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integrated exam s.1
| Term | Definition |
|---|---|
| pure science | Research done out of curiosity |
| applied science | a form of science that solves real-world problems |
| hypothesis | testable guess |
| theory | well-tested explanation |
| law | a statement or equation that predicts events |
| control | standard for comparison |
| variable | A factor that can change in an experiment |
| independent variable | variable that is manipulated (I manipulate it) |
| dependent variable | the variable that changes in response to the independent variable |
| meniscus | The curved upper surface of a liquid in a tube |
| distance | The length of a path between two points |
| displacement | the change in position of an object (starting point to ending point) |
| vector | A quantity that has magnitude and direction |
| acceleration | rate of change of velocity |
| speed | distance/time |
| instantaneous speed | the speed of an object at one instant of time |
| average speed | total distance divided by total time |
| velocity | Speed in a given direction |
| frame of reference | conditions specified to study |
| free fall | the motion of a falling object when the only force acting on it is gravity |
| relative motion | movement in relation to a frame of reference |
| magnitude | size |
| line of best fit | a line drawn in a scatter plot to fit most of the dots and shows the relationship between the two sets of data |
| inertia | resistance to change in motion |
| force | A push or a pull |
| momentum | mass x velocity |
| elastic collision | A collision in which colliding objects rebound |
| inelastic collision | objects hit and stick together |
| friction | A force that opposes motion between two surfaces that are in contact |
| mass | amount of stuff |
| weight | mass under the influence of gravity |
| gravity | A force of attraction between objects that is due to their masses and distance |
| Newton | unit of force |
| Isaac Newton | Defined the laws of motion and gravity. Tried to explain motion of the universe. |
| pressure | Force per unit area. |
| Newton | kg*m/s^2 |
| Pascal | SI unit of pressure |
| fluid | A substance that flows |
| atmospheric pressure | the pressure caused by the weight of the atmosphere |
| hydraulics | The use of a liquid flowing under pressure to transmit power from one location to another. |
| Bernoulli's Principle | fast flow |
| lift | an upward force in a fluid |
| Buoyancy | Fluids exert an upward force on an object |
| Archimedes' Principle | the buoyant force on an object is equal to the weight of the fluid displaced by the object |
| pressure differential | difference between pressures on two sides of a divider |
| Work | force x distance |
| Power | work/time |
| energy | the ability to do work |
| Joule | SI unit of energy (1 Newton meter) |
| Watt | SI unit of power 1J/sec |
| energy conversion | A change from one form of energy to another |
| Law of Conservation of Energy | Energy cannot be created or destroyed, but it moves around |
| potential energy | stored energy that results from the position or shape of an object |
| kinetic energy | energy of motion |
| conclusion | the part of a lab report where you report if your data matches your hypothesis |
| Discussion | the part of a lab report where you tell what your lab means for the future |
| density | mass/volume |
| volume | The amount of space an object takes up (lxwxh) |
| law of conservation of momentum | law stating that the total momentum of a system does not change if no net force acts on the system |
| gravity | 9.81m/sec^2 |
Created by:
nedzelk
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