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Water Cycle - Oceans (3)
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Water Cycle - Oceans (3)
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PROBLEM: Why are the oceans salty?PREDICTION:
PROCEDURE:
MATERIALS: salt, sand, sugar, baking soda, epsom salt, mud, measuring spoons, beakers, warm water
In a beaker measure 100 ml of water. Then stir in1 ml of one item, first in cold water than warm. Record what happens in the data chart below. Then dispose of the materials as instructed by your teacher.
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COLD |
WARM |
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salt
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sand
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sugar
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baking soda
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epsom salt
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mud
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What substances dissolved the fastest?CONCLUSION:
Can you figure out why the ocean is salty and not sweet?
