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PS Sc. Review I.D.
Vocab.
| Question | Answer |
|---|---|
| A variable whose value depends on that of another. | Dependent Variable |
| A variable whose variation does not depend on that of another. | Independent Variable |
| A situation or state of affairs that does not change. | Constant |
| The power to influence or direct people's behavior or the course of events. | Control |
| Explanation of things or events that is based on knowledge gained from many observations and investigations. | 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 |
| Make a way through or into by physical strength; break open by force. | Force |
| Resistance of an object to change in its motion. | Inertia |
| The speed of something in a given direction. | Velocity |
| a body remains at rest or in motion with a constant velocity unless acted upon by an external force. | Newton’s 1st Law of Motion |
| States that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by the mass. | Newton’s 2nd Law of Motion |
| States that when one object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction. | Newton’s 3rd Law of Motion |
| The resistance that one surface or object encounters when moving over another. The action of one surface or object rubbing against another. | Friction |
| Energy that a body possesses by virtue of being in motion. | Kinetic Energy |
| The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors. | 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-lever, pulley, wheel and axle, inclined plane, screw, and wedge. | 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 a percentage. | Efficiency |
| Ratio of the output force exerted by a machine to the input force applied to the machine. | Mechanical Advantage |
| Transfer of thermal energy by collisions between particles in matter at a higher temperature and particles in matter at a lower temperature. | 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 in which electrons are not able to move easily; material in which heat flows slowly. | Insulator |
| Material, such as copper wire, in which electrons can move easily. | Conductor |
| Measure of the average kinetic energy of all the particles in an object. | Temperature |
| (m) | Length |
| (kg) | Mass |
| (m3) | Volume |
| (g/cm3) | Density |
| (J) | Work |
| (J) | Energy |
| (N) | Force |
| (s=d/t) | Speed |
| (m/s2) | Acceleration |
| seconds (s) | Time |
| Kelvin (K) | Temperature |
| Distance an object travels per unit of time. | Speed |
| State the problem, gather information, form a hypothesis, test the hypothesis, analyze data, and draw conclusion | Steps of the Scientific Method |
Created by:
Noemi716
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