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24 Cards in this Set
- Front
- Back
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Energy |
Ability to cause a change; can change speed, direction, shape or temperature of an object.
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Kinetic Energy |
Energy an object has due to its motion |
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Potential Energy |
Energy that is stored due to its position or condition |
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Law of conservation of energy |
States that energy cannot be created or destroyed, but can only be transformed. |
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Balanced Forces |
Describes forces that are equal but opposite in direction, and no change occurs in the object's motion. |
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Unbalanced Forces |
Describes unequal forces acting on an object results in a change in the object's motion in the direction of the larger force. |
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Mechanical Energy |
It's the movement of a substance from one place to another. Wind and hydropower are examples. |
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Gravitational Energy |
It's the energy of a high place or position. Water in a reservoir behind a hydropower dam is an example. |
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Electrical Energy |
It's the movement of electrons. Lightning and electricity are examples. |
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Light Energy |
It's the form of energy that travels in waves and can move through empty space. |
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Thermal Energy |
Or heat, it's the internal energy in substances or movements of atoms and molecules in substances. Geothermal is an example. |
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Chemical Energy |
It's the energy stored in the bonds of atoms and molecules. Biomass, petroleum, natural gas, propane, food, batteries, and coal are examples. |
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Motion |
The change of position of an object. |
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Force |
A push or a pull, the unit is the Newton. |
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Average Speed |
Rate of motion calculated by dividing the distance traveled by the amount of time it takes to travel that distance. |
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Velocity |
Speed of an object and its direction of motion; changes when speed or direction of the object changes. |
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Acceleration |
Change in velocity divided by the amount of time needed for the change to occur, takes place when an object speeds up, slows down, or changes direction. |
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Inertia |
Tendency to resist a change in motion. |
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Work |
Is done when an applied force causes an object to move in the direction of the force. |
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Friction |
Force the resist motion between two touching surfaces and always acts opposite to the direction of the motion. |
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Inclined plane |
Consist of a flat, sloping surface, sometimes called a ramp. Uses less force over a grater distance. |
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Newton's first law |
An object in motion tends to stay in motion, and an object at rest tends to stay at rest, unless the object is acted upon an unbalanced force. |
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Newton's second law |
The acceleration of an object depends on the force acting on the object and the mass of the object. |
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Newton's third law |
Every action has an equal and opposite reaction. |
