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Density practice. Which object is the most dense? Students will calculate the density of a few items then compare them to each other.
Review Personal Floatation Device HW. Students will have the opportunity to stand before their peers and explain their PFD idea.
Pd 6 and 2 will read Deadly Density from the textbook. In WWI, soldiers used Chlorine Gas Grenades as a weapon in trench warfare. Chlorine Gas is more dense than Air, so it sinks in it. When soldiers would hide down in their trenches, the opposing soldiers would throw gas grenades that would emit the sinking gas. It would eventually work its way over and down into the trench and disorient the soldiers who would then become easy targets for the opposing army.
Class Discussion: If we wanted to raise a sunken ship, or the Titanic, how might that accomplished?
We will discuss ideas on how something may be lifted to the surface after being sunken.
Finishing with Mythbuster episode in which Jamie and Adam test the theory that they can raise a sunken ship with PING PONG BALLS. Remember, whether or not something sinks/floats in water only depends on its' density, so if ping pong balls could lower the density of the boat...it may very well be possible.
HW: Prepare for the test next week (B day - Wednesday, A day - Thursday)
Enjoy your weekend!
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