THE EARTH

2. faults can suddenly slip past each other causing a disturbance on the Earth's surface.
3. The man that proposed the idea that the continents were once connected together.
5. The Yellowstone Park provides this substance and other minerals.
7. This rock is able to absorb water (hint: widely used as stones, tiles and tombstones).
8. Commonly found in Sedimentary Rocks.
10. A rock that is altered by extreme heat and pressure.
11. The gradual movement of the continents across the earth's surface.
13. An example of what water can be erupted as.
15. The extremely hot layer that is made of solid iron.
17. one of the two examples of the Earth's crust. It is the relatively thin part of the earth's crust that underlies the ocean basins.

1. This substance and oil is trapped under the Earth's surface.
2. The process in which new ocean floor is created as molten material from the earth's mantle rises in cracks between plates or ridges and spreads out.
4. An example of a hard Igneous rock that is mostly used as building material.
6. An igneous rock that is glossy and black in colour. Generally used as a cutting tool.
8. Cracks in the Earth's layers.
9. The explosion of dense matter that, according to current theories, marked the origin of the universe.
11. The outer layer of the Earth - it is divided into two parts.
12. A scientific theory that describes the large-scale motions of Earth's lithosphere.
14. The crust and upper mantle of the Earth.
16. An opening, or rupture, on the surface of the Earth, which allows hot magma, volcanic ash and gases to escape from the magma chamber below the surface.