What activates a convection current, starting the flow of a fluid?A.
cold temperatures at the north pole

B.
heated liquids at the earth’s surface

C.
iron-rich rocks in the mantle

D.
temperature differences in the mantle

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Answers

Answer 1

Answer: The thing that activates a convection current, starting the flow of a fluid is D) temperature differences in the mantle.

Answer 2

Answer:

Answer:

the answer is "D temperatures different in the mantle"

Explanation:

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Answers

Answer:

The lithosphere

Explanation:

The lithosphere is the sphere of the Earth that is made up of the crust. It contains all the landforms on the planet and is found below the atmosphere. the lithosphere is begins the surface and extends down to the uppermost parts of the mantle. All these zones are the planet are know for being rigid, the main feature of the lithosphere. The depth of the lithosphere depends on where one is located, but this layer is thicker on the continents and shallower under the oceans.

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Answers

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Answers

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Answers

Breifly, a convection current is a current in a fluid that results from convection.
But, in more detail: Convection is one of the three main types of heat transfer, the other two being conduction and radiation. Unlike the other two, convection can only happen in fluids,- liquids and gases. This is because the molecules have to be free to move.

Heat energy can transfer by convection when there is a significant difference in temperature between two parts of a fluid. When this temperature difference exists, hot fluids rise and cold fluids sink, and thencurrents (movements) are created in the fluid.

Answer:

A convection current is the flow of heat within a fluid.

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