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13 Chapter 13 energy
Energy transformations and energy conversions.
| Question | Answer |
|---|---|
| energy | The ability to do work or cause either a physical or chemical change is called ______ |
| transferred | When an object or living thing does work on another object, some of its energy is ____ to that object. |
| power | If the transfer of energy is work, then ___ power is the rate at which energy is transferred or the amount of energy transferred in a unit of time. |
| watt | Power is measured in what? Exactly! |
| kinetic energy | The energy an object has due to its motion is called ____. |
| double, quadruple | since kinetic energy = 1/2 x Mass x (velocity squared), if I double the mass I ___ the kinetic energy and if I double the speed, I ___ the kinetic energy. |
| potential energy | The energy that results from the position or shape of an object is called ____ which has the ability to do work. |
| gravitational | The potential energy related to an objects height is called ___. |
| eleastic | The potential energy associated with objects that can be stretched or compressed is called ___. |
| mechanical | The form of energy that has both potential and kinetic energy (throwing a football) is called ____. The total is 100%. |
| chemical bonds | Chemical energy is energy stored due to ____ which binds atoms into molecules. |
| inverse | If the total mechanical energy is 100% the amount of potential energy is ___ to the amount of kinetic energy. If one goes up the other has to go down to maintain 100%. |
| particles | Forms of energy associated with the ______ of objects include thermal energy, electrical energy, chemical energy, nuclear energy, and electromagnetic energy. |
| thermal energy | The TOTAL potential and kinetic energy of the particles in an object is called ____. |
| Temperature | The AVERAGE kinetic energy of the particles in an object is called ____ |
| electrical energy | The energy of electric charges moving or stored. It can be kinetic ( or if stored potential energy (static electricity) |
| nuclear energy | A type of potential energy stored in the nucleus of an atom. |
| electromagnetic energy (EM) | The sunlight that you see each day is ____ that travels in waves from the sun. It has electrical and magnetic properties. The EM for EMpty - only form of energy that can travel without matter through empty outerspace. |
| energy transformation | A change from one form of energy to another is called an _____. |
| multiple | Striking a match is an example of ___ energy transformations - the mechanical energy of moving the match produces a friction force that produces thermal energy that starts a chemical reaction on the match producing light, heat and an odor. |
| lowest | Since total energy is 100%, if an object is at its ___ point, it has the least potential energy, and must therefore have the most kinetic energy or greatest speed. |
| highest | Since total energy is 100%, at it's highest point the object has the most potential energy and the least kinetic energy, therefore it is at its slowest speed. |
| law of conservation | The ___ of energy means the total energy does not change it changes forms. The ___ of matter means the total number and type of atoms does not change, it just changes forms. |
| conservation | means the total does not change. |
| matter | matter is anything that has mass and takes up space. |
Created by:
aubiefan
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