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Chapter 14: Energy
This is a review over chapter 14 in the Physical Science 6th edition textbook.
| Question/Term | Answer/definition |
|---|---|
| —Definitions— | |
| Kinetic Energy | The energy that objects possess due to their motion |
| Potential Energy | Stored energy that can be used later |
| Elastic Potential Energy | Energy stored as a result of applying a force to deform an elastic object |
| Chemical Potential Energy | The energy stored in the chemical bonds of a substance |
| Gravitational Potential Energy | Energy an object possesses because of its position in a gravitational field |
| Mechanical Energy | The sum of any kinetic energy and all the forms of potential energy in a |
| Energy | The ability to do work |
| Efficiency | The ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in |
| Renewable Energy Resource | An energy resource that is easily replaced by natural methods |
| Nonrenewable Energy Resource | An energy resource that is not replaced naturally on a human timescale |
| Nuclear Energy | Energy that is produced by nuclear fission reactions |
| Biomass Energy | Chemical potential energy obtained from renewable organic materials |
| Geothermal Energy | Heat energy that originates deep within the Earth's interior |
| Hydroelectric Energy | Electrical energy generated by the movement of water |
| Solar Energy | Energy produced by the sun |
| Wind Energy | Energy produced by the wind |
| Tidal Energy | Kinetic energy that is seen in rising and falling tides |
| —Formulas— | |
| Kinetic Energy Formula | KE=1/2mv^2 |
| Potential Energy Formula | GPE=mgh |
| —KE and PE— | |
| What two things does Kinetic energy rely on? | Speed and mass |
| What are the three types of Potential energy? | Chemical; Elastic; Gravitational |
| At what point is the Potential Energy the greatest? | At the top |
| At what point is the Kinetic Energy the greatest? | At the bottom |
| At what point is Kinetic and Potential Energy equal? | At point of descent , and the rising point |
| —Energy Resources— | |
| What is the percentage of efficiency in most man made energy transformations? | 20%-40% |
| What percentage of the world's energy is nonrenewable? | over 85% |
| List the types of renewable energy | BIomass energy, Geothermal energy, hydroelectric energy, solar energy, wind energy, tidal energy |
Created by:
hihello2007
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