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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.

In this activity, learners explore how engineering has developed various means to remove impurities from water.

This activity has learners observe water and compare it to other liquids.

This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

Learners see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float.

This is an activity (located on page 3 of PDF under Nasturtium Leaves Activity) about surface tension.