Physics, 27.08.2019 13:30 Huvch7255

Astudent places a large pot of cold water on a stove and heats it for one minute. then she takes the pot of water off the burner and places it on the counter. which best describes the convection currents?
convection currents move thermal energy from the stove to the pot, and then the pot to the water.
after the stove is turned off, convection currents continue to transfer energy through the water for a period of time.
convection currents in the water cause warmer, denser water to rise and transfer energy upward.
when the stove is turned on, convection currents cause an increase in the chemical energy of water molecules.

Answers: 2

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The statement that best describes convection would be:

"After the stove is turned off, convection currents continue to transfer energy through the water for a period of time."

By definition, convection is the movement caused within a fluid by the tendency of hotter and less dense material to rise, and colder, denser material to sink, which results in the transfer of heat.

Answer from: backu1477

option 2: After the stove is turned off, convection currents continue to transfer energy through the water for a period of time.

Explanation:

Convection currents transfer thermal energy in fluids. When a fluid is heated, the layer closer to the heat source gets warm. The lighter warm layer rises up and the denser cold layer takes its place and gets warm. The process continues till the entire fluid is evenly hot.

when the student places a large pot of cold water on a stove and heats for one minutes and then removes the pot off the burner. The convection currents continues to transfer energy through the water for a period of time till the entire water is evenly warm. Hence, the correct option is 2.

Answer from: Quest

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

Answer from: Quest

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

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Astudent places a large pot of cold water on a stove and heats it for one minute. then she takes the...