Description: In this experiment, by Derek Muller at Veritasium, a copper wire and fishing string are attached to weights and placed over a block of ice. An increase in pressure causes the ices to melt below the wire and freeze after. The difference in behavior of the wire and the string are related to the material since metal is a better thermal conductor of heat. This phenomenon can be used in a unit on the particle model and state change. It can also be used to compare the thermal conductivity of different materials.
Description: An Earthship is a passive solar house that is designed to be off the electrical grid. It is generally constructed with natural and recycled materials. Much of the structure of the house is made with recycled tires that are filled with dirt. Thermal mass from the dirt, solar energy from the Sun, and cross-ventilation are used to keep the temperature within the house in a comfortable zone. This phenomenon can be used study thermal energy transfer, energy conservation, and human sustainability.
Description: As ocean water freezes into solid ice the remaining saltwater forms into icy "stalactites" that descend into the ocean. This can be used as a phenomenon in an elementary class to show changes in state. In middle and high school the chemistry can be explored more deeply.