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What is the transfer of heat when to objects are not touching?
convection and radiation heat transfer bot occur without either object being in direct contact with each other.
When radiation occurs between two objects do the two objects need to be touching.?
The answer to this question is no. Radiation can occur when objects are not touching
The transfer of heat between two objects touching is called?
When a cold object and a hot object are in direct contact (touching) heat will be transferred through thermal conduction. Normally, heat transfer processes are categorized as thermal conduction, radiative transfer or convection. Heat transfer through thermal conduction is the direct transfer of kinetic energy from one molecule to the nearby molecules. Because temperature is directly proportional to kinetic energy, interactions between neighboring particles exchange energy and that exchange energy gradually works it way from the higher temperature regions to the lower temperature regions. The process of the temperature becoming the same is called thermal equilibration. Convective heat transfer occurs in fluids. If a gas, liquid, or other fluid, changes in fluid density change the buoyancy and will cause fluid to flow (a process called convection) and the heat contained in the warmer fluid is transferred to a new location by the physical movement of the fluid. Radiative transfer occurs when a hot object radiates electromagnetic energy. While the sun is an obvious source of electromagnetic energy, it is also generated in smaller amounts by any object. The hotter objects radiate more electromagnetic energy and the cooler objects absorb it. This radiative transfer is important but not as noticeable usually as the other two. It does occur between objects whether they are in direct contact or not, but is usually so small as not to be important of the objects are touching.
Does heat always flow from cooler objects to warmer?
Heat always flows from warmer objects to cooler objects, unless you have a device (like a heat pump) to prevent this. The natural tendency is for two or more objects at different temperatures to eventually all have the same temperature and this is accomplished by heat flowing from the warmer objects to the cooler objects.
Do things have heat energy or you must heat them?
Things heat up by conduction, convection, and radiation. Conduction is when something cold, like a spoon, is physically touching something hot, like warm tea. Convection happens by currents of some sort, like wind or the ocean, when the heat gets spread around. Radiation is like the Sun, or light, or microwaves and x-rays.
When two objects are touching and transfer heat is called what?
When two objects are touching and transfer heat, it is called conduction. Conduction is the transfer of heat energy through direct contact between particles of different temperatures.
Which method of heat transfer can take place if two objects at different temperatures are place if two objects at different tempertaures are placedwithout touching each other in a vacuum?
Radiation.
What is the method of heat transfer that can take place of two objects at different tempurtures are placed without touching each other in a vacuum?
The method of heat transfer that can take place between two objects at different temperatures placed without touching each other in a vacuum is radiation. Radiation is the transfer of heat energy through electromagnetic waves, which does not require a medium for propagation. Objects with higher temperatures emit infrared radiation that is absorbed by objects with lower temperatures, leading to an exchange of heat energy.
Which method of heat transfer can take place if two objects at different temperatures are placed without touching each other in a vaccum placed?
radiation, i think
The transfer of energy from objects with higher temperatures to objects with lower temperatures is defined as which of the following?
Heat transfer.
What term describes the of energy between objects that have different average thermal kinetic energies?
heat
When objects of two different temperature are in contact what ahppens?
When objects of two different temperatures are in contact, heat transfer occurs. The hotter object will transfer heat to the cooler object until they reach thermal equilibrium, where their temperatures are the same. This process is governed by the laws of thermodynamics.
What is the transfer of thermal energy between touching objects?
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When two objects are touching and transfer heat it is called what?
Conduction.
How thermal energy travel?
Thermal energy travels by conduction, convection, and radiation. Conduction occurs when two or more objects of different temperatures are touching each other. The heat flows from the warmer object to the cooler object, until the objects reach equal temperatures. Convection is the transfer of thermal energy through a moving liquid or gas. Radiation is the transfer of thermal energy though matter and space.
Do two objects have to be touching to transfer heat through conduction?
No, two objects do not have to be touching to transfer heat through conduction. Heat can also be transferred through conduction between objects that are in close proximity to each other.
How long does heat flow?
Until the objects touching have equal temperatures.
