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Category 2 Vocab Rvw

A review of the terms for physical science portion of the STAAR

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