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### 12 Cards in this Set

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 CAN MOTION BE MEASURED Yes. To know what an object's speed is you need to know how far the object moves each second, minute or hour. WHAT IS FORCE? A push or pull. It can change the motion of an object. It can move something that is standing still. WHAT IS GRAVITY? The force that pulls objects toward the center of the earth. It can make leaves fall to the ground. KINETIC ENERGY IS? ENERGY OF MOTION. THE FASTER AN OBJECT MOVES THE MORE OF THIS ENERGY IT HAS. WHAT IS WORK? WHEN A FORCE MAKES SOMETHING MOVE. THE MORE FORCE YOU USE TO MOVE SOMETHING A CERTAIN DISTANCE, THE MORE WORK YOU DO. WHAT IS FRICTION? A force that slows down or stops moving objects. On smooth surfaces, it is less than on rough surfaces. WHAT IS INERTIA? The tendency of an object to stay in motion or to stay still. Unless a force acts on an object the still object will remain still or a moving object will remain moving. WHAT IS FRICTION? A force that slows down or stops moving objects. On smooth surfaces, it is less than on rough surfaces. WHAT IS CHEMICAL ENERGY? ENERGY THAT RESULTS FROM CHEMICAL CHANGES. WHAT IS ENERGY? THE ABILITY TO DO WORK. ANYTHING THAT DOES WORK USES THIS. WHAT IS MECHANICAL ENERGY? THE ENERGY AN OBJECT GETS FROM ITS MOTION. P0TENTIAL ENERGY IS? STORED ENERGY. ALL OBJECTS CAN HAVE KINETIC AND POTENTIAL ENERGY.