volcanoes and Mountains

Question 1

Batholith

Answer 1

a large intrusive igneous rock formed when magma cools under ground.

Question 2

Caldera

Answer 2

After a volcano erupts, the top collapses into a partially emptied magma chamber.

Question 3

Cinder cone

Answer 3

Throws lava into the air where it hardens.

Question 4

Composite volcano

Answer 4

has altering layers of lava and tephra-blows quietly or loud.

Question 5

Dike

Answer 5

squeezed into a vertical crack which then hardens.

Question 6

hot spot

Answer 6

areas in Earth’s mantle is hotter than neighboring areas =forming melted rock that rises toward the crust.

Question 7

Laccolith

Answer 7

Dome of rock formed from a sill that continued to push rock layers.

Question 8

Pacific Ring of Fire

Answer 8

area around the Pacific Plate where volcanoes and earthquakes are common.

Question 9

Shield volcano

Answer 9

flows quietly, has basaltic lava.

Question 10

Sill

Answer 10

Magma squeezed into a horizontal crack then hardens.

Question 11

tephra

Answer 11

different sized volcanic material, varies size from ash to bombs.

Question 12

Volcanic neck

Answer 12

Magma that hardens inside a vent, outer rock eroded away exposing a solid igneous rock core.

Question 13

Volcano

Answer 13

Is an opening in Earth’s surface that forms Mountains when layer of lava and volcanic ash erupts.

Question 14

Seduction zone

Answer 14

1 plate slides under another, where the plates move together.

Question 15

Divergent boundary

Answer 15

area where Earth’s plate boundaries are moving apart.

Question 16

Folded mountain

Answer 16

Created when rock layers are squeezed from opposite sides, causing them to to buckle and fold.

Question 17

Rift

Answer 17

Where plates separate they form long deep cracks.

Question 18

Upwarped Mt.

Answer 18

formed when earth’s crust is pushed up and eroded forming sharp peaks and ridges.

Question 19

Vent

Answer 19

An opening in Earth’s surface which lava, ash, cinders,smoke, steam can go through.

Question 20

Crater

Answer 20

The steep walled depression at the top of a volcanic vent.