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Water Density and Stability Lab
Students observe how different water densities and salinity control the depth at which different water masses occur. Submarines are used as a case study. This is a well-designed with an excellent worksheet.
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How Dense Are You?
Students examine how density is a value that describes what type of a material an object is made of regardless of its shape or size.
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Clay Boats
Seventh graders are given the opportunity to use model-building as a way to help comprehend the forces and phenomena at work in the world around them. They use both successful and unsuccessful models to make inferences, refine...
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Separation Before Plastic Recycling
Students participate in a demonstration to test the different densities of plastics, and suggest a method that plastic waste can be separated and collected.
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Let's Catch Some Dirt From the Air
Students create "catchers" that collect dirt particles from the air. They observe the particulate matter that is collected from the air and discuss the effects and causes of air pollution.
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Wetlands/Watershed Model
Students work together to create a watershed model. They discover the flow of surface water on different topography. They examine how materials originate from miles away and end up in a different wetland.
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Water Density
Students identify and analyze the concept of density using the formula, density equals mass divided by volume. They review the differences in salinity levels of the ocean and note that the changes in density are caused by wind and...