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energy
| Question | Answer |
|---|---|
| energy | The ability to cause change |
| KE | Energy of motion |
| PE | stored energy |
| GPE | Energy stored in objects that are above the earth surface |
| la of conservation of energy | Energy can never be created or destroyed. It can only change forms. |
| electromagnetic energy | Energy that is reflected, or emitted in the form of electrical wave that can travel through space |
| mechanical energy | The total amount of KE plus PE in a system |
| thermal energy | The sum of PE plus KE particles in a object |
| temperature | A measure of average KE particles in an object |
| heat | The transfer of energy from one object to another |
| insulator | Materials that allow heat to not slow easy |
| conductor | Materials that allow heat to flow easy |
| specific heat | The amount of heat needed to raise the temperature of 1 kg of a material by 1°C or K |
| work | transfer of energy that occurs when a force makes an object move |
| power | The amount of work done in a certain amount of time ;the rate at which work is done |
| explain the differences between the three types of potential energy | elastic PE is stored an object that are compressed or stretched chemical PE is energy store in chemical bonds. Gravitational PE is stored in objects that are above the earth surface. |
| where would you find radiant energy? | lightbulb |
| where would you find thermal | sun |
| where would you find electrical energy? | outlet |
| where would you find sound energy? | speaking |
| where would you find nuclear energy? | power plant |
| where would you find electromagnetic energy | phone |
| what is the relationship between KE plus PE of a falling object | The object starts with GPE, as it falls GPE decreases, and converts to Ke, which, as the object falls increases |
| determine the energy conservation for a lightbulb | electrical to radiant/thermal |
| determine the energy conservation for a firework | Chemical potential energy to radiant/thermal to sound |
| determine the energy conservation for a flute | kinetic energy to sound |
| determine the energy conservation for a leaf | radiant to chemical |
| explain the relationship between temperature and kinetic energy | temperature means a measure of the average KE of particles in an object as the temperature rises the kinetic energy of particles rise |
| explain why there is no such thing as cold | There’s no such thing as cold, because cold means the absence of something that is just without heat is cold they have a ke in their particles |
| describe how thermal energy flows when a person is sitting in a chair at a | thermal energy flows by conduction when a person sitting in a chair at the desk the heat goes from a higher temperature to lower temperature |
| explain the difference between the three types of thermal energy transfer and examples | conduction is the transfer of energy through direct contact of matter and example would be rubbing hands together.convection is the transfer of energy by the movement of heated particle An example would be boiling water.radiation is the transfer of energy |
| List examples of materials that would classify as conductors versus insulators | conductors- metals and skin insulators- air, wood, and plastic |
| elastic potential energy | Energy that is stored in objects that are being compressed or stretched |
| radiant energy | light that comes from the sun in light bulbs, used to see in as a power source. |
| thermal energy | heat that comes from fire, son, etc. Used to heat objects. |
| comes from outlets in power plants, used to power electrical devices. | electrical energy |
| sound energy | comes from a variety of sources, used most for communication |
| nuclear energy | comes from releasing energy from nucleus of an atom, used in nuclear power plants |
| electromagnetic energy | Energy that is reflected, or admitted in a form of electrical waves I can travel through space. |
| does mass increase as thermal energy increases? | yes |
| formula for specific heat | Q=me^T |
| what Hass to meet for something to be considered work? | TWO conditions have to meet for something to be called work |
Created by:
payton jones