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Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this activity, learners make water rockets to explore Newton's Third Law of Motion. Learners make the rockets out of plastic bottles and use a bicycle pump to pump them with air.

Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

In this activity, learners make a model of a power plant that uses steam. Learners use simple materials like foil, a tin can, and a pot of water to model a geothermal power plant.

Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.