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