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30 Cards in this Set
- Front
- Back
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Energy |
the ability to cause a change.
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Kinetic Energy |
the energy an object has because itis in motion.
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Potential Energy |
stored energy that depends on the interaction of objects,particles, or atoms
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Electrical Energy |
The energy that an electric current carries
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Chemical Energy |
energy that is stored in andreleased from the bonds between atoms.
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Nuclear Energy |
energy stored in andreleased from the nucleus of an atom.
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Mechanical Energy |
The sum of potential energy and kinetic energy in a system ofobjects
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Thermal Energy |
the sum of the kinetic energy andpotential energy of the particles that make up an object
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Geothermal Energy |
The particles in Earth’s interior contain great amountsof thermal energy.
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Sound Energy |
energy carried by sound waves
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Seismic Energy |
the energy transferredby waves moving through the ground.
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Radiant Energy |
energy carried by electromagnetic waves
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Gravitational Potential Energy |
potentialenergy stored in an object due to its height above Earth’ssurface
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Energy Transformation |
the conversion of one form of energy toanother
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Nuclear Fission |
The breaking apart of atoms |
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Nuclear Fusion |
Atoms bonding together |
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Law of Conservation of Energy |
energy can be transformed from one form to another, but it cannot becreated or destroyed
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Work |
thetransfer of energy that occurs when a force makes an object move in thedirection of the force while the force acts on the object.
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Work Equation
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work (in joules) = force (in newtons) × distance (in meters)
W = Fd |
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Waste Energy |
Thermal energy created by friction
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Simple Machines |
machines thatdo work using one movement.
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Inclined Plane |
a flat, sloped surface.
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Screw |
an inclined plane wrapped around acylinder
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Wedge |
an inclined plane that moves
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Lever |
a simplemachine that pivots around a fixed point
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Wheel and Axle |
a shaft attached to a wheel of a largerdiameter so that both rotate together
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Pulley |
a grooved wheelwith a rope or cable wrapped around it
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Complex Machines |
Two or more simple machines working together
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Efficiency |
the ratio of output work to input work.
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Efficiency Equation |
efficiency (in %) = output work (in J)/input work (in J) x 100% = W.out/W.in x 100% |
