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.

ITS ALL CONNECTED

1.        Why do you think there are international laws for dumping waste/trash/chemicals in the ocean, rather than just local laws? Do these laws only need to extend to nearby neighboring countries? Explain. 

                there are laws for dumping waste/trash/chemicals so that everyone has something to follow and that we don't have a lot of pollution. I think that there should be laws restricting that no one should be allowed to dump and waste, etc. into any ocean or river.

2.       What else can be done to protect the oceans from being the repository for waste?

                we could help protect oceans from waste by recycling more, by getting more use out of things and don't take for granted as to what  we are lucky to have the resources we have and should use them and not  waste them.

3.       You have been given a separate question to investigate.  Attach your piece for the display case to this assignment, or submit separately. Remember: colorful, near, accurate, source cited.