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Earth Revealed
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1.

The Sea Floor

Marine geologists utilize many types of remote research tools to learn about the sea floor and its features. Take note of major sea-floor features: the mid-oceanic range, oceanic trenches, and fracture zones.
Online
2015; 1999
2.

Waves, Beaches and Coasts

Explore the importance of waves in the development of coastal landforms. Take a closer look at how human activity has been impacting coastlines and sea levels.
Online
2015; 1999
3.

Volcanism

Assess the importance of volcanic activity to Earth's geology and climate. Find out how geologists monitor volcanoes and research data in order to protect future generations from the destruction that volcanoes can cause.
Online
2015; 1999
4.

Mass Wasting

Mass wasting is defined as the down slope movement of rock and mud near the earth's surface mainly due to the force of gravity. Consider how this natural process affects property and people.
Online
2015; 1999
5.

Geologic Time

Develop a sense of the vast amounts of time over which geologic processes have been at work. Learn that the calibration of geologic time is attributed to relative age dating and absolute age dating.
Online
2015; 1999
6.

Running Water

The running water flowing from rivers and streams sculpts the surface of the earth. Deduce that rivers are extremely powerful and that though humankind may try, the ability to control rivers is limited.
Online
2015; 1999
7.

The Birth of a Theory

Trace the origins of the concepts of continental drift and sea-floor spreading and their contributions to the plate tectonics theory. Note how seemingly unrelated geological phenomena converge to create Earth's unique geological status.
Online
2015; 1999
8.

Weathering

Watch this program to gain perspective on how minerals and rocks change when subjected to the physical and chemical conditions that exist at Earth's surface through the subtle geologic process of weathering.
Online
2015; 1999
9.

Intrusive Igneous Rocks

Unveil the rock-forming processes of magmas that do not reach Earth's surface but solidify below the earth's crust. Intrusive igneous rocks provide clues that enable scientists to learn more about the evolution of the earth.
Online
2015; 1999
10.

Deserts

Watch this exploration of deserts and their geologic features. The desert is a harsh environment with very little rainfall and extreme temperatures that are transformed by climate change.
Online
2015; 1999
11.

Earth's Limited Resources

This program provides an overview of energy resources. Consider how the depletion of nonrenewable resources has led geologists to search, in fascinating ways, for stores of fossil fuels within the earth and renewable energy resources that can be accessed.
Online
2015; 1999
12.

Mountain Building and Continents

Consider how major mountain belts and continents have evolved. By mapping, measuring, and sampling rocks of regions, geologists discovered how mountains and continents were formed in this worldwide geologic puzzle that is the history of the earth.
Online
2015; 1999
13.

Sedimentary Rocks

Sedimentary rocks are made of fragments of other rocks, and they are an open book to the fascinating history of the physical earth and the changes it has undergone. Watch as this video explores the formation and classification of sedimentary rocks.
Online
2015; 1999
14.

Ground Water

Water is vital to civilization but its supply is limited. Investigate groundwater sources that provide water suitable for drinking and irrigation, and consider steps that are being taken to protect the quality of groundwater.
Online
2015; 1999
15.

Living Through an Earthquake

This video focuses on what was learned by geologists following the earthquake along the San Andreas fault line in 1989 that devastated Loma Prieta and San Francisco. Evaluate suggestions that geologists give for earthquake preparedness.
Online
2015; 1999
16.

Earth's Interior

Gain an understanding of geophysical research by watching this video about the study of the interior of the earth.
Online
2015; 1999
17.

Glaciers

This video focuses on the properties of glaciers and assesses their importance in forming Earth's topography. Note that the amount of ice on the Earth's surface has varied greatly through time as part of the natural geologic cycle.
Online
2015; 1999
18.

Earthquakes

Earthquakes have fascinated and frightened humans for thousands of years. Watch as this video investigates the nature and consequences of earthquakes.
Online
2015; 1999
19.

Minerals

Minerals are raw materials that occur naturally on the earth. Consider the fact that many geologists study minerals to learn about the earth and its history while humankind has endowed minerals with a fundamental role in the growth of civilizations.
Online
2015; 1999
20.

Metamorphic Rocks

The study of metamorphic rocks provides very valuable information about the temperatures and pressures that occur at great depths within the earth's crust. Watch this program to gain perspective on the metamorphic process studied by earth scientists.
Online
2015; 1999