3 1 rock cycle

•List the forces that power Earth’s rock cycle... These three groups are igneous, metamorphic, and sedimentary.. process that shows how the groups interact is called the rock cycle... Th

1 What charges do protons, neutrons, and

electrons have?

2 Minerals that form from magma form as the

result of _

3 Why is color not a useful identification property?

4 What is a mineral’s streak?

5 What is the most common mineral group?

1 Recent global warming appears to be the result of

a Changes in global wind patterns

b A decrease in the greenhouse effect

c Increases in greenhouse gases in the air

d Changes in Earth’s revolution around the sun

2 Melting ice caps result in which of the following?

a A rise in sea level

b A fall in sea level

c Colder temperatures

d Less precipitation

3 In a dry climate, yearly precipitation is

a Less than the rate of evaporation

b Greater than the rate of evaporation

c Greater in a desert than in a steppe

d Less than in a polar climate

3.1 The Rock Cycle P.64

Today, you will be able to:

• Define the term rock.

•Identify the three major types of rocks and explain how

they differ.

•Describe the rock cycle.

•List the forces that power Earth’s rock cycle.

http://www.public-domain-image.com/nature-landscape/canyon/slides/bryce-canyon-hoodoos.jpg

Vocabulary

• Rock

• Igneous rock

• Sedimentary rock

• Metamorphic rock

• Rock cycle

• Magma

• Lava

• Weathering

• Sediments

which they were formed

probably formed near the ocean and volcanic

rocks give clues to where volcanic activity has

occurred on Earth

mineral-like matter occurring naturally as part of Earth

and can be classified based on their composition and texture

groups based on how they formed These three groups are igneous, metamorphic, and

sedimentary

process that shows how the groups interact is called the rock cycle

The Rock Cycle

material beneath Earth’s surface

hardens (crystallizes) below the surface or during a volcanic

eruption, an igneous rock is formed

the surface is called lava

Igneous Rocks

Obsidian

http://www.oldearth.org/c

urriculum/geology/images

/Obsidian1.jpg

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Granite

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Pumice

The Rock Cycle

surface will eventually

break down

process in which

rocks are physically

and chemically

broken down by

water, wind, and

living things

rock are called

sediments

The Rock Cycle

around Earth by

water, wind, gravity,

and other organisms

sediments are

deposited, they can

be compacted and

cemented together to

form a sedimentary

rock

Sedimentary Rocks

Siltstone

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/1/0/m/7/1/mckittrick9.jpg

http://academics.smcvt.ed u/vtgeographic/textbook/g eology/Sedimentary_laye rs.jpg

The Rock Cycle

exposed to extreme changes in heat and pressure will undergo

a change

a metamorphic rock

Metamorphic Rocks

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/1/0/Y/S/1/rocpicgneiss.jp

g

Gneiss

Slate

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The Rock Cycle

• Where does the energy that drives Earth’s

rock cycle come from?

– Processes driven by heat from Earth’s

interior are responsible for forming igneous and metamorphic rocks.

– Weathering and movement of sediments

are external processes powered by energy from the sun.

• Internal  igneous, metamorphic

• External  sedimentary

The Rock Cycle (page 63)

Post-Test (page 42)

1 What is a rock?

2 What are the three major types of rocks?

3 How do igneous, sedimentary, and

metamorphic rocks differ?

4 What is the rock cycle?

5 What powers the Earth’s rock cycle?