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Life After 1

vocab static electricity and energy sources

QuestionAnswer
build up of an excess charge in an object static electricity
electricity is transferred but not destroyed law of conservation of charge
electrons surrounding an object electric field
electrons can move freely in this type of object conductor
electrons cannot move easily in this type of object insulator
a transfer of charge by touching charge by contact
rearrange electrons in an object without touching charge by induction
connecting an electric object to the earth grounding
repel means that ________ charges move apart like
attract means that _______ charges move together opposite
device used to measure static electricity electroscope
positively charged particle in atom's nucleus proton
negatively charged particle outside of atom's nucleus electron
the energy stored up in an object's position or chemical bonds potential energy
the energy of an object's motion kinetic energy
the ability to cause change or do work energy
fuel formed naturally from the remains of ancient organisms fossil fuel
electricity generated by moving water hydroelectric
solar panels are made up of these photovoltaic cells
two layers of semiconductors in a solar cell differ in the amount of _____ each has electrons
the blades of a wind turbine turn the ___ to create electricity generator
speed of sound in air: 347 m/s
speed of light in air 300,000,000 m/s
in ____ years our supply of oil and natural gas may run out 60
in ____ years our supply of coal may be depleted 200
uneven heating and cooling of the earth's surface causes: wind
the plants and the energy they store from photosynthesis biomass
___% of the world's energy supply comes from biomass or bio energy 15
the heat stored inside the planet geothermal
a waste product (exhaust) of using hydrogen fuel is: water/steam
Created by: Mrs. Bridgman
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