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# Geomagnetism I: Polar Wander

This is an activity about the movement, or "wandering," of our Earth's magnetic poles. The learner will explore this concept by measuring and calculating the distance the Earth's north magnetic pole has moved over the past 400 years and calculating... (View More)

Audience: Middle school, High school
Materials Cost: Free

# Geomagnetism II: Magnetic Reversals

This is an activity about the periodic reversals of Earth's magnetic field. Learners will graph the frequency of magnetic pole reversals over the past 800,000 years and investigate answers to questions using the graphed data. This is Activity 8 in... (View More)

# The Declining Magnetic Field

This is an activity about the declining strength of Earth's magnetic field. Learners will review a graph of magnetic field intensity and calculate the amount by which the field has changed its intensity in the last century, the rate of change of its... (View More)

Audience: Middle school, High school
Materials Cost: Free

# Electromagnetic Math

This book offers an introduction to the electromagnetic spectrum using examples of data from a variety of NASA missions and satellite technologies. The 84 problem sets included allow students to explore the concepts of waves, wavelength, frequency,... (View More)

Audience: Middle school, High school
Materials Cost: Free

# Investigating the Ring Current

Students use a dipole magnet and compass to model and map Earth's magnetic field. They then induce a magnetic field to represent a Ring Current in order to observe the response to a fluctuating electric current caused by a solar storm. The lesson... (View More)

Audience: High school
Materials Cost: \$10 - \$20 per group of students

# Design Challenge: Shielding a Magnetometer

Students will test various materials to determine if any can shield their "magnetometer" (compass) from an external magnetic field using their own experimental design. If no suitable material is available, they will devise another method to protect... (View More)

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