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Semester1review
| Question | Answer |
|---|---|
| factor that changes as a result of changes in the other variables. | Dependent Variable- |
| factor that as it changes affects The measure of another variable. | Independent Variable |
| in an experiment,a variable that does not change when other variables changes. | Constant |
| standard used for comparison of test results in an experiment. | Control |
| explanation of things or events that is based on knowledge gained from many observations and investigation. | Theory |
| statement about what happens in nature that seems to be true all the time;does not explain why or how something happens. | Scientific Law |
| rate of change of velocity;can be calculated by dividing the change in the velocity by the time it takes the change to occur. | Acceleration |
| a push or pull exerted on an object. | Force |
| resistance of an object to a change in its motion. | Inertia |
| the speed and direction of a moving object. | Velocity |
| distance an object travels per unit of time. | Speed |
| an object moving at a constant velocity keeps moving at that velocity unless an unbalanced net force acts on it. | Newton’s 1st Law of Motion |
| that the acceleration of an object is in the same direction as the net force on the object. | Newton’s 2nd Law of Motion |
| when one object exerts a force on a second object,the second one exerts a force on the first that is equal in strength and opposite in direction. | Newton’s 3rd Law of Motion |
| force that opposes the sliding motion between two touching surfaces. | Friction |
| energy a moving object has because of its motion. | Kinetic Energy |
| stored energy an object had due to its position. | Potential Energy |
| states that energy can never be created or destroyed. | Law of Conservation of Energy |
| sum of the potential energy and kinetic energy in a system. | Mechanical Energy |
| machine that does work with only one movement. | Simple Machine |
| machine that is a combination of two or more simple machines. | Compound Machine |
| ratio of the output work done by the machine to the input work done on the machine expressed as percentage. | Efficiency |
| ratio of the output force exerted by a machine to the input force applied to the machine. | Mechanical Advantage |
| material such as coppper wire,in which electrons can move easily. | Conduction |
| transfer of thermal energy in a fluid by the movement of warmer and cooler fluid from one place to another. | Convection |
| transfer of thermal energy by electromagnetic waves. | Radiation |
| thermal energy that flows from a warmer material to a cooler material. | Heat |
| material iun which heat flows slowly. | Insulator |
| material in which heat flows quickly. | Conductor |
| measure of the average kinetic energy of all the particles in an object. | Temperature |
| meter | Length |
| kilogram | Mass |
| cubic meter | Volume |
| kilogram per cubic meter. | Density |
| joule | Work |
| watt | Energy |
| Force | |
| Speed | |
| Acceleration | |
| Time | |
| Temperature |
Created by:
billybobthebob
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