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PS Ch 4 Rev
Chapter 4 Study Guide
| Question | Answer |
|---|---|
| The more _____ a moving object has, the more kinetic energy it has. | Speed |
| Energy in the form of motion is _____. | Kinetic energy |
| A rock at the edge of a cliff has _____ energy because of its position. | potential |
| Friction causes some mechanical energy to change to ______ energy. | thermal |
| Energy that is stored is ____ energy. | potential |
| _______ is measured in joules. | Energy |
| Doubling an object's velocity will ______ its kinetic energy. | quadruple |
| _________ potential energy is energy stored in chemical bonds. | Chemical |
| _________ energy is energy stored by things that stretch or compress. | Elastic potential |
| A book and a feather sitting next to each other on a shelf have _______ potential energies. | different |
| Two copies of the same book are in a book case. One book is twice as high as the other. They have the ______ potential energy. | different |
| A toaster oven converts _____ energy to thermal energy to make toast. | electrical |
| _______ energy is the total amount of potential and kinetic energy in a system. | Mechanical |
| When a plant falls from a window its _____ energy is transformed into kinetic energy. | potential |
| The ______ states that although energy can change forms it can never be created or destroyed. | Law of Conservation of Energy |
| Thermal energy is measured in ____. | joules |
| The ____ energy of an object increases with its height. | potential |
| The kinetic energy of an object increases as its ____ increases. | speed or mass |
| Mechanical energy is the total kinetic and ___ energies in a system. | potential |
| _____ can cause kinetic energy to change into thermal energy. | Friction |
| Green plants convert light energy from the sun into _____. | chemical potential energy |
| The mechanical energy of a coconut falling from a tree ____. | remains constant |
| The formula for calculating kinetic energy is ___. | KE = 1/2 mass * volume squared |
| The formula for calculating gravitational potential energy is ____. | GPE = mgh |
| In the formula for calculating GPE = mgh, g is a constant. What is its value? | 9.8 meters per second squared |
| A 100kg cart moving at a speed of 7 m/s has a kinetic energy of? | 2,450 J |
| A sack of groceries has a mass of 10kg and is on a shelf 1m above the flood. Calculate its potential energy. | 98 J |
Created by:
jjones87
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