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Force&Motion
For science class
| Question | Answer |
|---|---|
| What does acceleration mean? | The rate at which velocity changes. |
| What does Air Resistance mean? | The fluid friction experienced by objects falling through the air. |
| What is Archimedes' principle? | The rule that the buoyant force on an object is equal to the weight of the fluid the object displaces. |
| What is average speed? | The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time. |
| What are balanced forces? | Equal forces action on an object in opposite directions. |
| What is Bernoulli's principle? | The rule that a stream of fast moving fluid exerts less pressure than the surrounding fluid. |
| What is buoyant force? | The upward force exerted by a fluid on a submerged object. |
| What is centripetal force? | A force that causes an object to move in a circle. |
| What is a compound machine? | A device that combines two or more simple machines. |
| What does efficiency mean? | The percent of the input work that is converted to output work. |
| What does fluid mean? | A material that can easily flow. |
| What is fluid friction? | Friction that occurs as an object moves through a fluid. |
| What is force? | A push or pull exerted on an object. |
| What is friction? | The force that one surface exerts on another surface when the two surfaces rub against each other. |
| What is a fulcrum? | The fixed point around which a lever pivots. |
| What is gravity? | The force that pulls objects toward each other. |
| What is an inclined plane? | A simple machine that is a flat, sloped surface. |
| What is inertia? | The tendency of an object to resist any change in its motion |
| What is a lever? | A simple machine that consists of a rigid bar that pivots about a fixed point. |
| What is a machine? | A device that changes the amount of force exerted, the distance over which a force is exerted, or the direction in which force is exerted. |
| What is mass? | The amount of matter in an object. |
| What is mechanical advantage? | The number of times a machine increases a force exerted on it. |
| What is momentum? | The product of an object's mass and velocity. |
| What is motion? | The state in which one object's distance from another is changing. |
| What is net force? | The overall force on an object when all the individual forces acting on it are added together. |
| What is the definition of newton? | A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second. |
| What is the definition of pascal? | A unit of pressure equal to one newton per square meter. |
| What is Pascal's principle? | The rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the liquid. |
| What is power? | The rate at which work is done. |
| What is a pulley? | A simple machine that consists of a grooved wheel with a rope or cable wrapped around it. |
| What is a reference point? | A place or object used for comparison to determine if the object is in motion. |
Created by:
LoveFallsLikeRayne
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