Thursday, August 19, 2010

Sand and Underwater Vehicles

Students started with a reading about the Great Ocean Conveyer Belt and some oceanography questions using the tables and diagrams in their notes.

Today we discussed sand and where it comes from, what its made of, what colors it can be, an how shape and size affect the texture. In Hawaii there are black, red, and green sand beaches that have been deposited from the weathering and erosion of volcanic rocks. In the Caribbean, you can visit white and pink sand beaches from the weathering and erosion of sand and coral. Students made observations of sand samples from Hawaii, Grand Cayman, Normandy France, Lake Anna, Lake Superior, California, and Virginia Beach.

The rest of class was spent working independently on the seafloor features surrounding the United States and reading and answering questions about underwater vehicles. Submarines are larger than submersibles and carry more people and can go longer distances. ROVs and AUVs are robots like remote-controlled cars, but go underwater. ROV's have a tether (cord) connecting them to power and AUVs do not.

Tomorrow students will review the material in Unit 1 for the test on Monday.
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1 comment:

Anonymous said...

I think that submersibles are better than submarines even though they can carry less people because they can go deeper.
alex perkins
2nd

August 31, 2010 at 9:35 PM

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Computer Lab Etiquette

You are in the computer lab to do work for this class. If you are not doing work, then we will have problems.

Do not pack up early. Work until the bell or until MsJ says.

SAVE OFTEN. And if you save to a key, also save it to your number. If you lose it, you will have to do it again.

If MsJ asks for your attention, stop what you are doing and listen to what she has to say.

You may watch videos about your organism through reliable websites.

You may listen to music through the computer if you have your own headphones. Rule1 MsJ cannot hear it. You get one warning. Rule2 Turn it on and listen – no million clicks and constant changing. Take both ear phones out when MsJ is talking.