describing or showing that heat can be produced in many ways (e.g. electricity, friction, burning).
Energy is necessary for change to occur in matter. Energy can be stored, transferred, and transformed, but cannot be destroyed.
Given a specific example or illustration (e.g., simple closed circuit, rubbing hands together), predict the observable effects of energy (i.e., light bulb lights, a bell rings, hands warm up (e.g., a test item might ask, “what will happen when…?”).