Friday, January 10, 2014

BUILD A HYDROMETER


1. Define the term salinity.
the amount of salt measured in a body of water.
2. If you add salt to a water solution, will a hydrometer float higher or lower in the water? Explain your choice.
lower because it was more dense.
3. What effect does the addition of salt have on the properties of water?
it makes salinity levels higher
4. Is it easier to float in the ocean than in a swimming pool? Explain why or why not.
a pool because an ocean has more salt in it then most or any pools.
5. Define the term density.
a ratio of the amount of mass per unit volume
 6. The salinity of seawater is also affected by the temperature of a body of water. Explain how temperature causes differences in the salinity of water.
because when its hot the molecules of salt are moving around and begin to multiply.


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