In addition, Standards and Benchmarks have been added to each classroom connector in compliance with the concept initiated in the 1997 Tennessee Science Curriculum Framework . And Forces The motion of an object can be described by its position, direction of motion, and speed. This motion can be represented on a graph. An object that is not being subjected to a force will continue to move at a constant speed and in a straight line. If more than one force acts on an object, then the forces can reinforce or cancel one another, depending on their direction and magnitude.
Magnets are either natural or man-made.
NSES Content Standard Physical Science 6-8 NSES Content Topic Tranformations Of Energy Energy exists in many forms, including heat, light, chemical, nuclear, mechanical and electrical. Energy can be transformed from one form to another. Heat energy moves in predictable ways, flowing from warmer objects to cooler ones until both objects are at the same temperature. Electrical circuits provide a means of converting electrical energy into heat, light, sound, chemical or other forms of energy. The sun is a major source of energy for changes on the Earth's surface.