one drop into your bucket. This represents clean, fresh water that is not polluted or otherwise unavailable for use. This precious drop, about .003 % of the total of all water on Earth, must be managed properly.

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