Dynamic Planet
Investigation 3:
Forces that Cause Earth Movements

This investigation will help you to:

Convection Lesson,
NASA
The purpose of this lesson is to produce a visual convection current in the classroom and compare it to the images taken of convection cells in the Sun.

Plate Tectonic Theory,
James Madison University
This page shows a cross section of the lithosphere and describes the movement of the earth's crust.

Earth's Lithosphere,
National Air and Space Museum
See the lithosphere in context in terms of the shape of the Earth, plate movement, and drifting continents.

Mid-Ocean Ridges,
UC Santa Barbara
It is the longest mountain chain, the most active voslcanic area and until recently, the least accessible region on the earth. New maps reveal striking details of how segments of the ridge form and evolve.

MAR: Descent to the Mid-Atlantic Ridge,
Scripps Institute of Oceanography
Follow the exhibition by a Scripps researcher and an entire scientific team, as they guided the deep submersible Alvin to probe the depths of the North Atlantic - exploring undersea mountains of the Mid-Atlantic Ridge.

Developing the Theory,
USGS
Learn about the the development of the theory of mid-ocean ridges.