Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
SParks PS Energy Rev
Vocabulary review PS 8 Energy
| Question | Answer |
|---|---|
| energy | the ability to do work |
| force | a push or pull |
| mechanical energy | a type of kinetic energy that involves moving parts |
| chemical energy | energy stored in the bonds of foods, batteries & fuels |
| Celsius | temperature scale based on the boiling and freezing water at 0 and 100 |
| Kelvin scale | scale designed to eliminate use of negative numbers |
| absolute zero | temperature at which all motion stops (-273 C or 0 K) |
| condensation | phase change from gas to liquid |
| vaporization | phase change from liquid to gas (at boiling) |
| evaporation | phase change from liquid to gas (at any temperature) |
| cause of phase change | amount of kinetic energy (motion) present |
| convection | transfer of heat by a carrier such as water or air |
| radiation | transfer of energy through waves; can travel through a vacuum |
| generator | device that changes mechanical (moving) energy to electricity |
| electric motor | device that changes electricity to mechanical (moving energy) |
| heat pump | device that transfers heat from a cooler area to a warmer area |
| heat engine | device that changes heat to mechanical energy |
| wavelength | distance from crest of one wave to crest of another |
| frequency | number of waves that pass a point every second |
| amplitude | distance from origin (baseline) to crest |
| reflection | bouncing back of light or sound |
| refraction | bending of light or sound as they move through different mediums |
| diffraction | curving around objects |
| interference | effect of two waves when they meet (constructive gets bigger, while destructive gets smaller) |
| resonance | result of matching the natural frequency of a material |
| mirror | device that depends on the reflection of light |
| lens | device that depends on bending light through its curved surface |
| electromagnetic spectrum | display of all the forms of energy that travel at the speed of light, separated by frequency |
| transparent | ability to let almost all visible light pass through |
| opaque | tendency to block most or all light from passing through |
| translucent | ability to block some light waves from passing through |
| thermostat | device that controls temperature by changing shape at certain temperature to open and close a circuit |
| alternating current | household electrical current that constantly direction 60 times/second |
| direct current | current with charges that run in one direction only (batteries) |
| series circuit | circuit that has only one path for electrons so power is shared and all go out if one does |
| parallel circuit | circuit has multiple pathways so full power to each and others will work if one goes out |
| speed | distance divided by time |
| velocity | speed in a given direction |
| acceleration | rate of change of speed (Equals change in speed divided by time to make the change) |
| acceleration due to gravity | 9.8 m/s/s |
| work | movement of a force through a distance |
| power | work/time |
| mechanical advantage | how many times a machine increases your force |
| efficiency | work output compared to work input |
| Newton's First Law | An object at rest stays at rest and an object in motion stays in motion until acted on by a force. |
| Newton's Second Law | Force equals mass x acceleration |
| Newton's Third Law | For every action there is an equal and opposite reaction. |
| static electricity | temporary movement of electrons due to friction |
| current electricity | movement of electrons through a wire |
Created by:
swparks72
Popular Physical Science sets