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Formation of Igneous Rocks Quiz

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1. Igneous rocks are primarily formed by which process?

2. What type of igneous rock forms on the Earth's surface?

3. What mineral is most commonly found in granite, an intrusive igneous rock?

4. Which of the following is NOT a factor that influences the formation of igneous rocks?

5. Intrusive igneous rocks are characterized by what type of grain size?

6. What is the difference between magma and lava?

7. Which type of igneous rock has a glassy texture due to rapid cooling?

8. What is pegmatite?

9. What physical property is used to classify igneous rocks?

10. What is the name of fine-grained, dark-coloured, extrusive igneous rock?