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science quarterly
| what is energy? | the ability to do work or cause change |
| what are two general kinds of energy? | kinetic and potential |
| what is kinetic energy? | the energy of motion |
| Greek for kinetic means | moving |
| what is potential energy? | energy that is stored and held in readiness and has potential to do work |
| what are two types of potential energy? | elastic and gravitational |
| what is elastic potential energy? | potential energy associated with objects that can be stretched or compressed |
| what is gravitational potential energy? | potential energy that depends on height |
| what is energy stored in? | fuels |
| what is a fuel? | a material that stores chemical potential energy |
| coal, petroleum, and natural gas are all known as | fossil fuels |
| what is temperature? | the measure of the average kinetic energy of the partials in a substance |
| what are the three temperature scales? | Fahrenheit, Celsius, and kelvin |
| AZ= -460 WF= 32 WB= 212 | Fahrenheit |
| AZ= -273 WF= 0 WB= 100 | Celsius |
| AZ= 0 WF= 273 WB= 373 | Kelvin |
| what is thermal energy? | the total energy of all particles within an object |
| what is heat? | thermal energy that moves from a warmer object to a cooler object |
| what is heat transferred by? | conduction, convection, and radiation |
| what is conduction? | the way heat is transferred from one particle of matter to another without the movement itself |
| what is convection? | the movement that transfers heat within the water. |
| what is radiation? | the transfer of energy by electromagnetic waves |
| what is a conductor? | a material that conducts heat well like metals such as silver and stainless steel |
| what is an insulator? | a material that does not conduct heat well such as wood, wool, straw paper, and cork |
| what are the 3 states of matter? | solid, liquid, and gas |
| how will matter change from one state to another | when thermal energy is absorbed or released |
| what is melting point? | the temperature at which a solid changes to a liquid |
| what is freezing point? | when a substance changes from a liquid to a solid |
| what is boiling point? | the temperature at which a liquid boils |
| what is vaporization? | the process by which matter changes from the liquid to the gas state |
| what is condensation? | a change from the gas state to the liquid state |
| what is evaporation? | vaporization that takes place at the surface of a liquid |
| what are the layers of the atmosphere? | troposphere, stratosphere, mesosphere, and thermosphere |
| what are the 2 layers of the thermosphere? | the ionosphere and the exosphere |
| what is the weather instrument that is used to measure air pressure? | barometer |
| what is the weather instrument that is used to measure air temperature? | thermometer |
| what is the weather instrument that is used to measure wind velocity? | anemometer |
| what is the weather instrument that is used to measure wind direction? | wind vane |
| what is the weather instrument that is used to measure precipitation? | rain gauge |
| what is the weather instrument that is used to measure relative humidity | psychrometer |
Created by:
lia1618
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