This lesson allows students to see the different types of soil by showing them that each different soil particle has a different density. This is a fun and interactive way to get students excited about soil.
This hands-on experiment demonstrates soil’s function as a water filter, as well as other physics concepts like hydrophobicity, soil absorption and adsorption, soil as a storage container for water, and the positive and negative charges of soil and contaminants.
In this lesson students explore weatherization (physical and chemical) by doing a series of short experiments that demonstrate how rocks and minerals are broken down into soil. Expand this lesson further by taking students on a field trip to look for rocks breaking down into soil.
Students grow mold on apple slices to simulate fungus diseases that attack apple trees. Students apply various “treatments” to apple slices, hypothesize which places and treatments are ideal for growing molds, and observe and name the molds like a plant pathologist
Apples rot and turn brown because they take in oxygen and give off carbon dioxide. If apples are stored in cool temperatures, they will rot slower than they would in room temperature. Other conditions such as humidity, and the storage atmosphere also effect how quickly apples rot.
This is a two-part lesson that can be done over a week. It begins by using vinegar to dissolve an egg’s shell (dissolution) without breaking the membrane that contains the egg. The shell-less eggs are used in the second part of the experiment to study osmosis, the movement of water across a membrane