Across
- 1. The thin, outermost layer of the Earth, composed of solid rock, where we live, and divided into continental and oceanic types.
- 3. The process where one tectonic plate moves under another and sinks into the mantle.
- 4. A super-continent containing all of Earth's land that existed about 225 million years ago.
- 5. This is the layer of the Earth that is broken into sections...we call these sections plates.
- 6. Underwater geysers found along mid-ocean ridges that release heated water rich in minerals.
- 9. The thick layer of semi-solid rock between the crust and the outer core, which flows slowly and is involved in tectonic activity.
- 11. This is one of the pieces of evidence that proves plate tectonics by describing the movement of magma within the asthenosphere.
- 13. An underwater mountain range formed by plate tectonics, where new oceanic crust is created as tectonic plates pull apart.
Down
- 1. A tectonic plate boundary where two tectonic plates move toward each other, creating mountain ranges and volcanoes.
- 2. A geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other.
- 7. A tectonic plate boundary where two tectonic plates slide past each other horizontally, characterized by significant seismic activity (earthquakes) due to friction between the plates.
- 8. This is the theory explaining the structure of the earth's crust and many associated phenomena that result in the interaction of rigid lithospheric plates that move slowly over the asthenosphere.
- 10. A tectonic plate boundary where two plates move away from each other, often associated with mid-ocean ridges.
- 12. This is one of the pieces of evidence that proves plate tectonics by describing the movement of continents over time.