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Unit 2
Relationships Among Forms of Energy
| Question | Answer |
|---|---|
| A form of potential energy stored in things such as batteries, food, and fuel | chemical energy |
| Energy caused by the movement of electrons, usually through wires. | electrical energy |
| the ability to do work or cause change | energy |
| the energy an object has due to its motion | kinetic energy |
| States that energy can change its form but is never created or destroyed. | Law of Conservation of Energy |
| energy that is stored | potential energy |
| a form of kinetic energy that our eyes can detect. | light energy |
| Energy found in the motion of atoms and molecules in matter. | thermal energy (heat) |
| Energy caused by vibrations of matter. Travels in waves that we can hear. | sound energy |
| the potential energy of an object that is stretched or compressed | elastic energy |
| a form of potential energy that depends on the height or position of an object | Gravitational Potential Energy (GPE) |
| the unit energy is measured in | joules (j) |
| the speed and direction of a moving object | velocity |
| an object at rest will stay at rest, and an object that is moving will stay moving unless acted upon by an unbalanced force. | Newton's 1st Law of Motion |
| For every action there is an equal and opposite reaction. | Newton's 3rd Law of Motion |
| A measure of the amount of matter in an object | mass |
| A measure of the force of gravity on an object | weight |
| The acceleration of an object depends on the mass of the object and the amount of force applied. f = m x a | Newton's 2nd Law of Motion |
| The tendency of an object to resist a change in motion | inertia |
| A force of attraction between objects that is due to their masses. | gravity |
| The standard unit of measure for force; equals the force required to accelerate 1 kg of mass at 1 meter per second per second | Newton (N) |
| inertia and gravity combine to keep Earth in orbit around the sun and the moon in orbit around Earth. | orbital motion |
| the resistance that one surface or object encounters when moving over another. | friction |
| Forces that produce a nonzero net force, which changes an object's motion | unbalanced force |
| Equal forces acting on an object in opposite directions | balanced force |
| pushes and pulls that result from direct touching of objects (friction, air resistance, and physical contact with an object) | contact forces |
| pushes and pulls that result without the direct touching of objects acting at a distance (gravity and magnetism) | non-contact forces |
| A push or pull exerted on an object that can causes a change in motion | force |
Created by:
gibbonsUMS