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44 Cards in this Set
- Front
- Back
Energy
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The ability to cause change or do work
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Kinetic Energy
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energy in motion
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Potential Energy
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stored energy that depends on the relationship of objects with respect to one another
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Mechanical Energy
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the combination of kinetic energy and potential energy in a system
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Chemical Energy
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potential energy stored in the chemical bonds of molecules
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Law of Conservation of Energy
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states that energy cannot be created or destroyed, it can only change forms
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Thermal Energy
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heat energy
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Sounds Energy
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a type of mechanical energy that travels as vibrations through matter
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Electrical Energy
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is the energy of moving electrons
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Light Energy
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one type of the electromagnetic spectrum
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Force
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a push or pull
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Newton
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the unit of measurement for the magnitude of a force
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Balanced Force
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a force on an object that does not change the motion of the object
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Unbalanced Force
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a force on an object that does change the motion of an object
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Net Force
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the sum of all forces that are acting on an object
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Gravitational Force
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the force put on all objects, weight is a measurement of this
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Acceleration
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the rate of change in velocity (change in speed or direction of an object)
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Inertia
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the tendency of an object at rest to remain at rest and the tendency of an object in motion to remain in motion at a constant velocity, unless a for acts upon it
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Friction
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the force between objects that works against their movement past each other
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Work
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the transfer of energy to an object when a force on the object causes the object to move in the direction of the force
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Machine
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a device that can make work easier by changing the size and direction of an applied force
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Mechanical Advantage
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the ratio of the resistance force to the effort force
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Lever
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a straight rod or board that picot on a fixed point, fulcrum
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Inclined
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a sloping surface
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Pulley
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a wheel with a groove around the outside edge
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Wheel and Axel
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has a larger wheel with a smaller cylinder, or axel, passing through its center
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Solar Energy
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energy from the sun, radiant
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Electromagnetic Waves
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waves produced by the motion of electrically charged particles, travel through matter and space
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Electromagnetic Spectrum
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the arrangement of the different wavelengths of the electromagnetic waves from the longest wavelengths to the shortest
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Wavelength
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the distance from the crest of one wave to the crest of the next
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Frequency
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the number of wave crest that pass one place each second
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Radio Waves
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long and low frequencies
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Infrared Waves
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longer than radio, gives earth “heat”
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Visible light Waves
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the only part of the electromagnetic spectrum you can see, all colors of light
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Ultraviolet Waves
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damage healthy skin, cause sun burns, and can help your skin to produce vitamin D,
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Radar
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uses short wavelength microwaves to locate objects
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Waves
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can transmit energy through matter and space, examples water, sound, light
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Transverse Waves
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a wave that has vibrations perpendicular to the direction in which the waves move
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Longitudinal Waves
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a wave in which the particles vibrate parallel to the direction the wave is traveling
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Reflection
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the bouncing back of a wave after it hits an object
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Diffraction
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the bending of a wave around an object
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Refraction
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the bending of a wave when it passes from one medium to another at an angle
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Absorption
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when sound or light waves are absorbed by matter
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Prism
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a triangular glass that refracts the light twice, once when it enters and once when it leaves
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