Rocks and weathering revision

Today we will be starting to revise for the tes on rocks and weathering next week. Answer the following in your books:

1. What does limestone look like?
2. Using the link above, what sort of rock is it? (metamorphic, sedimentary or igneous?)
3. Explain one problem associated with building things out of limestone:
4. What will this lava form when it cools down?
5. What influences the size of crystals in a rock formed this way?
6. What is metamorphic rock?
7. Watch this animation ( http://www.bbc.co.uk/bitesize/ks3/science/environment_earth_universe/rock_cycle/activity/ ), and explain what you can often find buried in sedimentary rock:
8. Try this quiz, which is fairly similar to the questions you'll have on the test next week:
9. Use the rock cycle to explain how a sedimentary rock could become a metamprohic rock:
10. How would you describe weathering and erosion? Give two ways a rock can be eroded:
11. Try this quiz (it's pretty hard so don't worry if you get some wrong!).
12. Last of all, try and find out what coccolithophores are and what part or Britain they helped create.  There's an achievement point for anyone wo can do this!