Q: Explain the Rock Cycle in brief...
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Answers
Answer:
Rocks
It's hard to determine which step in the rock cycle is the first, since the cycle is an ongoing process that virtually never ends. However, for the purposes of explaining the cycle, we'll start with what we see all around us on a daily basis: rocks. As time goes by, rocks are worn down by wind, rain, rivers, streams, freezing and thawing ice and other forces of nature. Rocks can break up and even slowly turn into small particles like sand that are collectively called sediment.
Sediment
Sediments are blown all over by the wind and carried by streams. Many particles end up at the bottom of riverbeds where they are compacted and eventually become what is known as sedimentary rock. Sandstone is a type of sedimentary rock. When the earth's tectonic plates shift, these rocks can be pulled underneath the ground where it is extremely warm.
Rocks
It's hard to determine which step in the rock cycle is the first, since the cycle is an ongoing process that virtually never ends. However, for the purposes of explaining the cycle, we'll start with what we see all around us on a daily basis: rocks. As time goes by, rocks are worn down by wind, rain, rivers, streams, freezing and thawing ice and other forces of nature. Rocks can break up and even slowly turn into small particles like sand that are collectively called sediment.
Magma
When rocks are pushed deep enough under the earth's surface, the heat can literally melt them, and magma is created. When magma comes out of the ground, it is known as lava, but not all magma makes it above ground. Some magma is pushed upward where it is slightly cooler, and since different minerals take different amounts of time to cool, the minerals in the magma separate and rocks such as granite are formed underground. These rocks eventually make their way to the surface through movements in the earth's plates. Other rocks are made when lava comes forth from a volcano. This way, the lava cools much more quickly, not giving the minerals time to separate. This process usually forms lava rocks and other such stones.
Rocks...Again!
Now the rocks have found their way back to Step 1, where they will once again become sediment, sedimentary rocks, magma, and then rocks again.
THE ROCK CYCLE OPERATES IN THE FOLLOWING WAYS :
- THE HOT AND MOLTEN MAGMA FORMS IGNEOUS ROCKS ON COOLING.
- THESE IGNEOUS ROCKS ARE EXPOSED TO DIFFERENT AGENTS OF WEATHERING AND EROSION ON THE EARTH'S SURFACE.
- THE BROKEN ROCK FRAGMENTS, WHEN TRANSPORTED AND DEPOSITED IN BASINS, FORM SEDIMENTARY ROCKS.
- THIS MAGMA AGAIN COOLS DOWN AND FORMS IGNEOUS ROCKS.
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