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Classify rock layers
Free printable Grade 8 science worksheet for "Classify rock layers" — practice geologic time. No-prep, print or assign online.
Middle school students classify rock layers by type and relative age in this Earth and Space Science worksheet on Geologic Time, using the principle of superposition and other key concepts to interpret stratigraphic sequences. Teachers can use it to make geologic time tangible by showing how rock layers record Earth's history. It fits naturally into a unit on geologic time and supports the broader skill of reading and interpreting geological evidence.
Learning objectives
- Classify rock layers by type — sedimentary, igneous, or metamorphic
- Use the principle of superposition to determine the relative age of rock layers
- Interpret a rock layer diagram to describe the sequence of geological events
Answer Key
How to use this worksheet
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- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
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