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40 Cards in this Set
- Front
- Back
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energy
- the ability to cause __________ |
- change
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Kinetic energy
- the energy an __________ has due to its ________ |
- object
- motion |
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Potential energy
- is the energy stored in an object because of its ___________ |
- position
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Thermal energy
- energy that ________ as its ___________ increases |
- increases
- temperature |
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Chemical energy
- the energy stored in __________ bonds |
- chemical
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Radiant energy
- energy carried by ________ |
- light
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Electrical energy
- the energy that is carried by an ________ __________ |
- electrical
- current |
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Nuclear energy
- energy contained in ________ nuclei |
- atomic
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Laws of conservation of energy
- states that energy can change its ________ but is never _________ or ___________ |
- form
- created - destroyed |
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generator
- a device that transforms ________ energy into __________ energy. |
- kinetic
- electrical |
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turbine
- a set of _______-powered fan blades that spins a __________ at a power plant |
- steam
- generator |
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nonrenewable resource
- energy source that is used up much faster than it can be ________. |
- replaced
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renewable resource
- energy source that is __________continually. |
- replenished
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alternative resources
- new renewable or ___________ energy source: includes _______ energy, wind, and ___________ energy |
- inexhaustible
- solar - geothermal |
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inexhaustible resources
- energy source that __________ be used up by __________ |
- cannot
- humans |
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photovoltaic
- a device that transforms ________ energy into __________ energy - used to power __________ & __________ |
- radiant
- electrical - calculators - satellites |
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Resources that will eventually be used up are _____________.
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- nonrenewable
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A ____________ transforms sublight directly into electricity.
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- photovoltaic
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A _________ is a device that changes kinetic energy into electric energy.
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- generator
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Resources other than fossil fuels used to generate energy are called _____________.
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- alternative
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Energy resources that are continually being replenished are called _____________
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- renewable
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A device with blades that turns a genrator is a ________.
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- turbine
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Know what type of energy is used for each example:
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Flame of a candle
Lamp |
- thermal energy
- radiant & electrical |
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Moving ball
Heated oven |
- kinetic
- thermal |
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Fossil fuels
An airplane taking odd |
- chemical
- kinetic |
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Mug of hot drink
Bonds between protons |
- thermal, potential
- nuclear |
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Wall socket
Electric mixer in use |
- electrical
- kinetic & electrical |
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An object about to fall
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- potential
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Examples of kinetic energy
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- ball rolling
(the more speed = more kinetic energy) |
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Example of potential energy
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- a glass sitting on a table
( energy stored in the object because of its position...the higher up the object is the greater the potential energy - the potential energy changes to kinetic energy as it falls |
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What are fossil fuels?
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- coal
- oil - natural gas |
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Example of potential energy
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- a glass sitting on a table
( energy stored in the object because of its position...the higher up the object is the greater the potential energy - the potential energy changes to kinetic energy as it falls |
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Why is it important to find alternative energy sources?
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- because they may be safer for people and the environment.
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What are fossil fuels?
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- coal
- oil - natural gas |
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Which has more kinetic energy, a feather through the air or a rock on the ground? Explain
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- a feather through the air because it is moving.
- The rock on the ground has no kinetic energy because it isn't moving. |
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Why is it important to find alternative energy sources?
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- because they may be safer for people and the environment.
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Starting with the Sun, what energy transformations take place when cows graze in a meadow?
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Which has more kinetic energy, a feather through the air or a rock on the ground? Explain
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- a feather through the air because it is moving.
- The rock on the ground has no kinetic energy because it isn't moving. |
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Starting with the Sun, what energy transformations take place when cows graze in a meadow?
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