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32 Cards in this Set
- Front
- Back
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___________________ is the ability to do work
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Energy
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_________________ is energy of motion
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Kinetic Energy
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Energy is measured in ____________________
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Joules (J)
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Potential energy is _______________ and _______________
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stored energy
energy at rest |
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Give examples of Potential energy
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battery, gasoline, objects that could fall
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potential energy =
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mass X gravity X height
PE=mgh |
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What is the law of Conservation of energy
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Energy cannot be create or destroyed but it can change forms.
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Give example of conservation of energy
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May become heat or another form of energy
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Total Energy before action =
_____________________________ |
total energy after action
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energy from teh sun (light, uv rays, xray, infrared, etc)
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radiant
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vibrations traveling through the matter
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sound
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objects that are moving (kinetic) or that could move (potential)
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mechanical
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motion of particles in matter thought of as heat
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thermal
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energy is stored in food or other chemicals
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chemical
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flow of electrons
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electrical
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from magnetic fields (attractive and replusive forces)
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magnetic
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from nucleus of atoms; fisson or fusion
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nuclear
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Describe nuclear energy
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very powerful
e=mc2 |
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______________measures the quanity of motion
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momentum
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what it the equation for momentum
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P=mv P is momentum
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gtreater measure/greater velocity means ____________________
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greater momentum
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____________ transports energy through a vacuum (radiation)
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Light
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________ exerts a force on the object it hits
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Light
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Scientists are developing _____________ ____________ using _______ ________.
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solar sailing
light momentum |
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Objects transfer _____________ when they collide
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momentum
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total movement before collision = _____________________
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total movement after collision
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Give examples of conservation of momentum
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rifle kicks back when it fires a bullet. fule pushed out backward propel the jet forward. the cue ball puts other balls in motion
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PE =
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PE=mgh
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KE=
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KE=1/2mv2
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E=
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E=mc2
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P=
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P=MV
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500kgX300m/s=
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150,000kgm/s
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