Across
- 3. a tubelike structure that allows lava to reach the surface
- 4. a substance's internal resistance to flow
- 5. the processes associated with the eruption of magma, hot water, and steam
- 8. opening in Earth's crust through which lava erupts and flows out onto the surface
- 9. _______________ is the process in which one tectonic plate slips beneath another tectonic plate
- 10. swift moving, potentially deadly clouds of gas, ash, and other volcanic material produced by a violent eruption
- 14. large crater that can form when the summit of a volcano collapses into the magma chamber during or after an eruption
- 15. the process that occurs when the weight of an elevated ridge pushes an oceanic plate towards a subduction zone
- 16. long crack in Earth's crust
- 17. process that occurs as the weight of the subducting plate pulls the trailing lithosphere into a subduction zone
Down
- 1. _________________ boundaries are boundaries where two tectonic plates slide horizontally past each other
- 2. an unusually hot area in Earth's mantle where high temperature plumes of mantle material rise toward the surface
- 3. steep-sided, generally smaller that is built by the accumulation of tephra found around the vent
- 6. _____________ boundaries place where two tectonic plates are moving toward each other
- 7. _______ volcanoes are generally cone-shaped with concave slops which are built by violent eruptions of volcanic fragmets and lava
- 11. _________ volcanoes are big volcanoes with gently sloping sides built by non-explosive eruptions of basaltic lava that accumulates in layers
- 12. huge amounts of lava that reupt from fissures
- 13. rock fragments that are calssified by size thrown into the air during a volcanic eruption and fall to the ground