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Science Chapter 9
chapter 9 of physical science notes
Question | Answer |
---|---|
Add the potential energies (PE) and the kinetic energies (KE) to get what? | Total internal energy (TE) of matter. |
What is thermal energy? | Thermal energy is part of a system that is the sum of all the kinetic energies of its particles. |
How can thermal energy only be measured? | As it is transferred from one system to another. |
What is transferring particle kinetic energy, the motion, called? | It is called heating or cooling. |
A loss of thermal energy is usually accompanied by what? | Falling temperatures |
A gain of thermal energy is usually accompanied by what? | Rising temperatures |
Temperature is measured in degrees by what? | A thermometer |
What is viscosity? | The measure of the resistance of liquids to flow. |
What is heat? | The quantity of thermal energy that flows from one place to the other. |
What is conduction? | When two objects of different temperatures touch, thermal energy moves from the hotter object to the cooler one. |
What is convection? | Thermal energy carried from one location to another by a fluid. |
What are insulators? | Materials that resist the flow of thermal energy. |
What is heat capacity? | The relationship between the amount of thermal energy absorbed and the temperature change caused by this. |
What is the latent heat of fusion? | The amount of thermal energy exchanged per gram of material during melting or freezing. |
What is the latent heat of vaporization? | The amount of heat it takes to change the liquid to a gas. |