Mr. PerezCHAPTER 8 SECTION 2IGNEOUS AND SEDIMENTARY ROCKS

CHAPTER 8 SECTION 3METAMORPHIC ROCKS AND ROCK CYCLE

Lava- molten rock material that exists at or above Earth’s surface

Igneous rock- rock formed when melted rock material from inside Earth cools

Extrusive- melted rock material cools on Earth’s surface

Intrusive- melted rock materials cools below Earth’s surface

Sedimentary rock- sediment collected in layers and compacted together

SECTION 2 VOCABULARY

Igneous RocksType Form from

molten rock called

Have cooling rate

that is

Have crystal size that is

Extrusive Lava Fast Small

Intrusive Magma Slow Large

IGNEOUS ROCK DETAILS

Igneous Rocks can be

Light colored

HaveHigh silica

content

Are called Granitic

Dark colored

HaveLow silica content

Are calledBasaltic

ORGANIZE IGNEOUS ROCKS

Detrital Chemical OrganicForm from Made of grains

of minerals or other rocks

Dissolved mineral in seawater, geysers, hot springs, or salty lakes

Living matter that has died

How form Moved and been deposited in layers by water, ice, gravity or wind

Evaporation or other chemical processes

Piled up and compressed into rock

Where form Land or water Water Land or oceanExamples Sandstone,

Shale, Conglomerate, Siltstone

Halite Chalk, coal, limestone

CLASSIFY SEDIMENTARY ROCKS

Pressure- force applied over a given areaMetamorphic rock- new rocks that form when existing

rocks are heated or squeezed but not meltedFoliated- rocks that have visible layers or elongated

grains of mineralNonfoliated- rocks that do not have distinct layers or

bands of minerals Rock cycle- cycle that describes how different kinds

of rock are related to one another and how rocks change from one type to another

SECTION 3 VOCABULARY

Conditions of Metamorphic Rock Formation

Temperature High

Pressure High

Time Millions of years

SUMMARIZE METAMORPHIC ROCKS

DRAW METAMORPHIC ROCKS

Foliated rocks include:

DRAW METAMORPHIC ROCKS

slategneiss

schist

phyllite

Nonfoliated rocks include:

DRAW METAMORPHIC ROCKS

quartzite

marble

soapstone

http://www.learner.org/interactives/rockcycle/diagram.html

ROCK CYCLE INTERACTIVE

Chapter 8 vocabulary quiz on A: 12/10 or B:12/11 Band kids will take it during the next class period

Mighty Mineral Mini Project due A: 12/10 or B: 12/11

Bring in old crayons, aluminum foil, wax paper and pencil sharpeners A: 12/10 or B: 12/11

Rock cycle quiz on A: 12/12 or B: 12/13 Study the diagram on p. 237. Be able to describe it in words and fill in the words on

the arrows

REMEMBER!

Florida Science Grade 7Glencoe Science & McGraw Hill Publishing

Google images

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