How igneous rocks form

Sign in to read this lesson

Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.

• 8 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. What rocks are made of
2. Rocks of Kenya and how they are dated
3. Minerals that make rocks
4. Classifying rocks by how they form
5. How igneous rocks form
6. Granite and other intrusive rocks
7. Volcanic rocks of the Rift and highlands
8. Igneous texture and cooling rate
9. How sedimentary rocks form
10. Clastic sedimentary rocks
11. Limestone, coral and diatomite
12. Fossils in sedimentary rock
13. How metamorphic rocks form
14. Marble, slate, quartzite and soapstone
15. The rock cycle with Kenyan examples
16. Identifying local rock samples
17. Rocks as resources in Kenya
18. Quarrying, communities and conservation