bellringer: get your clickers and a coach book. complete lesson 5 in the coach book. read the...
TRANSCRIPT
Bellringer: Get your clickers and a Coach book. Complete Lesson 5 in the Coach Book. Read the information and answer the 4 questions. Put your answers in the clicker.
Review Rock Cycle Worksheet (SP#2)Notes on Igneous Rocks (SP#3)
TODAY’S AGENDA…
What is created when sedimentary rock is under heat and pressure?
What is created when igneous rock is weathered or eroded?
What is created when sedimentary rock is melted?
What is created when metamorphic rock is melted and then cooled?
UNDERSTANDING THE ROCK CYCLE
What is created when igneous rock is under heat and pressure?
What is created when metamorphic rock is weathered and eroded?
What is created when magma cools?
What is created when sediment is compacted and cemented?
UNDERSTANDING THE ROCK CYCLE
Book on page 62Paper (Study Pack #3)
WHAT YOU NEED…
Study Pack #3
IGNEOUS ROCKS
I can recognize magma and lava as the materials that cool to form igneous rocks.
I can contrast the formation of instrusive and extrusive igneous rock.
I can contrast granitic, basaltic, and andesitic igneous rock.
TODAY’S GOALS…
Layers of the EarthCrust – outer most layerMantle – molten rock (magma)Outer Core – melted metalInner Core – solid metal ball that spins
INSIDE THE EARTH
INSIDE THE EARTH
When hot magma cools and hardens it forms igneous rockIgneous means “fire”
FORMATION OF IGNEOUS ROCKS
Magma comes from deep below Earth’s surface and is pushed upward because it is less dense than surrounding rock
When magma reaches earth’s surface it is called lava
FORMATION OF IGNEOUS ROCKS
Split into two groupsIntrusive Igneous RocksExtrusive Igneous RocksHow do they compare?
TYPES OF IGNEOUS ROCKS
Figure 6 on page 63Rocks that form from magma below the surfaceFound only when the layers of rock and soil above them are worn away
Takes a long time for them to coolCreate visible mineral grainsCoarse grained
INTRUSIVE ROCKSINTRUSIVE ROCKS
INTRUSIVE ROCKS
Formed as lava cools on the Earth’s surface
Air and water cause it to cool more quicklyKeeps mineral grains from growing large
Fine grained
EXTRUSIVE ROCKSEXTRUSIVE ROCKS
EXTRUSIVE ROCKS
COMPARE THEM!
Page 64What is the difference between intrusive and extrusive igneous rock?
TYPES OF IGNEOUS ROCKS
Some rocks cool so quickly they have few or no mineral grains present
Some of the gases can also be trapped in the rocks and form holes
VOLCANIC GLASS
You can also classify these rocks by the magma from which they formBasalticAndesiticGranitic
What are the differences?
CLASSIFYING IGNEOUS ROCKS
DenseDark coloredMade up of iron and magnesiumBlack beach in Hawaii
BASALTICBASALTIC
Light-coloredLower density than basalticThick and stiffLots of silicaCan cause explosive eruptions
GRANITICGRANITIC
Characteristics between basaltic and granitic
ANDESITICANDESITIC