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Category 2 Vocab Rvw
A review of the terms for physical science portion of the STAAR
| Term | Definition |
|---|---|
| potential energy | The mechanical energy that a body has by virtue of its position; stored energy |
| kinetic energy | The mechanical energy that a body has by virtue of its motion |
| Law of Conservation of Energy | The fundamental principle of physics that the total energy of an isolated system is constant despite internal changes |
| radiant energy | Energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter |
| electrical energy | energy made available by the flow of electric charge through a conductor |
| chemical energy | Part of the energy in a substance that can be released by a chemical reaction |
| Thermal energy | The internal energy of a system in thermodynamic equilibrium due to its temperature |
| mechanical energy | Type of energy that makes objects move. |
| renewable energy resources | Energy resources that are naturally replenishing but flow-limited. They are virtually inexhaustible in duration but limited in the amount of energy that is available per unit of time. Ex: Solar, wind |
| nonrenewable energy resources | Energy resources that cannot be replaced in a lifetime. Ex: fossil fuels |
| sun | The source of all the energy on Earth |
| force | A dynamic influence that changes a body from a state of rest to one of motion or changes its rate of motion. |
| Balanced force | Object does not move or moves at a constant unchanging rate when forces are this |
| Unbalanced forces | Object changes its velocity when forces are this |
| Acceleration | A change in velocity or the speed and/or direction of an object |
| Inertia | the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force. A property of matter |
| Net force | 1.the combination of all the forces that act on an object. |
| Speed | How fast something is moving |
| Velocity | How fast and in what direction an object is moving |
| Gravity | the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface |
| Joule | Unit used to measure work |
| Work | the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force |
| Newtons | Unit used to measure force |
Created by:
McLeanScience
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