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BeaverLocal 14
Question | Answer |
---|---|
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 |