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What goes up and down the stairs without moving? - PowerPoint PPT Presentation


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You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?. What goes up and down the stairs without moving?.

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Presentation Transcript
slide1

You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?

What goes up and down the stairs without moving?

I run over fields and woods all day. Under the bed at night I sit not alone. My tongue hangs out, up and to the rear, awaiting to be filled in the morning. What am I?

slide3

Lets review minerals

  • What are the 5 things a mineral has to be?
  • Which of these gives the minerals their physical properties
  • What are 6 identifying features of a mineral
  • Most rocks are made up of ___________ or more minerals
  • Name Three classes of minerals?
          • 1.
          • 2.
          • 3.
slide7

Poly-mineralic

Mono-mineralic

made of

two or more

minerals

made of

one mineral

slide8

Most Rocks Are

Poly-mineralic

slide9

Three Classifications

of Rocks are:

igneous

sedimentary

metamorphic

slide11

Sedimentary Rocks

Key Concept #1

Most sedimentary rocks are made of pieces (sediments)

( clasts )

of other rocks.

Image #2

Image #1

slide12

Key Concept #2

Name two processes that

form sedimentary rocks

Compaction

Cementation

clasts held

together by

minerals

(cement)

the weight of

overlying sediments

forces particles

together

slide13

Key Concept #3

In what type of environment are most

sedimentary rocks formed?

watery

slide14

Key Concept #4

Key Identifying Features of

Sedimentary Rocks

Strata

Clear Layering of Sediments

Image #3

Image #1

Image #2

slide15

Key Concept #4

Key Identifying Features of

Sedimentary Rocks

Clasts

pieces of other rocks

Image #2

Image #1

slide16

Key Concept #4

Key Identifying Features of

Sedimentary Rocks

Fossils

the remains of once-living organisms

Image #3

Image #1

Image #4

Image #2

slide19

Igneous Rocks

Key Concept #1

How are igneous rocks formed?

the melting and

solidification of

magma

slide20

Igneous Rocks: Key Concept #2

Name two places where igneous rocks form

slide21

Volcanoes

Rifts/Ridges

slide22

Igneous Rocks: Key Concept #3

What determines crystal size?

slide24

crystal size

cooling time

slide25

Large Crystals Indicate

long cooling time

Small Crystals Indicate

short cooling time

slide26

Igneous Rocks: Key Concept #4

What’s the difference between

extrusive and intrusive igneous rocks?

slide27

Intrusive

Extrusive

form on or near the

surface

(small crystals)

form below the

surface

(large crystals)

slide28

Igneous Rocks: Key Concept #5

Characteristics used to classify igneous rocks

slide29

Key Concept #5

Characteristics used to classify igneous rocks

texture

glassy

}

extrusive

fine

slide30

Key Concept #5

Characteristics used to classify igneous rocks

texture

coarse

}

intrusive

very coarse

slide31

Key Concept #5

Characteristics used to classify igneous rocks

color

dark

light

slide32

Key Concept #5

Characteristics used to classify igneous rocks

density

low

high

slide33

Key Concept #5

Characteristics used to classify igneous rocks

composition

mafic

contains Fe and Mg

felsic

contains Al

slide34

Igneous Rocks: Key Concept #6

Key Identifying Features of Igneous Rocks

slide35

Glassy Texture

usually black in color

Interlocked Grains

the grains have been melted

and are now physically connected

slide37

Metamorphic Rocks

Key Concept #1

How are metamorphic

rocks formed?

extreme heat

and/or

pressure

slide38

Metamorphic Rocks

Key Concept #2

If melting occurs,

it is classified as

an

MELTING DOES NOT OCCUR!

Igneous Rock

slide39

Metamorphic Rocks: Key Concept #3

What is the difference between

Regional and Contact Metamorphism?

slide40

Regional Metamorphism

Large geographic area

Example:

where mountains form

slide41

Contact Metamorphism

small geographic area

Example:

when rocks come in

contact with magma

slide42

Metamorphic Rocks: Key Concept #4

Key Identifying Features of Metamorphic Rocks

slide43

Foliation

Image #1

Image #2

banding of minerals

usually black and white

Image #3

slide44

Distorted Structure

folded layers

Image #3

Image #1

Image #2

slide45

Key Identifier Minerals

Dark

Red

Color

Garnet

Shiny,

flaky

Mica