Which is the transfer of thermal energy in matter with no overall transfer of matter? convection radiation conduction insulation

Radiation

Explanation:

There are three types of transfer of thermal energy:

- Conduction: conduction occurs when two objects/two substances are in contact with each other, and the warmer object transfers heat to the colder object through the collisions of the particles of the two objects. In this case, therefore, there is transfer of matter, so this is not the correct choice

- Convection: convection occurs in fluids. When a fluid is heated, the part of the fluid closer to the heat source gets warmer, becomes less dense and rises, replacing the colder part of fluid that sinks. Then, this part is heated, and the cycle goes on. In this type of heat transfer, there is transfer of matter, so this is not the correct choice.

- Radiation: radiation occurs when thermal energy is transferred through electromagnetic radiation. Since electromagnetic waves carry energy but not matter, in this type of heat transfer there is no overall transfer of matter. So, this is the correct answer.

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water

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