[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how our understanding of the Earth's movements evolved from ancient times and what we know today. Includes some questions to check...

Visit an active volcano site to find out the connection between the movement of the Earth's plates and the processes deep within the Earth's interior. [58:23]

In this activity, students will make observations then construct a "sample" model representation of the Earth's layers. They will compare and contrast the movement and material in each layer explaining the location and what it contains.

This article is an in-depth description of the first Earth Day, and includes the impact the demonstration had on the environmental movement.

Earth Day grew out of the environmental movement in the late 1960s in response to a series of environmental disasters that took lives, marred natural beauty and threatened animal species. An estimated 20 million Americans participated in...

This excellent resource provided by Digital History contains a wealth of information on the environmental movement of the 1960s in America, as well as the rest of the century.

This interactive activity adapted from A Science Odyssey Web site helps you visualize different types of plate tectonic activity and shows the impact this activity has on Earth's surface.

Suppose you placed a camera at a fixed position, took a picture of the sky at the same time every day for an entire year, and overlaid all of the photos on top of each other. What would the sun look like in that combined image? A...

A basic overview of the planet Earth. Links to information about the other planets and objects in our solar system are included.

This site from PBS provides a description of the mechanisms behind the plate movements, types of movements, and the resulting earthquakes, faults, and images and animations of several of the topics presented.

Examine the changes that occur with the moon's movement in relationship to the Earth and Sun with this astronomy simulation.

Instructional module focusing on the hydrological cycle. Discussion includes the movement of water through the different reservoirs on earth and its impact on climate and weather patterns. Site also includes an interactive practice quiz...

Learn about the rotation of the earth, the movement of the moon, and the position of the sun.

A resource to help understand that the movement of the Earth's tectonic plates is caused by convection. The plates' movements cause geologic features on the Earth's surface.

This site is a very simple overview of plate tectonics. It includes a map of all the major plates and a diagram of the layers of the earth.

As part of a larger lesson plan on the the environment and the environmental movement, this lesson focuses on the movement as part of a larger emphasis on social movements in the 1960s. Find information about the history of Earth Day,...

Article outlining the scientific history behind the evolution of theories about measuring time based on the movement of a pendulum, and about how gravity would impact a pendulum's movement depending on one's proximity to the Earth's...

This essay is a thorough investigation of the various political and philosophical changes which have occurred throughout the environmental movement. Examines the current situation and includes references. Excellent article.

The paths that water can take through Earth's systems are many and complex. Examine the following diagram from NASA depicting the water cycle. Studying the water cycle is important because changes in the water cycle affect all parts of...

Instructional module focusing on the rock cycle. Discussion includes the concept of uniformitarianism and how earth materials change from one form to another. The site also includes an interactive practice quiz and links relating to the...

Trace the advance of the environmental movement from 1948 through the 1980s. Read about the legislation promoting a healthy environment passed under both Democratic and Republican presidents.

Discover background details about the history of the social movement dealing with environmentalism. Lists key environmental legislation from 1963-1980.

Students will observe fault movements on a model of the earth's surface.

This fun activity helps you to understand the movement of the sun by studying shadows.