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Across 2. place on the surface of the earth directly above the column of magma called a mantle plume 4. circular depression forming when a magma chamber empties and causes the ground above to sink 7. small, steeply sloped volcano that forms from moderately explosive volcanic eruptions 9. forms when lava erupts underwater 10. volcanos that are erupting at this time are called 11. large, gently sloped volcano that forms from moderately explosive eruptions 15. 2 things that magma is made out of 16. deep crack that forms between tectonic plates as they seperate 17. lava that flows slowly forming a glassy surface with rounded wrinkles 18. lava that is jagged 20. a mountain that forms when molten rock is forced to the earth's surface 21. when lava erupts from long cracks 22. an instrument attached to the surface of the volcano which detects changes in angle of slope

Down 1. lava that oozes from a volcano 3. consists of rock fragments created by explosive eruptions 5. most volcanic activity takes place along these 6. pebble like bits of magma that became solid before they hit the ground 7. volcano made from alternating layers of lava and pyroclastic material 8. magma that flows onto the earth's surface 12. molten rock that stays in the earth's crust 13. volcanoes that surround the pacific ocean 14. earthquakes are measured with this 19. funnel shaped pit around the central vent of a volcano