Across
- 5. force - any natural process that builds up Earth's surface. (Volcanoes, Converging plates)
- 6. and erosion - rocks break down and are transported away
- 8. boundary - A plate boundary where two plates move away from each other.
- 9. - (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
- 10. wedging - Process that splits rock when water seeps into cracks, then freezes and expands.
- 11. weathering - the process by which rocks break down as a result of chemical reactions
- 12. - A landform made of sediment that is deposited where a river flows into an ocean or lake
- 15. of slow changes on Earth - glaciers; plate tectonics; weathering/erosion; river creating a canyon
- 17. Building - Major geological event that occurs when continental plates of equal density converge, resulting in mountain chains. Other forces that can create mountains include earthquakes and volcanoes.
- 18. - A supercontinent containing all of Earth's land that existed about 225 million years ago.
- 19. wedging - In this type of physical weathering, the roots of a plant (typically a tree) wedge into a crack in a rock and, as the plant growns, splits the rock.
- 20. - Processes by which rock, sand, and soil are carried away (i.e. weathering, glaciation)
- 21. boundary - A plate boundary where two plates move past each other in opposite directions
- 23. - The breaking down of rocks and other materials on the Earth's surface.
- 25. - A device that records ground movements caused by seismic waves (seismic activity) as they move through Earth (measures earthquakes) It can warn scientists that a volcano is about to erupt.
- 26. of fast changes on Earth - landslides; earthquakes; volcanoes; crazy weather; avalanches
Down
- 1. - deep valleys with steep sides usually created by rivers
- 2. forces - Forces that wear away or break down land masses on the earth's surface (weathering and erosion)
- 3. erosion - The removal (erosion) of beach materials (sand/ dunes/ vegetation) into the ocean, sea, or lakes by the action of waves, tides, or wind
- 4. weather technology - tracks storms such as hurricanes to warn people ahead of dangerous storms.
- 5. boundary - A plate boundary where two plates move toward each other.
- 7. Arch - Landform caused by weathering and erosion
- 8. - Process in which sediment is laid down in new locations.
- 13. drift - The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
- 14. ridge - earthquake and volcano zone along divergent plate boundaries that exist in the middle of the Atlantic Ocean. New crust is being formed here.
- 16. caverns - underground caves created by chemical weathering
- 22. barrier - A barrier forming a temporary dam that may be created to protect a flood-prone area. It reduces damage from floods.
- 23. erosion - when the wind picks up dirt and dust and moves it from one place to another
- 24. - a low area between mountains or hills where streams and rivers often flow/ sometimes created by glaciers
- 25. - large craters that form when the roof of an underground cavern collapses after soil is eroded by water