What does the upper mantle do? Is the Earth's crust denser than the mantle? What are rocks formed from molten material called? What does the lower mantle do? What material rises from cracks in the oceanic crust? Which layer forms the largest portion of Earth?
Mantle The region of the earth's interior between the crust and the core, believed to consist of hot, dense silicate rocks (mainly peridotite) Magmas erupted at mid-ocean ridges are derived from the upper mantle Mantle rock The presence of hot mantle leads to melting at the base of the li...
The boundary between the mantle and the earth's crust or surface is called the Mohorovicic Discontinuity. People call it the Moho for short. When the earth experiences volcanic or tectonic activity, rocks from the mantle can spew through openings in rifts and volcanoes to change the face of th...
currents in oceans. where they occur thermohaline circulation can only develop in extremely cold regions where the temperature of the air is low enough to make the surface water very cold, highly salty and more dense than the water beneath it. thus, deep currents generally occur in the higher ...
What is the temperature of the Earth's lithosphere? Lithosphere: Earth's outermost layer including the outermost mantle and the crust is called the lithosphere. The lithosphere is not continuous but made up of many large pieces of solid rocks, called plates, floating on the upper mantle. .The...
which is clearly their specialty. With such large holds, we get less for the money spent, which is generally a bad thing in my eyes, but it does provide a mixture of eye candy and “buzz” that makes the gym and routes seem fresh, exciting and appealing. So, every once in a while...
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The oceans consist of layers of water with different qualities. The energy for ecosystems is generated by plankton, mostly in the upper layer known as the photic zone (the region where light penetrates the ocean). Plankton use light and nutrients in the water to generate food energy. Larger ...
The melt water moves downward into the glacier and often freezes at the ice interface. Mud and fine rock debris are also carried downward. Snow, ice, and water can be lost from the upper portions of a rock glacier through ablation, melting, runoff, and evaporation. As a result, the ...
The water released from the plate going beneath the continental plate will lower the melting temperature of the mantle wedge. This results in magma being produced which will commonly cool at depth in the ocean. When the magma does reach the surface of the ocean, it will create a volcano. ...