heat
DESCRIPTION
Heat . Chapter 11. Whew! It's Hot! . Activator: Boiling water=100°C and 212°F Decide if each temperature is hot Or cold: 60°F 60°C 37°F 37°C 0°C 100°F 70°F. Temperature and thermal energy. Temperature – measure of the average kinetic energy of the particles in an object - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/1.jpg)
Chapter 11
Whew! It's Hot!
![Page 2: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/2.jpg)
Activator:Boiling water=100°C and 212°FDecide if each temperature is hot Or cold:60°F60°C37°F37°C0°C100°F70°F
![Page 3: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/3.jpg)
Temperature and thermal energy
![Page 4: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/4.jpg)
Temperature – measure of the average kinetic energy of the particles in an object
Thermal energy – the TOTAL energy of the particles that make an object
Heat – the transfer of energy between objects at different temperatures
![Page 5: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/5.jpg)
1)Temperature is a measure of the average kinetic energy of the particles in an object
2)The more kinetic energy particles have the higher the temperature will be
![Page 6: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/6.jpg)
3) Temperature (unlike thermal energy) is not determined by the amount of substance. BUT – if you have more of the substance you will have MORE thermal energy because you have more particles
![Page 7: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/7.jpg)
Summary Point 1: Talk with the personnext to you and tell them how temperatureand kinetic energy are related?
![Page 8: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/8.jpg)
4) Thermal expansion is the increase in volume of a substance due to an increase in temperature.
It happens because the particles spread away from each other when heated
When particles spread apart the substance becomes less dense
![Page 9: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/9.jpg)
5) The three temperature scales we use are Fahrenheit32°F 212°F
Celsius0°C 100°C
Kelvin273K 373K
![Page 10: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/10.jpg)
Section 2: Heat
![Page 11: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/11.jpg)
6) Heat is the transfer of thermal energy between objects that are at different temperatures.
![Page 12: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/12.jpg)
7) Thermal Energy is the TOTAL energy of particles that make up a substance.
It depends on temperature and amount of the substance.
![Page 13: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/13.jpg)
Summary Point 2: What is heat?
![Page 14: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/14.jpg)
8) The three ways thermal energy is transferred:
ConductionConvectionRadiation
![Page 15: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/15.jpg)
9) Conduction is the transfer of thermal energy through direct contact between objects
![Page 16: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/16.jpg)
10) Items that transfer thermal energy well are called conductors (metals)
Items that DO NOT conduct energy well are called insulators
![Page 17: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/17.jpg)
Every atom is physically bonded to its neighbors in some way. If heat energy is supplied to one part of a solid, the atoms vibrate faster. As they vibrate more, the bonds between atoms are shaken more. This passes vibrations on to the next atom, and so on:
Eventually the energy spreads throughout the solid. The overall temperature has increased.
![Page 18: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/18.jpg)
11) Convection: transfer of thermal energy by movement in a liquid or gas.
![Page 19: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/19.jpg)
12) Radiation is the transfer of thermal energy through matter or space as electromagnetic waves.
Examples: light and heat from a fire
![Page 20: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/20.jpg)
Temperature vs Thermal energy:What’s the difference?
![Page 21: Heat](https://reader034.vdocuments.us/reader034/viewer/2022051700/568163dd550346895dd535f8/html5/thumbnails/21.jpg)
AP #3 Compare and Contrast heat, temperature, and thermal energy
Heat
Thermal EnergyTemperature