How do you locate an earthquake epicenter?

Each station's lag between P waves and S waves gives its distance from the quake. Draw a circle of that distance around each of three stations, and the epicenter is where the circles cross. Locate an Epicenter From Three Stations uses a lag graph, a compass and a scale bar.

How do geologists tell which rock layer is oldest?

By superposition, in layers that have not been overturned the bottom layer formed first. By cross cutting, a fault or dike is younger than every rock it cuts. Order Rock Events Using Cross Cutting and the Grand Canyon sheet put these rules to work.

8th Grade Earth Science Worksheets

Ages 13-14 · 2 sub-topics · Free previews · Print-ready PDFs

Earth science studies the solid Earth: its layers, moving plates, rocks and the processes that shape its surface over time. There are 11 worksheets for 8th grade, each with an answer key, on plate tectonics and on rock layers and geologic time. Hawaiian Island Ages and Plate Speed, Locate an Epicenter From Three Stations and Label the Rock Layers of the Grand Canyon are three of the sheets. Native sheets here practice MS-ESS1-4, MS-ESS2-2 and MS-ESS2-3.

Written by Adi Ackerman, Head Teacher

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Grade: 8th Grade

Subject: Science

Topic: Earth Science

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Grade8th Grade

TopicEarth Science

Sort Earth Processes by Time and Size

Grade8th Grade

TopicEarth Science

Frequently Asked Questions

They date volcanoes in a hot spot chain and graph age against distance from the active volcano. On Hawaiian Island Ages and Plate Speed, students draw a best fit line and divide distance by time. A rule box converts the result from km per million years to cm per year.

More worksheets

Explore all of our 8th grade worksheets, covering matter, waves and light, living things, energy, and more.

Matter Waves and Light Living Things Energy Forces and Motion Earth Systems Ecosystems Earth and Space Engineering and Design Scientific Method

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