Internet Resources

Primer on Gravity and Magnetics

This web page explains the goals and benefits of studying gravity and magnetic data to understand subsurface geology of the Earth. It discusses uses of gravity and magnetic measurements in providing ...

Earth's Interior

This web-based laboratory material explores the ways in which heat controls mantle dynamics, how seismic waves move through the mantle and may be used to investigate its properties, and how the ...

The Interior of the Earth

This United States Geological Survey (USGS) publication discusses the interior of the Earth, including the mantle and the core. The use of earthquake waves to determine the interior structure of the ...

Earth's Interior

This website contains class notes from a Geology 101 (physical geology) course. It discusses the composition and structure of the Earth's interior. Each layer, the inner core, outer core, mantle, and ...

Layers of the Earth

This is an introductory lesson that can be expanded into the areas of geology, volcanos, earthquakes, and archaeology. Students will be introduced to geology in its simplest form and learn how a rock ...

Layers of the Earth (title provided or enhanced by cataloger)

This Classroom Connectors lesson plan teaches students to identify the layers of the Earth, including the crust, mantle and core. The site provides goals, objectives, an outline, time required, ...

Demonstrations of Geophysical Principles Applicable to the Properties and Processes of the Earth's Interior

These demonstrations are designed to help students develop a conceptual understanding of geophysical principles. The concepts covered in these demonstrations include rheology, seismic waves, ...

Earth Composition (title provided or enhanced by cataloger)

This Classroom Connectors lesson plan teaches students about the structure and composition of the Earth by describing and constructing a model of the Earth's layers. This site provides goals, ...

When North Goes South

This is a report of a computer numerical model of the electromagnetic, fluid dynamical processes of Earth's interior that reproduced key features of the magnetic field over more than 40,000 years of ...

Origin of The Earths Magnetism

This site holds information on the Dynamo Theory, the suspected cause of Earth's magnetic field. The Earth's magnetism seems to come from fluid motions in the Earth's core, from circulating flows ...

Hot Spots and Mantle Plumes

This site describes mantle plumes, which are areas of hot, upwelling mantle. A hot spot develops above the plume. Magma generated by the hot spot rises through the rigid plates on the lithosphere and ...

Structure of the Earth

This site explains that seismologic studies of the Earth have revealed that it has several distinct layers. Each of these layers has its own properties and this information has helped to give ...

The Earth's Layers

This site contains information about the crust, lithosphere, mantle, convection currents, outer core and inner core of the Earth. The composition and thickness of each of the layers are described ...

Arthur Holmes: Harnessing the Mechanics of Mantle Convection to the Theory of Continental Drift

This online article, from Earth: Inside and Out, takes a look at the life and scientific contributions of Arthur Holmes. It discusses the phenomenon of radioactivity, which was discovered while ...

A Peek Inside Our Planet

By placing the cursor on a part of this interactive model of the Earth, students can get information about that part. This includes the inner and outer core, the mantle, crust, and atmosphere. There ...

Inge Lehmann: Discoverer of the Earth's Inner Core

Danish seismologist Inge Lehmann used seismic signals to study the thousands of earthquakes that occur every year and offer a brief glimpse of what is happening deep inside the Earth. This article ...

The Shadow Zone

This is a demonstration of the Core Shadow Zone of the Earth. Using a clear or translucent half-sphere held in front of a light source, the refracting properties of the core and how it generates the ...

Farallon Plate remnants

The Rockies are fifteen hundred kilometers, or one thousand miles, to the east. The cause must be the tectonic plate that built these mountains. Its name is Farallon. Farallon started off normally ...

Earth Structure: A virtual journey to the center of the earth

This lesson discusses the interior structure of the earth as defined by research on the behavior of seismic waves as they move through the layers inside of the planet. The lesson details both ...

The Core Dynamo

This demonstration of the Earth's magnetic field requires a DC motor, ammeter, electromagnet, and DC power supply or battery. The site explains the concept of a dynamo and how if an electrical ...