College Level Geology

Page 41

itself can seep into tiny cracks in rocks in liquid form and then expand in its ice form to widen these cracks substantially. Just imagine what a glacier can do! The atmosphere is likewise affected by the lithosphere. The fossil fuels we burn all the time (such as gasoline, diesel fuel, and coal) are emitted into the air. These fossil fuels ultimately come from decaying vegetation deep beneath the earth. This was living vegetation millions of years ago but only the carbon and hydrogen in the plants survive as crude oil in the present time. When we burn them, the carbon dioxide, and other gases cause retention of heat around the earth. This changes our various climates and really messes up the rest of the planet because of what we refer to now as "global warming". Global warming affects the rest of the earth's spheres.

THE INTERNAL EARTH Earth is really complex inside. There are several inner layers beneath the part of the earth we see. While we can't go down to the center of the earth, we can do a lot more than we used to so we can figure out what would happen if we did. There are several layers we can identify beneath the earth's outer crust. The crust is just the first outside layer. It's more complicated than you'd think. Inside that is the mantle, which is more fluid than the rocky outer surface. Inside that is an inner core that is very liquid. Finally, you have the solid inner core. This area inside the earth's center must be solid because of the weight of the rest of the earth being so great that it has no choice to be solid. Figure 5 depicts this image for you:

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Course Questions

28min
pages 259-299

Chapter 15: Questions and Answers

1min
pages 252-254

Summary

6min
pages 255-258

Key Points in this Chapter

0
page 251

Glacial Lakes

2min
pages 249-250

Landforms caused by Glaciers

2min
pages 247-248

Chapter 14: Questions and Answers

1min
pages 242-244

Key Points in this Chapter

1min
page 241

Geothermal Features

2min
pages 239-240

Coastlines

5min
pages 236-238

Hydrology-based Earth Features

1min
page 235

Channel Types in Streams

1min
page 232

Surface Water Explained

4min
pages 228-229

Fluvial Processes

1min
page 230

Sediment in Streams

2min
page 231

Water Basins

0
page 227

Chapter 13: Questions and Answers

1min
pages 222-224

Avalanches

3min
pages 219-220

Earth Flows

1min
page 218

Key Points in this Chapter

0
page 221

Can Landslides be Predicted?

1min
page 217

Types of Landslides

3min
pages 215-216

Chapter 12: Questions and Answers

1min
pages 210-212

Rock Folding

2min
pages 204-206

Folding and Mountain Building

1min
pages 207-208

Key Points in this Chapter

1min
page 209

Faults and Joints

2min
pages 201-203

Strike and Dip Explained

0
page 200

Ductile versus Fragile Rock

3min
pages 198-199

Chapter 11: Questions and Answers

1min
pages 194-196

Earthquake Predictions

0
page 192

Earthquake Measurements

1min
page 188

Measuring Magnitude of an Earthquake

3min
pages 189-190

Key Points in this Chapter

0
page 180

Metamorphic Environments

3min
pages 177-179

Earthquake Features

1min
page 187

Conditions of Metamorphism

1min
page 176

Marble

1min
page 175

Schist

1min
pages 172-173

Gneiss

1min
pages 169-170

Non-clastic Rocks

0
page 158

How Sedimentary Rocks are Structured

1min
page 159

Key Points in this Chapter

0
page 162

Detrital Sedimentary Rocks

1min
page 157

Naming Sedimentary Rocks

2min
pages 154-156

Sedimentary Rock Basics

1min
page 153

Chapter 8: Questions and Answers

1min
pages 150-151

Key Points in this Chapter

0
page 149

Soil Orders

2min
pages 145-146

Basic Soil Types

1min
page 147

Ore Deposits and Weathering

1min
page 148

Soil Formation and Classification

1min
page 144

Soil

2min
pages 142-143

Wind and Desert Features

1min
page 141

Weathering Rates

1min
page 140

Chapter 7: Questions and Answers

1min
pages 134-135

Types of Chemical Weathering

2min
pages 138-139

Key Points in this Chapter

0
page 133

Volcano Seismology

2min
pages 131-132

Lava Flows and Pyroclastic Flows

6min
pages 127-130

Types of Volcanoes

2min
pages 124-125

Volcano Anatomy

2min
pages 122-123

Key Points in this Chapter

0
page 118

Diamonds and their Origin

2min
pages 116-117

How to Name Igneous Rocks

1min
pages 113-114

Intrusive Igneous Rock

0
page 115

Igneous Textures

1min
page 112

Silicates in Igneous Rock

0
page 111

Key Points in this Chapter

0
page 104

Nonsilicate Minerals

4min
pages 101-103

How Magma turns to Rock

3min
pages 108-110

Classifying Minerals

3min
pages 96-97

More on Silicate Minerals

2min
page 100

How Minerals Form

3min
pages 93-95

Chapter 4: Questions and Answers

1min
pages 86-87

Key Points in this Chapter

1min
page 85

Measuring Plate Motion

1min
pages 83-84

Examples of these Phenomena in Geology

0
page 82

Plate Tectonic Basics

1min
pages 78-79

The Cenozoic Era

1min
page 64

Dating Rocks

8min
pages 65-69

Fossils and Fossil Types

2min
pages 70-72

Key Points in this Chapter

0
page 73

The Mesozoic Era

1min
page 63

Proterozoic Era

2min
pages 58-59

The Continents

6min
pages 49-53

The Crust

1min
page 43

The Paleozoic Era

2min
pages 60-62

The Inner Core

0
page 45

The Rock Cycle

0
page 46

Major Features of the Ocean Floor and Continents

2min
pages 47-48

The Internal Earth

2min
pages 41-42

The Oxygen Catastrophe

1min
page 38

The Earth's Spheres

1min
pages 39-40

Key Points in this Chapter

0
page 31

S through Z

3min
pages 25-26

I through M

2min
pages 21-22

E through H

2min
pages 19-20

Rock Types and What they Mean

3min
pages 27-30

N through R

2min
pages 23-24
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