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6. Which type of rock never contains fossils?
- igneous
- sedimentary
- metamorphic
7. What happens to pieces of rock as they are transported by a river?
- They get smaller and more rounded.
- They get smaller and more jagged.
- They get larger and more jagged.
8. Which statement about metamorphic rocks is correct?
- They are formed from all types of rock.
- They are formed when rocks are heated until they melt.
- They are only formed from heated sedimentary rocks.
9. Which of these is not an example of physical weathering?
- Acid rain falling on limestone
- Freeze-thaw
- Wind blowing sand onto a rock
10. which type of rock is hardest?
- Sedimentary
- Igneous
- Metamorphic
11. Over what sort of time period do sedimentay rocks form?
- Over millions of years
- Over thousands of years
- centuries