18693838
Description
Flashcards by Rana Nabhan, updated more than 1 year ago
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Created by Rana Nabhan
over 5 years ago
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| Question | Answer |
| what is temperature? | a measure of the average kinetic energy of particles in a substance that results in how hot or cold the substance is. |
| what is conduction? | a method of heat transfer in which heat is passed by vibration of particles. |
| what is absolute zero? | the lowest possible temperature -273 degrees Celsius. |
| what is temperature measured in? | temperature is usually measured in degrees Celsius. Fahrenheit and kelvin scales are also used to measure temperature. |
| The three scales commonly used to measure temperature | |
| what are poor conductors? | the are plastic , air , cloth ,wood and rubber are all very poor conductors of heat. |
| what is convection? | convection is the circular motion that happens when warmer air or liquid-which has faster moving molecules, making it less dense- rise, while the cooler air or liquid drops down. |
| what is radiation? | a movement of heat in the form of electromagnetic waves, which van travel through a vacuum. |
| what are some examples of convection? | Boiling water - the heat passes from the burner into the pot, heating the water at the bottom steaming cup of hot tea- the steam is showing heat being transfered into the air ice melting-heat moves to the ice from the air. |
| what are some examples of good conductors? | silver ,gold, aluminum and cooper are all good conductors of heat. |
| what is the temperature in which water freezes on these scale Fahrenheit Celsius kelvin | 32 Fahrenheit 0 degrees Celsius 273 k |
| the temperature in which particles barley move at all | absolute zero[273 degrees] |
| heat transfer involving particles that are free to move | the greater temperature difference the faster the flow of heat. |
| the process of heat transfer by vibrating particles | this is called conduction. |
| what's the difference between heat and temperature? | heat is the total energy of molecular motion in a substance while temperature is a measure of the average energy of molecular motion I a substance. |
| how do thermometers work? | thermometer measure temperature but do not measure the heat of a substance. |
| What are conductors? | A substance that allows heat to flow through it. |
| particle model diagrams for a solid ,liquid and a gas. | |
| how is heat transfered? | heat is transfered by convection in liquids and gases because there particles can move around. |
| how does the sun transfer its heat energy? | through a process called radiation. |
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