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Topics/Subjects:
Physical sciences  
Earth structure  
Materials Cost:
$1 - $5  
Learning Time:
1 to 4 weeks  
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In this activity, students investigate the interacting parts of the Earth system by observing changes in evaporation rate in four small aquariums with different initial conditions. The demonstration requires 4 small aquariums, soil, plants, water,... (View More)

This is an activity about the conditions for a sustainable biosphere. Learners will build a biosphere that is a balanced, self-enclosed living system able to run efficiently over a long period of time. This activity is in Unit 3 of the Exploring the... (View More)

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