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When convection takes place in the mantle why does cool rock materiel sink and warm rock material rise?
Wiki User
∙ 11y ago
This happens with all liquids which have varied heat through out it, in fact even in the air. This happens because when objects get hotter, they vibrate more, and thus take up more space. This means that the same mass takes up more space, meaning that the substance becomes less dense. Therefore, the hotter rock rises above the cooler rock because it vibrates more, so takes up less space, so is less dense.
From there, denser substances fall to the bottom because the heavier objects can push the lighter substances out of the way, which in this case, is upwards.
Wiki User
∙ 11y ago
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Where in the earth do convection currents occur?
Convection currents take place in the mantle.
Which layer of the earth is the place where convection occurs?
Convection currents rese and sink through the mantle and the liquid outer core. In Earth's mantle, large amounts of heat are transferred by convection currents. Heat from the core and the mantle itself causes convection currents in the mantle.
How does convection current occur in the mantle?
radioactive decay takes place, which produces lot of heat and causes the mantle to flow in convection currents veena
How does convection take place in the mantle?
Convection in any fluid will occur when the lower portion is warmer than the upper portion. The less dense warm material will tend to rise while the denser cooler material will tend to sink. While the mantle is generally though of as solid, even solids can behave as viscous liquids over millions of years.
Do convection currents occur in the mantle or the outer core?
The answer is that convection currents occur in both. Convection currents are just natures way of moving heat from one place (deep in the earth) to another place (closer to the surface) in the most efficient way possible.In the outer core, convection happens because the magma is liquid, so it flows easily. Also, since it contains moving charged particles, most scientists believe that the outer core generates the Earth's magnetic field.Convection curents also happen in the mantle, but they are slower because the mantle is mostly solid, so it flows very slowly. Convection currents in the mantle are believed to drag the tectonic plates with them, causing the continents to drift over long periods of time.Well the Earth's magnetic field is a result of the convective movement of the outer core.
Where in the earth do convection currents occur?
Convection currents take place in the mantle.
Which layer of the earth is the place where convection occurs?
Convection currents rese and sink through the mantle and the liquid outer core. In Earth's mantle, large amounts of heat are transferred by convection currents. Heat from the core and the mantle itself causes convection currents in the mantle.
How does convection current occur in the mantle?
radioactive decay takes place, which produces lot of heat and causes the mantle to flow in convection currents veena
How does convection take place in the mantle?
Convection in any fluid will occur when the lower portion is warmer than the upper portion. The less dense warm material will tend to rise while the denser cooler material will tend to sink. While the mantle is generally though of as solid, even solids can behave as viscous liquids over millions of years.
Name 2 layers of earth in which convection currents take place?
athenosphere and lithosphere
Why does cool material sink when convection takes place in the mantle?
Cool things always sink (because they are more dense) and hot things always rise (because they are less dense) in convection. It does not matter if it is rock, air, water, metal, wax, oil, etc., convection always works the same.
Where do convection currents take place in the earth?
Convection currents are located in the astenosphere in boiling water and lots of other places
What are convection currents and where are they found?
Convection currents in the mantle are streams of fluid produced by the process of heat transfer from one place to another. The earth gets very hot as you go nearer to the core. The mantle is thus heated up as it is right next to the core. As a result, convection currents are formed.*Core: It is a spherical zone that lies at the center of the earth.*Mantle: It is the layer surrounding the outer core of the earth.
What are the two layers of the earth in which convection takes place?
Mantle is one, and I'm gonna guess core.
How do convection currents work in the mantle?
What forces would lead to the movement of the plates over the surface of the earth? At this time it is believed this movement results from mantle convection. Deep within the earth there is a large amount of heat coming from two sources: the magma remnants of the Great Bombardment, and radiation from radioactive elements. This heat, in accordance with the 2 ndlaw of thermodynamics, must flow to a cooler place, and subsequently rises to the surface of the Earth. If the Earth were smaller, this heat would flow by conduction, but because of the relatively large size of the Earth, convection also takes place. Thus, as in heating a pot of water on a stove, convection currents are established within the earth, which bring warm material to the surface and send cooler material to the interior.
What are the two layers of earth in which convection current takes place?
Mantle is one, and I'm gonna guess core.
What are two layers of earth in which convection currents takes place?
dont known tell me
