1
Just as air can have different densities, water can have different densities as well. As the salinity of water increases, the density increases as well. Fresh eggs will float in saltwater, but will sink in freshwater. This will show that as the salinity increases the density also increases.
Grade Level   4 5 6 7 8 9 10 11 12
Classroom Activities Curricula and Instruction
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2
This activity shows high schoolers what factors tend to resist changes in ocean pH, and why the ocean is salty.
Grade Level   9 10 11 12
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3
Set the air temperature and dew point in the four different altitudes and see what type of precipitation will fall to the ground. Watch closely, they may even change form as they fall!
Grade Level   6 7 8 9 10 11 12
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4
"Water freezes at 32 degrees Fahrenheit (0 degrees Celsius). Adding salt to water lowers the freezing point. How low the freezing point goes depends upon the amount of salt in the water. The students will make homemade ice cream but the """"freezing times"""" will vary using different amounts of...
Grade Level   4 5 6 7 8 9 10 11 12
Classroom Activities Curricula and Instruction
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