thema 2 transport van thermische energie Flashcards
What is thermic energy?
Thermic energy refers to the energy that comes from heat.
True or False: Thermic energy can only be transferred through conduction.
False.
Name the three primary methods of transporting thermic energy.
Conduction, convection, and radiation.
Fill in the blank: The transfer of heat through direct contact between materials is called __________.
conduction.
What is convection?
Convection is the transfer of heat through the movement of fluids (liquids or gases).
True or False: Radiation requires a medium to transfer thermic energy.
False.
In which method of heat transfer do warm regions rise and cool regions sink?
Convection.
What is the primary mechanism of heat transfer in solids?
Conduction.
Fill in the blank: __________ is the process by which thermal energy is transferred through electromagnetic waves.
Radiation.
What is the role of thermal conductors?
Thermal conductors facilitate the transfer of heat energy through conduction.
True or False: Insulators are materials that easily transfer thermic energy.
False.
Name one example of a thermal insulator.
Styrofoam.
What is the primary factor that affects the rate of heat transfer by conduction?
The temperature difference between the two materials.
Fill in the blank: In convection, heat is transferred through the movement of __________.
fluids.
What type of radiation is primarily responsible for the heat we feel from the sun?
Infrared radiation.
True or False: All materials are equally effective at transferring heat.
False.
What is the definition of thermal conductivity?
Thermal conductivity is a measure of a material’s ability to conduct heat.
Name one application of convection in everyday life.
Heating water in a pot on the stove.
Fill in the blank: The transfer of heat through empty space is called __________.
radiation.
What is a thermos bottle designed to do?
Minimize heat transfer through conduction, convection, and radiation.
True or False: Heat can be transferred from a colder object to a hotter object without external work being done.
False.
What is the significance of the Stefan-Boltzmann Law in thermic energy?
It describes the power radiated by a black body in terms of its temperature.
Name a factor that influences the rate of heat transfer by radiation.
The temperature of the radiating surface.
What does a heat exchanger do?
A heat exchanger transfers heat between two or more fluids without mixing them.
