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44 Cards in this Set

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