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Intrusive vs. Extrusive Igneous Rocks Quiz

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1. What is the primary difference between intrusive and extrusive igneous rocks?

2. What is the cooling rate of intrusive igneous rocks, and how does it affect their texture?

3. Which of the following is an example of an intrusive igneous rock?

4. What is the texture of extrusive igneous rocks?

5. Which of the following is an extrusive igneous rock?

6. How is the mineral composition of intrusive igneous rocks when compared to extrusive igneous rocks?

7. Why are vesicles often found in extrusive igneous rock?

8. Under which of the following conditions would an intrusive igneous rock most likely form?

9. What process primarily drives the formation of extrusive igneous rocks?

10. How does the texture of a rock influence the classification of it as an intrusive or extrusive igneous rock?