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In this activity, learners make a 3-D model of magnetic fields by inserting a small, strong magnet into a sphere. When learners sprinkle used staples onto the sphere, they'll see how the field works, as the orientation of the staples will change with "latitude." Adult supervision recommended. This resource also includes information about Iceland's unusual volcanoes, which have magnetic fields that seem to defy the Earth.
- Under 5 minutes
- 5 to 10 minutes
- $1 - $5 per student
- Ages 8 - 14
- Activity, Model
- English
Quick Guide
Materials List (per student)
- squish ball, a soft toy ball with an earth printed on it
- a Neodymium magnet - you can make a 1 cm x 1 cm cylinder from two standard-sized 1 cm x 1/2 cm discs; only neodymium magnets are strong enough for this.
- hot melt glue or silicone seal
- utility knife or scissors
- compass
- preassembled earth globe (optional)
- used staples
Subjects
-
Earth and Space Science
-
Earth Processes
- Volcanoes and Plate Tectonics
- Earth Structure
-
Earth Processes
-
Physical Sciences
-
Electricity and Magnetism
- Electromagnetic Fields
-
Electricity and Magnetism
-
The Nature of Science
-
The Scientific Process
- Conducting Investigations
-
The Scientific Process
Informal Categories
- Model Building
- Nature and Environment
Audience
To use this activity, learners need to:
- see
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
This resource is part of:
Access Rights:
- Free access
By:
- Doherty, Paul
Rights:
- All rights reserved, Exploratorium, 2001