Presentation on theme: "An Interactive Tutorial Click here to begin."— Presentation transcript:
1An Interactive Tutorial Click here to begin. Rock TypesAn Interactive TutorialClick here to begin.
2Welcome! In this tutorial, you will be asked to do two things. First, you will work your way through the Rock Types lesson.Second, you will need to take the short assessment, and complete it successfully by answering all the items correctly. If you do not answer all the items correctly, you will have to redo the tutorial until all items are answered correctly.Click Quit at any time to exit the Tutorial.Let’s get started!Begin Quit
3What makes a rock Igneous, Sedimentary, or Metamorphic? Next Quit Rock Types:What makes a rock Igneous, Sedimentary, or Metamorphic?Next Quit
4Are all rocks the same?The answer is no. There are many different kinds of rocks. Geologists, however, have learned that all rocks fall into one of three major categories, or Rock Types.The 3 Rock Types are:IgneousSedimentaryMetamorphicNext Quit
5Igneous RocksThis type of rock is formed when molten magma cools and crystallizes.They can either be:Intrusive (or Plutonic): Formed within the earth like Granite.Extrusive (or Volcanic): Formed on the surface from lava, or ejected fragments from volcanoes.Next Quit
6Examples of Igneous Rocks Granite: This is a Plutonic or Intrusive kind of Igneous rock. It was formed deep in the earth. The crystals within the rock were allowed to cool slowly and grow larger.Pumice: This is a Volcanic or Extrusive kind of Igneous rock. It was formed on the surface of the earth after it was ejected from a volcano. It is easily recognized by its porous texture. It is also very light in weight.Next Quit
7Sedimentary RocksSedimentary rocks are formed when sediments (sand, soil, etc.), organic matter (sea shells, plankton), or evaporates (salts, calcium) are deposited, compacted, and chemically cemented together.This type of rocks usually form closer to the surface of the earth.This type of rock is also where Fossils are found.Next Quit
8Examples of Sedimentary Rocks Breccia: This Sedimentary rock was formed when broken parts of other, larger rocks were deposited and cemented together.Shale: This Sedimentary rock was formed when soils were deposited and compacted together. Shale is usually found in layers that can be easily broken apart. It may even include Fossils.Next Quit
9Metamorphic RocksMetamorphic rocks are formed when a rock of any kind is subjected to such intense pressure and temperature as to change the mineral composition or form of the original rock usually by re-crystallization.This type of rock is formed beneath the surface of the earth.This type of rock can be formed from any of the 3 types of rock.Usually characterize by banding in the rock.Next Quit
10Examples of Metamorphic Rocks Gneiss (pronounced “nice”): Is a Sedimentary rock that has been transformed by intense temperature and pressure deep in the earth. This rock gets its name from it smooth , fine texture.Marble: This rock is formed when Sandstone, or Dolomite is transformed by intense temperature and pressure. The small crystals of the original rock are re-crystallized into larger ones.Next Quit
11What type of rock is that? As we have seen, all rocks are not the same. They fall into one of three categories, or Rock Types.The 3 Types are:Igneous RocksSedimentary RocksMetamorphic RocksCan you identify some of the types of rocks around you?Next Quit
12Are you ready?Now that you have gone through the lesson section of this tutorial, you have a choice to make.You can go through the tutorial again by clicking Here, or…You can take the assessment by clicking the Begin Assessment link at the bottom of this slide.Begin Assessment Quit
19Incorrect. Let’s look at the sample again: Next Quit This is a Sedimentary rock. Why?The main way to tell is that it has the broken parts of other rocks that look like they have been cemented together.
20Sample 2: Igneous Sedimentary Metamorphic Quit Click on the Rock Type to make your choice.IgneousSedimentaryMetamorphicQuit
25Incorrect. Let’s look at the sample again: Next Quit This is an Igneous rock. Why?The main thing to notice here is the presence of large crystals which indicate that this rock was formed deep in the Earth.
26Sample 3: Igneous Sedimentary Metamorphic Click on the Rock Type to make your choice.IgneousSedimentaryMetamorphicQuit
28Incorrect. Let’s take a look at the sample again: Next Quit This is an Igneous rock. Why?The main characteristic here is the porous texture.As the picture indicates, the sample is light in weight which also indicates that it was most likely formed on the Earth’s surface as a result of being ejected by a volcano.
29Sample 3: Igneous Sedimentary Metamorphic Click on the Rock Type to make your choice.IgneousSedimentaryMetamorphicQuit
31Incorrect. Let’s look at the sample again: Next Quit This is an Igneous rock. Why?The main thing to notice here is the presence of large crystals which indicate that this rock was formed deep in the Earth.
32Congratulations!You answered all the items correctly! Great Job! Present the code to your instructor full credit for the tutorial.Code: GEOLOGYPlease click the quit link to reset the tutorial for the next person.Quit
33Not Bad… Retry Quit You only answered one Incorrectly. Hang in there and just try again. I’m sure you will do better next time.Retry Quit
34Not too Good… Retry Quit You only answered one correctly. Hang in there and just try again. I’m sure you will do better next time.Retry Quit
35Ouch! Retry Quit You did not answer any correctly. Don’t be crushed just regroup and try again. I’m sure you will do better next time.Retry Quit