Expansion of solids
Seventh graders relate knowledge of the particle theory of matter to observations of the expansion of solids. They watch a demonstration of heat with a copper ball and hoop. They watch a second demonstration with a bimetallic strip.
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New Review Do Cities Affect the Weather? (Making a Cloud in a Bottle)
The dynamics of a city can have a drastic effect on the weather. A hands-on lesson asks learners to build a model to illustrate how city pollution provides a nucleus for condensation. The greater the pollution, the greater chance for...
6th - 12th Science