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32 Cards in this Set
- Front
- Back
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Energy (4)
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- ability to do work
- hear as sound - see as light - feel as wind |
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Types of Energy (5)
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- mechanical
- heat - chemical - electromagnetic - nuclear |
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Mechanical Energy (3)
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- energy associated w/ motion
ex - water in a waterfall - blood flowing through blood vessels |
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Heat Energy (3)
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- internal motion of atoms
- causes changes in temp & phase ex - causes ice cream cone to melt and drip down in your hand |
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Chemical Energy (3)
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- energy that bonds atoms/ions together, when bonds broken, energy is released
ex - start a fire - digest food |
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Electromagnetic (3)
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- energy associated w/ moving charges
ex - light - power lines carry electromagnetic energy |
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Nuclear Energy (3)
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- energy found in nucleus of an atom
ex - sun's energy - nuclear power plant |
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Kinetic Energy (3)
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- energy of motion
- faster an object moves, more kinetic energy it has - if mass of an object increases so does its kinetic energy |
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Potential Energy (2)
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- energy of position
- energy is stored energy acquired by work done on object |
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Gravitational Potential Energy
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- potential energy that is dependant on height
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Energy Conversions (3)
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- potential to kinetic
- kinetic to potential - all form of energy can be converted into other forms |
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Law of Conservation of Energy (2)
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- energy cannot be created/destroyed by ordinary means
- it is transformed from one form to another and in the process, the total energy of system is conserved |
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Force (2)
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- push/pull that gives energy to an object
- can make objects move, stop moving, or change direction |
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Unbalanced Forces
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- cause objects to move
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Balanced Forces
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- no movement occurs
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Friction (3)
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- force that acts in a direction opp to moving force
- will cause object to slow down/stop ex - ice skating |
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Newton's 1st Law (2)
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- object at rest will stay at rest
- object in motion will remain in motion at constant velocity unless acted on by an unbalanced force |
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Inertia
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- prop of matter that tends to resist any change in motion
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Newton's 2nd Law (2)
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- shows how force, mass, and acceleration are related
Force = Mass x Acceleration |
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Newton's 3rd Law (2)
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- for every action, there is an equal & opp reaction
ex - Newton's Cradle |
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Gravity (3)
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- force of attraction between objects due to their mass
- acceleration of a falling object is due to force of gravity between object & earth rate = 9.8 m/sec |
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Mass (2)
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- amount of matter in an object/ amount of space an object takes up
- constant |
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Weight (2)
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- measure of force of gravity on an object's mass
- not constant, can change depending on gravity |
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Energy appears in many...
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forms
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Energy is measured in...
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joules
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Energy associated w/motion is called...
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mechanical energy
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An object gains energy when...
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a force acts upon them
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The internal motion of atoms is called...
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heat energy
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Nuclear energy is released when...
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nucleus of atom splits
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Light & electricity are forms of...
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electromagnetic energy
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When atomic bonds are broken, _______________ is released.
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chemical energy
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Sound is a type of __________ energy.
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mechanical
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