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Science unit 2 (Kinetic energy=energy of motion mechanical energy=sum of…
Science unit 2
Kinetic energy=energy of motion mechanical energy=sum of the energy of motion and energy of position potential energy=energy of position
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kinetic theory of matter=all the particles that make up matter are always in motion temp.=measure of the average kinetic energy of all the particles in an object degrees=equally spaced units between 2 points thermometer=instument that measures tempature
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a basketball that is balanced on the rim of a basketball hoop has potential energy and the basketball that is rolling across the floor has kinetic energy
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if a puddle of water is frozen do particles in the ice have kinetic energy = Yes, because everything has kinetic energy no matter what state its in
describe the relationship between temp. and kinetic energy = both temp. and kinetic energy both relate to the particles movement and their movement in different situations
thermal energy=total energy of all particles in a substance heat=energy transferred from an object to at a higher temp. to an object at a lower temp. calorie=equal to the amount of energy needed to raise the temp. conduction=transfer of energy as heat from one substance to another through direct contact conductor=material that transfer heat very well insulator=material that is a poor conductor of heat Convection=transfer of energy as heat by the movement of a liquid or gas radiation=transfer of energy by electromagnetic waves
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temp. and thermal energy are different from each other because because temp. is related to the average kinetic energy of particles while thermal energy is the total kinetic energy of all the particles
renewable resource=can be easily reproduced or replaced by nature( grow back in short time) nonrenewable resource=cannot be produced or restored as fast fossil fuels=resource made from carbon-rich plant and fossil remains
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fossil fuels include petroleum, coal and natural gas
how might a renewable resource become nonrenewable=if we have a drought all the water will become renewable