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BeaverLocal 14

QuestionAnswer
A measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object Temperature
The temperature of a substance is proportional to the average _______________ energy of the substance's particles Kinetic
As the average kinetic energy of the particles in an object increases, the object's temperature __________________ Increases
What is -175 degrees Celsius on the Kelvin scale? 98 K
What is associated with the sensation of hot and cold? Temperature
What is proportional to the average kinetic energy of molecules? Temperature
What is measured with a thermometer? Temperature
The transfer of energy by the movement of fluids or gases with different temperatures is called _________________ Convection
Which method of energy transfer does not involve movement of matter? Radiation
Which substance is the best conductor of transferring energy as heat? Iron or rubber? Iron
T or F: Energy as heat is transferred from a lower temperature to a higher temperature F
T or F: Energy as heat is tranferred from a higher temperature to a lower temperature? T
T or F: The amount of heat in a closed system is constant F
T or F: Energy as heat transferred into an object is determined by the amount of work done on the object F
What equation would you use to solve: How much heat energy will cause the temperature of 7.0 kg of iron to increase its temperature by 15 K? The specific heat of iron is 449 J/kg X K Energy = specific heat X mass X temperature change
Quantity of heat required to raise a unit mass of homogeneous material 1 K or 1 degrees Celcius in a specified way given constant pressure and volume Specific Heat
T or F: On the Fahrenheit scale, water freezes at 32 degrees Fahrenheit T
T or F: Conduction is the only method of energy transfer that can take place in a vaccuum F; Radiation
T or F: An example of an internal combustion engine is a diesel engine T
T or F: Some of the energy generated as heat by a heating system is wasted T
___________________ is a measure of the average kinetic energy of all the particles within an object Temperature
_____________________ is the temperature at which an object's energy is minimal Absolute Zero
__________________ transfers heat energy between particles as they collide within a substance or between two objects in contact Conduction
Radio waves, infrared radiation, visible light, ultraviolet rays, and X rays are forms of __________________________ Electromagnetic Waves
A(n) ___________________ is a material that is a poor energy conductor Insulator
A ___________________ is a material through which energy can be easily transferred as heat Conductor
A(n) _________________ is a material that transfers energy poorly Insulator
A(n) ______________________ can reduce energy transfer Insulator
The energy that is transferred as electromagnetic waves, such as visible light and infrared waves Radiation
How does radiation differ from conduction and convection Radiation does not involve the movement of matter across space
The transfer of energy as heat through a material Thermal Conduction
The transfer of energy through a wire is an example of ___________________________ Thermal Conduction
The movement of matter due to differences in density that are caused by temperature variations Convection
____________________ is possible ONLY in fluids Convection
The heating and cooling of a room involves ________________________ currents Convection
Created by: kjones0722
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