Fifth graders continue to track their mini-lakes, gathering evidence on both the volume and the weight over time. Students are beginning to notice that both the weight and volume are decreasing, and this is helping students to better understand the ideas behind evaporation.
Since we've considered what happens as water is heated, we're also thinking about what happens as water is cooled.
We've also tracked water's weight and volume as it freezes and then melts, discovering that the mass stays the same and that the volume increases as it gets colder and returns to its starting level as it melts.
Since we've considered what happens as water is heated, we're also thinking about what happens as water is cooled.
We've also tracked water's weight and volume as it freezes and then melts, discovering that the mass stays the same and that the volume increases as it gets colder and returns to its starting level as it melts.
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