Mississippi Science E.8.9A.2

Science8th GradeEarth and Space Science

The Standard

E.8.9A: Students will demonstrate an understanding that physical processes and major geological events (e.g., plate movement, volcanic activity, mountain building, weathering, erosion) are powered by the Sun and the Earth's internal heat and have occurred over millions of years.

Explore and debate theories of plate tectonics to form conclusions about past and current movements of rocks at Earth’s surface throughout history.

2026 Mississippi College- and Career-Readiness Standards for Science · Earth’s Systems and Cycles

Teacher's field guide

What Students Need to Do: Students use matching rock layers, seafloor ages, and GPS data to track plate movement. They compare early ideas about moving continents with the explanation that plates carry both land and ocean floor.
What Mastery Looks Like: A student can use matching rock layers to argue that two continents were once joined. They use seafloor ages to explain past movement and GPS arrows to show movement today.
Common Misconceptions: Some students think continents push through a fixed ocean floor. Others think plates move only during earthquakes, or that coastlines matching is enough evidence on its own.
How to Assess It: Show matching rock bands on opposite Atlantic coasts and GPS arrows pointing away from the ocean. Ask, “Were these rocks once joined, and are they moving now? Use both clues.”

Lesson moves

Cut out paper continent shapes, match printed rock belts across their edges, then mark where the rocks may have been millions of years ago.
Give pairs a continent map and a seafloor age map; ask them to debate which evidence best explains matching rock belts across the Atlantic.
Play Evidence Match: teams pair cards showing rock belts, seafloor ages, or GPS arrows with past movement or movement today.
Draw opposite GPS arrows on either side of the San Andreas Fault; ask how a road crossing the fault might shift over decades.

Free download

A ready-to-print activity worksheet aligned to E.8.9A.2, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

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