Rock Cycle

Rock Cycle:

Rock Cycle 1

Did you know?:

Did you know? Did you know that rocks are constantly being recycled? Some of these rocks have been around for more than four billion years and are being changed into different rocks. Of course, that doesn't happen over night. It takes millions of years. 2

Rock Cycle:

Rock Cycle To better understand how this happens, let's take a journey through the…….. 3

Where it all begins…:

Where it all begins… Our journey through the Rock Cycle begins deep inside the Earth as red hot magma. The magma begins to push up toward the Earth’s crust, which is where we walk (the ground). The magma forces its way out of the ground through volcanoes and cools to form IGNEOUS ROCKS. 4

The next step…:

The next step… After the Igneous rocks cool, some of them roll down the mountains formed by the volcanoes and end up in the ocean. That is one long journey, isn’t it? 5

Then….:

Then…. As the Igneous rocks roll, bits and pieces begin to break off and form sediments. Sediments can also be formed by rocks weathering from rain and wind. Layer after layer of the sediments begin to get pressed and cemented together and they form SEDIMENTARY ROCKS! 6

For the Next Step….:

For the Next Step…. Some of the sedimentary rocks on the very bottom of the pile, get hot because of pressure. The hot sedimentary rocks then change into METAMORPHIC ROCKS! 7

After That…:

After That… When the metamorphic rock gets buried deep in the Earth, it gets hotter and begins to melt. ONCE AGAIN, it becomes magma and the process begins all over again. 8

Let me show you what that looks like!:

Let me show you what that looks like! 9 On the next slide, you will see how the whole process works in one big picture. Make sure to take notes on this slide because you will see it again. <Hint, Hint> And remember, the Rock Cycle looks more confusing then it really is!

Slide 10:

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Slide 11:

11 The first steps begins with magma and the forming of Igneous Rocks. Then erosion and weathering comes into play and create sediments Sediments get compacted and form Sedimentary Rocks Add heat and pressure Metamorphic Rocks are then created Add some more heat Start all over again!

Take One more look:

Take One more look Original Version What you will need to complete. 12

What comes next?:

What comes next? Now that you know the three major types of rocks- sedimentary, metamorphic and igneous Now that you know different rock samples Now that you know how the Rock Cycle works I am going to ask you to put all of your knowledge together in one summary of what you have learned. This summary will come in the next lesson. Good Luck 13

If you are interested…..:

If you are interested….. Much of the information found on this Power Point came from: http://library.thinkquest.org/J002289/cycle.html\ Take a look if you wish to learn more about the topic. 14