LAVA

Before lava reaches the surface, the molten material is called ____.

• rock

• magma

• volcanic ash

• liquid fire

Molten material that leaves a volcano's vent is called ___________.

• gas

• magma

• lava

• liquid fire

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

_________ lava has solidified as rounded masses, characteristic of eruption under water.

• Aa

• Pillow

• Pahoehoe

• Blocky

Tags

NGSS.MS-ESS2-2

If lava enters a body of water or water enters a lava tube, the water may boil violently and cause an explosive shower of molten spatter over a wide area.

• true

• false

Tags

NGSS.MS-ESS2-2

______ forms when lava flows rapidly.

• Aa

• Pahoehoe

• Pillow

• Blocky

Tags

NGSS.MS-ESS2-2

_____ lava is cool, stiff and can not travel far from the erupting vent.

• Aa

• Pahoehoe

• Pillow

• Blocky

Tags

NGSS.MS-ESS2-2

_______ lava moves slowly and has a smooth, billowy or ropey surface.

• Aa

• Pahoehoe

• Pillow

• Blocky

When _______ lava cools down, it forms fragmented, rough sometimes spiny or black surfaces.

• Aa

• Pahoehoe

• Pillow

• Blocky

Tags

NGSS.MS-ESS2-2

__________ is lava that forms a thick, brittle crust as it cools. The crust is torn into sharp pieces as lava moves underneath it.

• Aa

• Pahoehoe

• Pillow

• Blocky

__________ is lava that forms a thin, flexible crust as it cools. The crust wrinkles as the lava moves underneath it.

• Aa

• Pahoehoe

• Pillow

• Blocky

Tags

NGSS.MS-ESS2-2