Three Types of Rock Ppt

Do Now: Observe the specimen on your desk

1. What is the specimen called

2. Describe all its characteristics such as color, texture, size, hardness.

3. Just by looking at your specimen can you tell how it was formed?

Big Idea # 8:

• Essential Question 1: What are the three types of rocks? How do they form?

• Essential Question 2: What is the difference between intrusive and extrusive rocks?

• Essential Question 3: How do rocks get recycled by the earth processes?

• Essential Question 4: How does a rock compare to a mineral?

Chapter 5 Rocks

Classifying Rocks

Cornell Notes: Rocks

What characteristics are used to identify rocks?

Question/ Vocabulary•When studying a rock sample, geologists observe the rock’s•Color•Texture•Determine its mineral composition

Notes

Cornell Notes: Texture

How can we use texture to describe rocks?

Question/ Vocabulary•The terms used in

rock description are:Grain size

Fine-grainedCoarse-grained

Grain shapeSmooth Jagged

Grain pattern bandednonbanded

Notes

Figure 3 Texture helps geologists classify rocks. Forming Operational Definitions – Looking at the rocks below, describe the characteristics of a rock that help you define what a rock’s “grain” is.


What are the three major groups of rocks?

Question/ Vocabulary

• Igneous rock• Sedimentary

rock• Metamorphi

c rock

Notes


What are the Igneous Rocks?


• Igneous rockForms from the cooling of molten rock – either magma below the surface or lava at the surface

Notes


How do scientists classify Igneous Rocks?


Igneous rocks are classified two different ways:

1. Where they were formed

2. What they are made from (mineral composition)

Notes


Intrusive Igneous Rocks


•Igneous rocks that form below the Earth’s surface are called intrusive igneous rocks (or plutonic).

Notes


Extrusive Igneous Rocks


•Extrusive igneous rocks, or volcanics, form when magma makes its way to Earth's surface. The molten rock erupts or flows above the surface as lava, and then cools forming rock.

Notes

http://www.windows.ucar.edu/tour/link=/earth/geology/images/aa_pahoehoe_lg_jpg_image.html

Do Now: Answer Questions in notebook1. In your own words define Igneous Rock?2. Describe what an Igneous Rock will look and feel like?3.What is one example of a Igneous Rock?


What are sedimentary rocks?

Question/ Vocabulary• Sedimentary

rockForms when particles of other rocks or the remains of plants and animals are pressed and cemented togetherForms below the surface

Notes


What are sedimentary rocks?

Question/ Vocabulary• Igneous rocks are the

most common rocks on Earth, but because most of them exist below the surface you might not have seen too many of them.

• 75 percent of the rocks exposed at the surface are sedimentary rocks.

Notes


What are Metamorphic Rocks?

Question/ Vocabulary Metamorphic rock• Forms when an existing

rock is changed by heat, pressure, or chemical reactions• Most metamorphic rock

forms deep underground• Forms when particles of other rocks or the remains of plants and animals are pressed and cemented together• Forms below the surface

Notes

Foldable (Front Cover)

Vocabulary Definitions

Mineral

Igneous Rocks

Sedimentary Rocks

Metamorphic Rocks

Foldable (Inside)Examples/ sketches

Characteristics and formation

Vocabulary Definitions

CrystalGemOreExtrusiveIntrusiveDetrital RocksChemical RocksOrganic RocksFoliatedNon Foliated

Do Now: Answer questions below1. When magma undergoes crystallization above

ground, what type of rock results? – A. Intrusive igneous rock – B. Extrusive igneous rock – C. Metamorphic rock – D. Sedimentary rock

• Which of the following rock types form from placing other rocks under heat and pressure? – A. Sedimentary rock – B. Metamorphic rock – C. Intrusive igneous rock – D. Extrusive igneous rock


What processes make & destroy rocks?


•Geological processes such as erosion & deposition influence the type of rock that is formed on Earth’s surface

Notes


What is Sediment?


• small particles (usually dirt) that was suspended in water and has settled to the bottom

Notes


What is Erosion?


• is the process of removing sediment from its original location. Usually carried away by water or air; (it is displaced

Notes

What is Deposition?

Question/ Vocabulary• is the sediment that

is carried away (or displaced) by erosion, is dropped off in a new location.

Notes

Feeling the Heat & Pressure

• Sediment that is buried, can be squeezed by weight of layers on top of it to form sedimentary rock.

• When the pressure & temperature is high enough, the rock can change into metamorphic rock.

• If the rock gets hot enough inside the earth, the rock melts. The melted rock becomes magma; which then cools & forms igneous rock.

Parent Rock Granite Shale Sandstone

Daughter Rock

Gneiss Slate Quartzite

Igneous Rock

Metamorphic Rock

Sedimentary Rock

Magma

melting

melting

Weathering

cooling

Weathering

sediment

Heat & pressure

Heat & pressure

Weathering

Compaction & cementation

Draw the rock cycle in your notebook

Cornell Notes: Rock Cycle

What is the rock cycle?


•The Rock Cycle refers to the constant sequence of one type of rock turning into another.

Notes

Click Here for an Animation that Further Explains the Rock Cycle

http://www.classzone.com/books/earth_science/terc/content/investigations/es0602/es0602page02.cfm

http://www.classzone.com/books/earth_science/terc/content/investigations/es0602/es0602page02.cfm

Rock Cycle Project: Due Monday • Make a children’s book about rocks. Book should

cover the 3 different type of rocks, how they are formed, how they are classified, examples of each type, and the rock cycle. Have both words (text) and pictures (drawn and colored or pictures). Try to put it into a story rather than a science text book format.

• Write a 3+ page report about 1-2 rocks/minerals. Research the rock/mineral on the web. Describe what type of rock it is, how it was formed, what it’s uses are, how/if it is mined, location, trade value/ worth, and what it looks like. Include a bibliography “Time New Roman 12 inch font if typed.”

Three Types of Rock Ppt

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