1. Through tremendous pressure, _____________ rocks can be formed from Basalt, an igneous rock; Shale, a sedimentary rock; or Slate.

2. _______________ rocks are sedimentary rocks that are made from the mineral Calcite which came from the beds of exposed seas and lakes and from sea shells.

3. _______________ are igneous rocks that form when lava cools quickly above ground. The edges of this type of rock are sharp and it is actually glass and not a mixture of minerals.

4. Sedimentary rocks that are made up of sulfate minerals formed as a result of evaporating sea water in massive prehistoric basins are ______________rocks.

5. ____________ is a type of igneous rock that formed by slowly cooling pockets of magma that were trapped beneath the earth's surface.

6. _____________ is a type of sedimentary rock formed from clay that is compacted together by pressure and are used to make bricks and other material that is fired in a kiln.

7. _____________ are igneous rocks which were formed when lava cooled quickly above ground and left air pockets in it. This type of rock is so light that it will actually float in water.

8. _________________rocks are sedimentary rocks made from small grains of the minerals Quartz and Feldspar. They often form in layers and are used as building stones.

9. The metamorphic rock _________ may have been Granite, which is an igneous rock, but was changed by heat and pressure. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure and are arranged in alternating patterns.

10. _________________ rocks are sedimentary rocks made up of large sediments like sand and pebbles cemented together with dissolved minerals.

11. Briefly describe the steps of the rock cycle.

12. Describe how igneous rocks form.

13. Describe how metamorphic rocks form.

14. Describe how sedimentary rocks form.

15. Breifly describe what you consider to be the most important thing you have learned by completing this unit.