STANDARD: 3200 - 02 Students will compare and contrast the structure of Earth's crust and interior.
Objective: 3200-0202Analyze current and past ideas about the structure of Earth.
Analyze evidence showing the presence of Earth's magnetic field and how it has changed over time.
Intended Learning Outcomes:
Use Basic Science Process Skills: Make observations and measurements
Introduction: Review how to use a compass. Review why the compass works. Review the need to keep the compass away from the magnets during use in the lab today
Materials: for each group of at least three students
Procedure: Animation of the process
' Be sure to wear goggles while using the iron filings and follow all teacher directions.
Application: How does this relate to the lines of magnetic reversal preserved in the rocks of the ocean floor and the rocks on land?
Enrichment : Use the same sheet of paper with the north and south orientations written on it to make the paper model of sea floor spreading.
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Updated July 25, 2000 by: Glen Westbroek
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