Rock Investigation

Discuss the different types of rock (igneous, metamorphic, sedimentary) and the clues students can use to identify an unknown rock (texture, size, lustre, scratch test, etc.). Students are given a rock to observe and answer questions on the activity sheet. After answering the questions students guess which type of rock they have. Wrap up: Confirm which rock each student has, and walk them through the investigation if necessary.

*This activity will require vinegar and rock samples.

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