science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what are the renewable resources? | solar enjegy, wind, thermal enegy, hydropower, geothermal
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| what are the non-renewable resources? | oil, gas, coal, patrolium, natural gas
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| what are fossil fuels? | a nonrenewable resource formed from the remains of organisms that lived long ago
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| what are the energy forms? | thermal, sound, nuclear, mechanical, chemical, electrical, light
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| what are the energy states? | potential, kinetic
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| what is friction? | the property that causes objects to resist being moved across each other
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| what are four factors of friction? | soft materials, larger surfaces, rough surfaces, high pressure
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| what is the work calculation? | force x distance= work
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| what is a closed system ? | a group of objects that transfer enegy only to each other
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| what is the law of concervation of energy? | energy cannot be created nor destroyed
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| what is a wave? | a disturbance that transfers energy from place to place
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| what is a mechanical wave? | a wave that requires a medium through which to travel
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| what are transverse waves? | waves that move the medium at right angles to the direction in which the waves are traveling
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| what is a crest? | the highest part of a transverse wave
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| what is a trough ? | the lowest part of a transverse wave
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| what is a longitudinal wvae? | a wave that moves the particles of a medium parallel to the direction in which waves are traveling
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| what is a medium? | the material through which a wave travels
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| what is amplitude? | the maximum distance the particles of the medium carrying a wave move away from their rest position
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| what is wave length ? | the distance between tw correspodning parts of a wave
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| what is frequency? | the numbers of complete waves that pass a given point in a certain amount of time
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| what is electromagnetic waves? | a form of radient energy
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| what is the calculation for speed? | distance divided by time=speed
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| what is pitch? | the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone
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| what is vibration? | an instance of vibrating.
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| what is vacuum? |
a space entirely devoid of matter.
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| what is an open system? |
a material system in which mass or energy can be lost to or gained from the environment.
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| what is a newton? | .
the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one meter per second per second, and is equivalent to 100,000 dynes.
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| what is force? | strength or energy as an attribute of physical action or movement
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