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We have three 6th grade Science classes and two 8th grade Science classes blogging here from the Pacific Northwest in Chimacum, WA! Sixth graders are learning a bit about Mt Saint Helens, environmental science through fresh water ecology, and physical science this year. Eighth graders are learning about life science this year. Please join us as we learn Science by exploring our world.
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Density vs Buoyancy

In order for a buoyant force to be great enough to make an object float, does the object need to be less dense than water? If you think that yes, an object does have to be less dense than water to float, then how does a metal ship float? Explain that. How does a concrete boat float (remember the video we saw.) Please explain your answer by leaving me a comment.

(For those of you not from Chimacum who wish to add an answer or challenge something you read here are some of the resources we used: Density and Buoyancy Links.)

Article posted February 11, 2009 at 09:13 AM • comment (35) • Reads 65 • Return to Blog List
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