Use a flashlight to demonstrate the effect on shadows of changes in the location of light sources. Illustrate the relative positions of the sun, moon, and planets. Trace the sources of earth's heat and light energy to the sun. Describe earth's rotation on its axis and its revolution around the sun. Explore the relationship between the earth and its moon.
Energy takes many forms which can exert forces and do work.
The conversion of energy from one form to another offers useful applications and sometimes presents problems. Demonstrate an understanding that the sun gives off light and heat energy. Explain why living things need energy. Explain ways different forms of energy can be produced. Develop a variety of ways to describe the motion of an object.