Gretchen Brinza
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Ocean Engineers

Ocean engineers solve problems related to the ocean.  They may design instruments on submersibles that can collect different types of data as well as the ships that carry cargo around the world.  They are not afraid of water for sure!  They are also buoyancy experts knowing about how changing the density of an object affects its ability to sink or float.

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5.  What Makes An Instrument Sink or Float?

3/6/2013

 
Picture
Now that second graders have compared the mass and volume of each instrument to one another, they are examining a very important property of each instrument--its density!

We have defined density as how packed something is.  In a sinking/floating test, second graders are seeing how this property affects the test's results.  They are testing each submersible and recording the results in their notebooks.  This way, when they go to design their submersibles, they will have all the data they need!


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    Mrs. Brinza

    I love what I do.  No ifs, ands, or buts about it.  

    Useful links

    Sonar Explained

    Exploring Mass 
    (Using a Two-Pan Balance)

    Density

    Buoyancy Explorer

    Voyage to the Bottom of the Sea








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