physical science 3
39 flashcards
- The process of transferring energy by means of electromagnetic waves.
- Radiation
- The transfer of heat by molecular collisions.
- Conduction
- The transfer of heat by the movement of a substance, or mass, from one place to another
- Convection
- Phase change where a substance changes directly from the solid to the gaseous phase
- Sublimation
- The amount of heat necessary to change one kilogram of a liquid into a gas is the latent heat of ____________
- Vaporization
- Net energy transferred from one object to another because of a temperature difference
- Heat
- The heat associated with a phase change
- Latent heat
- SI unit for heat, energy, and work
- Joule
- Measure of the average kinetic energy of the molecules of a substance
- Temperature
- The amount of heat necessary to raise the temperature of one kilogram of water one Celsius degree
- Kilocalorie
- The amount of heat necessary to raise one gram of pure water by one Celsius degree at normal atmospheric pressure
- Calorie
- Temperature of a mixture of ice and water at normal atmospheric pressure
- Ice/freezing point
- Temperature at which pure water boils at normal atmospheric pressure
- Steam/boiling point
- The science dealing with the production of heat, the flow of heat, and the conversion of heat to work
- Thermodynamics
- The amount of heat necessary to raise the temperature of one kilogram of the substance one Celsius degree.
- Specific heat
- 6 The amount of heat necessary to change 1 kg of a solid into a liquid at the same temperature is the ____
- Latent heat of fusion
- Thermodynamically speaking, its change tells whether or not a process can take place naturally. The amount of disorder in a system.
- Entropy
- Phase change where a substance changes directly from the gaseous to the solid phase.
- Deposition
- SI unit for power
- Watt
- Energy that travels through space in the form of light
- Radiant energy
- Energy associated with kinetic and potential energies on a molecular level
- Thermal energy
- Energy an object possesses because of its motion
- Kinetic
- Energy an object has because of its position or location
- Potential energy
- Energy source in power plants
- Nuclear energy
- Energy associated with the motions of electric charges
- Electrical energy
- Energy is never created or destroyed
- Law of conservation of total energy
- The time rate of doing work
- Power
- The sum of kinetic and potential energies
- Mechanical energy
- The product of force and distance
- The SI unit for work
- Energy involved in chemical reactions
- Chemical energy
- The ability to do work
- Energy
- A degree Celsius is ___ times as large as a degree Fahrenheit.
- 1.8
- The greater the specific heat, the greater the amount of heat necessary to raise the temperature per unit mass.
- What does a high specific heat mean?
- What materials have the highest thermal conductivity? Lowest?
- Metals, wood
- Heat added to a closed system goes into the internal energy of a system or does work.
- First law of thermodynamics
- It is impossible for heat to flow spontaneously from a colder body to a hotter body
- Second law of thermodynamics
- It is impossible to attain a temperature of absolute zero
- Third law of thermodynamics
- A possible fate where the universe cools down to a final common temperature
- The heat death of the universe
- A force must be applied, and the object must move in the direction of the force
- 2 things must occur for work to be done