1. Monday, October 30th Schedule:
ISN 58: Rock introduction ISN 59: Igneous Rocks
Objective:
I can describe how igneous rocks are formed
Homework:
Complete ISN 58, 59
Read pages 89 to 95
Please have on desk:
ISN, agenda, pencil

2. What is a rock?
A rock is a naturally formed solid that is usually made up of one or more types of minerals

3. Rocks vs. Minerals
Rocks 1.Proportions of minerals vary 2. Minerals can be jumbled together 3.None to 1 or more minerals can be present
Minerals
Is the same elements in the same proportions
There is an orderly crystal structure

4. Examples of Rocks Rocks with no minerals 1 or more minerals
OBSIDIAN – glass like and does not have a crystal structure COAL- is made of dead plants
LIMESTONE- can be made entirely of calcite GABBRO- made of several types of minerals

5. Our world is built of rocks
Rock is so common and has many purposes
They last a long time
Building houses and skyscrapers
Sources of metal like iron aluminum and copper
Carvings of statues and art
Pavement on roads and highways
Ancient structures, monuments and sculptures were made from rock
Great wall of china
Pyramids in Egypt
Mount Rushmore

6. IGNEOUS ROCKS Rocks that form when molten (melted) rock cools and becomes a solid Temperatures deep within the Earth are so hot (1400 °F °F) that rock will melt
MAGMA
LAVA
Molten Rock that is below the surface of the Earth
When magma reaches the surface of the Earth it is called Lava

7. 1. Composition Igneous rocks are classified by how much silica content they have
Igneous rocks are mostly made of silicate minerals (silica and oxygen)
Color will give you a good estimate of the amount of Silica
HIGH LEVELS OF SILICA
LOW LEVELS OF SILICA
Color= Light
Color= Dark
GRANITE
BASALT
RHYOLITE
GABBRO

8. INTRUSIVE IGNEOUS ROCK
2. Origins of Igneous rocks Magma and Lava form different types of igneous rocks
INTRUSIVE IGNEOUS ROCK
EXTRUSIVE IGNEOUS ROCK
One that forms when magma cools within the Earth (INside) Granite same composition Same composition Gabbro
One that forms when lava cools on Earth surface (EXterior) Rhyolite Pumice Basalt

9. Intrusive- Stay below the Earth Extrusive- At the surface
3.TEXTURE- the size of its mineral crystals -Depends on how fast the magma or lava cool
Intrusive- Stay below the Earth
Extrusive- At the surface
LARGE CRYSTALS FORM FROM MAGMA
The interior is very hot
High temperature allows for slow cooling
Slow cooling allows time for LARGE CRYSTALS
SMALL CRYSTALS FORM FROM LAVA
The surface is cooler than inside Earth
Low temperatures cause lava to cool fast
There is no time for large crystals to form

10. ROCK FORMATIONS Igneous rocks make long-lasting landforms
INTRUSIVE ROCK FORMATIONS
EXTRUSIVE ROCK FORMATIONS
Magma can slowly cool inside a volcano.
Over time, wind and water can wear away surrounding rock to expose the intrusive rock.
These landforms are harder and longer lasting than other types of rocks
Lava erupts in different ways
1. low silica lava, like basalt, flows easy in thin layers (Hawaii, Columbia Plateau)
2. High silica lava builds steep cone shaped volcanoes and erupt explosively (Mt. St. Helens)

11. Devils rock and Ship rock
Are examples of Intrusive Rock Formations

12. Low Silica lava flow form extrusive rock formation in thin layers
HAWAIIAN ISLANDS

13. Tuesday, October 31st Schedule: ISN 60: Sedimentary rock notes
ISN 61: 3.3 RSG
Objective: I can understand that sedimentary rocks form from earlier rocks
Homework:
Read pages 96 to 101
Complete ISN 60, 61
Please have on desk:
ISN, agenda, pencil

14. 3.3 Sedimentary Rocks Some rocks form from rock particles
Most sedimentary rocks form from loose material that gets pressed together.
Sediments are materials that settle out of water or air.
Sediments can be loose pieces of rocks and minerals or even plant and animal remains.

15. Types of Sedimentary Rock
Made of other rock particles, classified by particles size.
Big particles (pebbles and bigger) conglomerate, puddingstone
Smaller particles – sandstone, shale, mudstone.
Made of plants or shells
Plants (formed in swamps) coal
Shells (dissolved or not) limestone, chalk

16. Wednesday, November 1st Schedule: ISN 62: Metamorphic rock notes
ISN 63: 3.4 RSG
Objective: I can describe and classify metamorphic rocks
Homework:
Complete ISN 62, 63
Please have on desk:
ISN, agenda, pencil

17. 3.4 Metamorphic Rock Heat and Pressure can change a rock
Because pressure and temperature increase with depth, rocks change more when they are buried deeper in the crust.
The deeper the rock, the more heat and pressure it is exposed to, the more it changes.

19. Foliated vs. Nonfoliated Rocks
Foliation is an arrangement of minerals in flat or wavy parallel bands.
Foliation occurs when rocks are under pressure.
Rock must contain more than one type of mineral.
Nonfoliated rocks occur when heat and pressure are applied to rocks that contain only one kind of mineral
Limestone becomes Marble

20. Foliated vs. Nonfoliated Rocks

21. Thursday, November 2nd Schedule: ISN 64: Rock classification lab
Objective: I can identify a rock as igneous, sedimentary, or metamorphic
Homework
Complete activity
What kind of rock is this?
Please have on desk:
ISN, agenda, pencil

22. Friday, November 3rd Schedule: ISN 65: The Rock Cycle
Objective: I can describe the processes of the rock cycle
Homework
Complete ISN 65
Please have on desk:
ISN, agenda, pencil