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Ch 3 Notes Mr. Russo Beaumont High School. Ch 3 Vocab Matrix – Pg 30 Igneous Rock Lava Magma Weathering Sediments Sedimentary Rock Metamorphic Rock Intrusive.

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Presentation on theme: "Ch 3 Notes Mr. Russo Beaumont High School. Ch 3 Vocab Matrix – Pg 30 Igneous Rock Lava Magma Weathering Sediments Sedimentary Rock Metamorphic Rock Intrusive."— Presentation transcript:

1 Ch 3 Notes Mr. Russo Beaumont High School

2 Ch 3 Vocab Matrix – Pg 30 Igneous Rock Lava Magma Weathering Sediments Sedimentary Rock Metamorphic Rock Intrusive Igneous Extrusive Igneous Erosion Compaction Cementation

3 Objective – Notes Ch 3.1(Pg 32) We will be able to describe how the 3 major types of rocks are formed

4 Rock Rock – A solid mass of mineral or mineral like matter that occurs naturally

5 What are the 3 major types of rocks? Igneous Sedimentary Metamorphic

6 Igneous Rock Igneous Rock – Igneous rock forms when molten rock (magma/lava) cools and becomes solid

7 Magma Magma – Molten rock below the surface

8 Lava Lava – Molten Rock above the surface

9 Weathering / Sediments Weathering – When rocks are broken down to bits and pieces Sediments – The bits and pieces that occur due to weathering

10 Sedimentary Rock Sedimentary Rock – Rock that forms from sediments being compacted or cemented together

11 Metamorphic Rock Metamorphic Rock – Forms under intense heat and pressure

12 Rock Cycle Rock Cycle – The cycle that shows how rocks change from one type to another. TAKES A VERY LONG TIME

13 What powers the Earth’s Rock Cycle? Igneous / Metamorphic Rock form due to the heat from the INTERIOR OF THE EARTH. Sedimentary Rock forms due to weathering which is caused by THE SUN

14 Objective – Notes 3.2 (Pg 35) We will be able to describe the characteristics that differentiate intrusive and extrusive igneous rocks

15 What does the Latin word “ignis” mean? Ignis means Fire Igneous rock comes from molten lava or magma (very hot)

16 Intrusive Igneous Intrusive Igneous – Rocks that cool or harden below the surface. Common Example - Granite

17 Extrusive Igneous Extrusive Igneous Rocks – Rocks that cool or harden above the surface Common Example - Rhyolite

18 Question Does magma form an extrusive or intrusive igneous rock? Intrusive Does lava form an extrusive or intrusive igneous rock? Extrusive

19 Characteristics - Igneous IntrusiveExtrusive Made of what?Magmalava How fast does it cool? SlowFast Crystal SizeLargeVery Small TextureCoarse –GrainedFine-Grained

20 What igneous rock is made of magma? How fast does intrusive rock cool? What is the texture of a extrusive igneous rock?

21 How does the rate of cooling affect the texture? Cools very slow – Rough texture (coarse-grained) Cools very fast – Smooth texture (fine-grained)

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23 Objective – Notes 3.3 (Pg 39) We will be able to describe the relationship between compaction, cementing, clastic and chemical sedimentary rocks.

24 Ch 3.3 Erosion Erosion – Weathering and removal of rock ◦ Water, wind, ice, gravity

25 Deposition Deposition – When rock sediment is deposited into a new area ◦ Largest sediments deposit first ◦ Small sediments deposit last

26 Compaction Compaction – A process that squeezes or compacts sediments

27 Cementation Cementation – When dissolved minerals are deposited in the tiny spaces among the sediments (sediments are glued together)

28 Clastic Sedimentary Rocks Clastic sedimentary Rock – made of weathered bits of rock and minerals

29 Chemical Sedimentary Rocks Chemical Sedimentary Rock – Dissolved minerals become solid in water

30 Are clastic sedimentary formed by compaction or cementing? Chemical sedimentary? Clastic Sedimentary Rock – Compaction Chemical Sedimentary Rock - Cementing

31 What is unique of sedimentary rocks? They give us clues to how, when and where the rock formed. ◦ Bottom layers are the oldest layer ◦ Top layer is the youngest layer

32 What is unique of sedimentary rocks? Fossils are only found in sedimentary rocks.

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34 Objective: 3.4 Notes (pg 42 ) We will be able to describe the 2 types of metamorphic rocks and how they form

35 Ch 3.4 Metamorphism Metamorphism – Existing rocks change by heat and pressure Metamorphic rocks look much different than parent rock

36 Where does most metamorphism take place? High temperatures and pressure A few kilometers (miles) below the surface

37 Contact Metamorphism Contact Metamorphism – Hot magma moves into rock

38 Regional Metamorphism Regional Metamorphism – Large scale deformation – mountain building

39 What are the 3 agents of metamorphism? Heat Pressure Hydrothermal solutions (Very hot liquids)

40 Foliated metamorphic rocks Foliated metamorphic Rocks – Metamorphic rocks with a layered or banded appearance

41 Non-foliated metamorphic rocks Non-foliated metamorphic rock – A metamorphic rock that does not have a banded texture. Ex-marble

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