matter and energy ch. 3
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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| engergy changes ___________. | forms
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| the __________ is the indirect source for almost all of the Earth's energy. | Sun
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| _________ are burned for electrical energy or heat. | fossil fuels
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| a measurement of usable enrgy after an energy conversion | energy efficiency
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| the more energy efficient a fan or appliance is, the more electrical energy it turns into _______ | kinetic energy
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| _______ are used to make care run more efficiently | fuel injector
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| ___________ are made of several layers of light | solar cells
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| ___________ convert sunlight into electrical energy | solar energy
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| __________ is expensive to make and requires constant sunlight | solar energy
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| ________ used to generate electrical engergy | wind energy
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| ________ take up a lot of space and need a constant supply of wind | wind energy
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| _________ is used to sail ships, to grind grain, and pump water | wind energy
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| ___________ exists in different forms | energy
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| _________ has different forms, but is always conserved | energy
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| _________ improves the ways people use energy | technology
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| ___________ may produce unwanted forms of energy | energy conversions
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| _________ can exist in different physical states | matter
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| ____________ results from the vibration of particles in solid, liquid, or gas and we detect it as vibrations in our ears | sound energy
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| when wood or gasoline burns, the ________ produces heat | chemical energy
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| ___________ is hte energy that moves objects | mechanical energy
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| put a book on bookshelf | mechanical energy
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| playing an instrument | sound energy
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| wood burning | chemical energy
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| moving molecules | thermal energy
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| x-rays | electromagnetic energy
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| center of nucleus and sun | nuclear energy
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| ________ depends on an objects mass and the speed at which the object is moving | kinetic energy
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| energy of motion | kinetic energy
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| __________ is the stored energy that an object has due to its position or chemical position | potential energy
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| most obvious form of _______ results from gravity | potential energy
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| ___________ is an electric cell that produces current | battery
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| ___________ must be either recharged or replaced as their stored energy is used | batteries
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| ___________ is a group of solar cells forming a flat surface | solar panel
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| cells of a ______ convert sunlight into electrical energy | solar panel
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| ____ is getting the most work from available energy | energy efficiency
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| __________ is the law that states energy is never gained or lost, but is only changed in form | conservation of energy
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| the most obvious form of this is when it results from gravity | potential energy
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| an object can fall and release energy stored by its position | potential energy
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| electrical energy from this is used to provide the energy for such things as satelellites, hand held calculators, and experimental cars | energy efficiency
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| conversion of a greater percentage of energy into a desired form of energy | solar cell
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| why a bowling ball has more of this because its mass is greater than that of a soccer ball | kinetic energy
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| scientists use this to classify many different forms, such as mechanical, chemcial, thermal, electromagnetic, and nuclear | energy
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| _____ is the ability to cause change | energy
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| ____ is the energy motion; a moving object has the most of this at point where it moves the fastest | kinetic energy
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| ________ is stored energy or the energy an object has due to its position or chemical position | potential energy
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| states that no matter how energy is tranferred or transformed it can neither be created or destroyed | law of conservation
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| __________ is a measurement of usable energy after an energy conversion | energy efficient
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| ___ is the ratio of usable energy to the total energy after and energy conversion | energy efficiency
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| ______ is a type of technology in which light sensitive materials convert sunlight into electrical energy | solar cell
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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