can water float on water
DESCRIPTION
Can Water float on Water. Water covers 70% of Earth’s surface. The water of the oceans is not uniform. Climatic processes create large-scale differences in ocean water temperature and salinity. - PowerPoint PPT PresentationTRANSCRIPT
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Can Water float on Water
• Water covers 70% of Earth’s surface. The water of the oceans is not uniform. Climatic processes create large-scale differences in ocean water temperature and salinity.
![Page 2: Can Water float on Water](https://reader036.vdocuments.mx/reader036/viewer/2022081512/56816186550346895dd11e07/html5/thumbnails/2.jpg)
• The goal of this project is to investigate what happens to layers of water with different densities when they are brought together.
• Hypothesis: Saline and cold water are denser than fresh and warm water.
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Can Water Float on Water?
• In this project, I will experiment to see what happens when layers of water at different densities are brought together. I will create “two layers” in plastic bottles, color them with different food colors to tell them apart.
• I will then bring the two layers together by flipping one bottle over on top of the other.
• Materials: clear bottles. Table salt, food coloring, hot and cold water. Thermometer.
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Deep Ocean salinity ranges from 32 to 37.5 parts per thousand.
• My ocean water for this experiment will be approximately 32-37.5 to mimic ocean water.
• 1tsp of salt weighs approximately 6g.
• I will mix 32 oz of water to 6tsps of salt, this will give me approximately 36ppt.
• For the “Fresh” water I will use tap water.
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The red liquid is Saline and the blue liquid is “fresh”. After 10 minutes the liquid stayed the same.
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In this experiment, I put the saline water on top of the fresh water. After 10 minutes the saline had changed places and sank to the
bottom of the bottle.
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Evidence of mixing. Schlieren lines are wavy lines caused by changes in the index of refraction of the solution.
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In this experiment the yellow bottle is tap water (temp 50 degrees) and the green is cold water. After 10 minutes the water stayed the
same.
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In this experiment I put the cold water on top. After 10 minutes the cold water had sunk to the bottom .
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Results:• Experiment 1: Fresh water on top of salt water. The
liquids stayed the same after 10 minutes proving that salt water is denser than fresh.
• Experiment 2: Saline on top of fresh. The saline sank to the bottom, proving that salt water is denser than fresh.
• Experiment 3: hot water on cold water. The liquids stayed the same, proving that cold water is denser than warm.
• Experiment 4: Cold water on warm water. The cold water sank to the bottom, proving that cold water is denser than warm.