Across
- 4. rock formed at or near Earth's surface by the accumulation and lithification of sediment.
- 7. relating to or involving volcanic processes.
- 9. drift: Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed.
- 10. matter that settles to the bottom of a liquid; dregs.
Down
- 1. coming closer together, especially in characteristics or ideas.
- 2. denoting or relating to rock that has undergone transformation by heat, pressure, or other natural agencies, e.g. in the folding of strata or the nearby intrusion of igneous rocks.
- 3. tending to be different or develop in different directions.
- 5. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
- 6. make a thorough or dramatic change in the form, appearance, or character of.
- 8. tectonics: a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.