Physical Science A units Properties of objects and materials, Position and motion of objects, Light, Heat, Electricity, and Magnetism. The position of the object can be described by locating it relative to another object. An object's motion can be described by its position over time. The position and motion of objects can be changed by pushing or pulling. Sound is produced by vibrating objects.
Light travels until it strikes an object.
Heat can be produced in many ways. Heat can move from one object to another, from the sun to the earth and to people. The sun provides the light and heat necessary to maintain the temperature of the earth. The surface of the earth changes. Weather changes from day to day and over the seasons Objects in the sky have patterns of movement.