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8th Unit 4 set C
Force and Motion Key Terms
Term | Definition |
---|---|
Weight | an object’s mass multiplied by the gravitational force acting upon it. |
Force Formula | force equals mass times acceleration (F=ma) |
Rate of acceleration due to Gravity on earth | 9.81 meters per second squared |
Mental models | models that are constructed and simulated within a conscious mind. |
Physical models | models that can be looked at, touched, and measured. |
Conceptual models | describe systems and how they work |
Graphic models | show the relationship between two variables on a graph so that the relationship is easily seen and understood. |
gravitational potential energy | the stored energy of an object due to its position relative to a reference point on Earth |
conservative force | forces that cause energy to be converted into forms that be easily regained; examples are gravity, the electrostatic force, and the spring force. |
non-conservative force | forces that cause energy to be converted into forms that cannot be easily regained; examples are friction and air resistance. |
electrostatic force | the attraction and repulsion of particles based on their electrical charges |
induction | charging a neutral object by bringing a charged object close to but not touching the object. |
insulator | material that resists the movement of charge |
conductor | a material across which electrons can easily travel |