Transcript Chapter 2 Notes

Minerals and Rocks
Table of Contents
Properties of Minerals
Classifying Rocks
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
The Rock Cycle
Properties of Minerals
Are They or Aren’t They?
To be classified as a mineral, a substance must satisfy five
requirements.
Properties of Minerals
Complete the graphic organizer to show how a geode forms in four steps.
Properties of Minerals
Where Minerals Form
Minerals can form by crystallization of magma and lava or by crystallization of
materials dissolved in water.
Properties of Minerals
Earth’s Mineral Resources
Classifying Rocks
Rock Origins
Rocks are classified by the way they formed.
Igneous Rocks
Igneous Rock Origins and Textures
The texture of igneous rock varies according
to its origin.
Igneous Rocks
Mineral Composition of Diorite
Diorite is a coarse-grained intrusive igneous rock.
It is a mixture of feldspar and dark-colored minerals such as hornblende
and mica.
Sedimentary Rocks
How Sedimentary Rock Forms
Sedimentary rocks form through a series of
processes over millions of years.
Sedimentary Rocks
Put the terms listed in the word bank in the proper sequence to show how
mountains can change into sedimentary rock.
Sedimentary Rocks
Organic Rocks
How do coal and limestone form?
Metamorphic Rocks
Metamorphic Rock
Great heat and pressure can change one type of rock into another. Are
these types of rock sedimentary, igneous, or metamorphic? Which rock
can form from the other rock?
Why do Rocks Change?
What causes the changes in the rocks?
The Rock Cycle
The Rock Cycle
Through melting,
weathering and erosion,
and heat and pressure, the
rock cycle constantly
changes rocks from one
type into another type.
So . . .
The forces IN the earth causing the changes are caused by…
And, the forces on the SURFACE of the Earth causing changes
are . . .
The Rock Cycle
The Rock Cycle and Plate Tectonics
New rock forms on the ocean floor at the mid-Atlantic ridge. Here, two
plates move apart.