Today in class we discussed sand. Sand may seem pretty boring, but that is because most people don't know how different sand can be. There is brown and tan sand and white sand that everyone knows. But there is also black sand, red sand, and green sand on beaches in Hawaii (because of the colors of the volcanic rocks). And there is pink sand in some places in the Caribbean because of coral and shells.
After talking about sand and looking at pictures, students looked at sand under a dissecting scope. I have black and green sand samples from Hawaii as well as sand from Virginia Beach, Lake Anna State Park, Normandy France and others. If you visit a sandy place, bring me back a little bit of sand please!
We also discussed underwater vehicles today, what they are and what they are used for. Students watched a short video clip and then did a reading to learn more. ROVs are like remote controlled cars with cords and AUVs are the ones without the cords. Neither is large enough to hold a person and both are used to explore deep ocean areas to learn more. The Titanic was discovered in 1986 using an ROV.
Tomorrow we will be in the computer lab working with GoogleMaps. We will also work on Unit 1 Review Sheets. The Unit 1 Test will be Friday.
VSEPR - Valence Shell Ectron Pair Repulsion Theory
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Valence Shell Electron Repulsion Theory
Electrons do not like each other and when looking at molecular structures -
electrons and unshared electrons (the t...
6 years ago
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