Week 8-10: Rock Cycle

12/12 Tuesday: Igneous RocksWARM UP: What are sedimentary rocks? How do sedimentary rocks form?

LT: I can define “igneous rock” and identify the two types of igneous rocks.

Review: Sedimentary Rocks- Formed from sediments- Compaction and cementation- Layers- Shale, sandstone, and

limestone

Big Question: What was early earth like?- Early earth was very hot and molten- First rocks to form on earth were formed from molten earth material

https://www.youtube.com/watch?v=JgB9q2l4hmA

Earth layersCrust - 5-70 km thick, made of solid rocks

Mantle - 2900 km thick, 84% of earth’s volume, made up of layers of solids and liquids, 500-900 degrees C near crust, 4000 degrees C near core

Outer Core - 2300 km thick, fluid, hot iron and nickel

Inner Core - 1220 km radius (70% of moon), solid, iron

Build “class earth”! https://www.youtube.com/watch?v=IWZky7mXoO0

Magma vs. LavaMagma: molten and semi molten rock BELOW the surface of the earth

Lava: molten rock expelled from a volcano during an eruption (magma being pushed out to earth’s surface)

Igneous rocksFormed from FIRE

Defined by composition and texture

- Composition:- Texture:

Two main types: intrusive and extrusive

Intrusive Igneous Rock- Form from magma- Crystallize (form) below the

earth’s surface- SLOW cooling- LARGE crystals form

Examples: Granite, dunnite, diorite, gabbro

Extrusive Igneous Rock

- Forms from lava on the earth’s surface (after volcano eruption)

- FAST cooling- SMALL crystals form - Some cool so quickly they form

glass!

Examples: basalt, obsidian, pumice, rhyolite, scoria

Igneous Rockshttps://www.youtube.com/watch?v=PrN7jygu4cQ

Work Time: Igneous Rock Questions

Use pg. 42-43 in textbook to answer questions!

12/14 Wednesday: field tripPeriods 1 & 2: Study hall and finish any missing assignments

12/13 Thursday: Metamorphic rocks

WARM UP: What are igneous rocks? What are the two different categories of igneous rocks?

LT: I can define “metamorphic rock” and identify different types of metamorphic rocks.

Metamorphic Rocks- Changed rocks- Rocks modified by heat,

pressure, and chemical processes

- Two main types: foliated and non-foliated metamorphic rock

Metamorphic Rockshttps://www.youtube.com/watch?v=ANflWY8VYnM

Foliated Metamorphic Rock- Layered or banded

appearance- Produced by exposure to

heat and directed pressure- Ex: gneiss, phyllite, schist,

slate

Non-foliated Metamorphic Rock

- NO layered or banded appearance- Formed from high temperatures but low pressure- Ex: Hornfels, marble, quartzite, novaculite

Regional Metamorphism - PRESSURE- Tectonic forces have

compressed earth’s crust and put high pressure on rocks

Contact Metamorphism - HEAT- Rocks formed from

extreme temperatures

- Occurs when hot magma has intruded on a surface rock

Rock ID Lab!

12/15 Friday: Rock CycleWARM UP: What are igneous rocks and how do igneous rocks form? What are metamorphic rocks and how do metamorphic rocks form?

LT: I can explain how the rock cycle works and how rocks change form.

Rock Cycle Rapflocabulary

Rock Cycle: Rock Paper Scissors!

https://www.youtube.com/watch?v=BsIHV__voMk

Rock CycleTransformations that change one type of rock to another

I & M -- S by being weathered into sediment

M & S -- I by being melted into magma inside the earth

I & S -- M by putting under heat and pressure

The rock cycle is always working!!

Rock Cycle Game!

Instructions:

- Set up stations on your table with your table group- Start at one station, record where you are- Roll dice- Follow instructions- Complete worksheet- See where your rock journey takes you!

Complete: Rock Cycle WS and Comic