By Shannon Ford
15 questions
3rd - 3rd Grade
Science
2.3K plays
Updated Jun 2026
This Grade 3 science worksheet helps students identify and classify the three main types of rocks: igneous, sedimentary, and metamorphic. Across 15 multiple-choice questions, students connect each type to how it forms, recognize that sedimentary rocks may contain fossils, identify minerals as a component of rocks, and classify rocks by observable features such as color. They also apply their understanding to examples including granite, marble, sandstone, obsidian, limestone, slate, and pumice. The questions reinforce essential Earth science vocabulary and help students distinguish rock types by formation process and representative examples. Use this resource for direct instruction review, independent practice, science-center work, or a quick formative check after teaching rocks. It is designed for Grade 3 learners and is available as a free printable worksheet with a complete answer key, making it practical for classroom instruction, homework, or review.
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WorksheetsAnswer KeyThis Grade 3 worksheet uses 15 multiple-choice questions to assess how students identify igneous, sedimentary, and metamorphic rocks by their formation processes and examples. Students also apply the classification skill to rocks such as granite, marble, sandstone, obsidian, limestone, slate, and pumice.
Introduce the three rock types with a simple chart showing how each forms, then have students explain why a sample belongs in one category before completing the multiple-choice questions. Use items about granite, marble, sandstone, obsidian, limestone, and slate to prompt discussion about how formation clues connect to classification.
Students may confuse a rock’s name with its type, such as selecting sedimentary for limestone but forgetting that granite and obsidian are igneous or that marble and slate are metamorphic. Watch also for confusion between the formation clues—magma cooling, layers of sediments being pressed together, and changes caused by heat or pressure—and for choosing a rock feature without applying the worksheet’s classification task.
You can assign the 15-question worksheet as a printable PDF or as a digital quiz on Wayground. It includes a complete answer key for checking student responses, and printable submissions can be graded by scanning student work with the Wayground for Teachers app. The printable format also supports classrooms that are reducing screen time.
In the worksheet’s Advanced Settings, adjust font spacing or choose a larger font size to make the 15 multiple-choice questions and rock vocabulary easier to read. You can also enable a dyslexia-friendly font or translate the worksheet into another language to support access to terms such as igneous, sedimentary, and metamorphic.
Wayground offers a comprehensive collection of free printable worksheets and practice problems across all subjects, with downloadable PDFs and answer keys to help students master essential skills and concepts. Browse more resources at https://wayground.com/en-us/worksheets.