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Chapter 8 Section 2 Igneous and sedimentary rocks

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1 Chapter 8 Section 2 Igneous and sedimentary rocks
Mr. Perez Chapter 8 Section 3 Metamorphic rocks and rock cycle

2 Section 2 Vocabulary 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

3 Igneous Rock Details Igneous Rocks Type Form from molten rock called
Have cooling rate that is Have crystal size that is Extrusive Lava Fast Small Intrusive Magma Slow Large


5 Organize igneous rocks
Igneous Rocks can be Light colored High silica content Have Are called Granitic Dark colored Low silica content Basaltic Are called


7 Classify Sedimentary rocks
Detrital Chemical Organic Form 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 ocean Examples Sandstone, Shale, Conglomerate, Siltstone Halite Chalk, coal, limestone

8 Section 3 Vocabulary Pressure- force applied over a given area
Metamorphic rock- new rocks that form when existing rocks are heated or squeezed by not melted Foliated- rocks that have visible layers or elongated grains of mineral Nonfoliated- 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

9 Summarize metamorphic Rocks
Conditions of Metamorphic Rock Formation Temperature High Pressure Time Millions of years


11 Draw metamorphic rocks

12 DRAW Metamorphic rocks
Foliated rocks include: slate gneiss phyllite schist

13 Draw Metamorphic Rocks
Nonfoliated rocks include: quartzite soapstone marble


15 Rock cycle interactive

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

17 Glencoe Science & McGraw Hill Publishing
Resources Florida Science Grade 7 Glencoe Science & McGraw Hill Publishing Google images

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