6-1

Question 1

magma

Answer 1

molten rock

Question 2

lava

Answer 2

magma that flows onto the Earth’s surface

Question 3

ash

Answer 3

molten rock blown into tiny particles that harden in the air, the size of dust

Question 4

volcano

Answer 4

a vent or fissure in the Earth’s surface which magma and gases are expelled

Question 5

magma chamber

Answer 5

the body of molten rock that feeds a volcano

Question 6

vents

Answer 6

an opening at the surface of the Earth through which volcanic material passes

Question 7

pumice

Answer 7

lava with gas, that when it reaches the surface it forms a solid

Question 8

pyroclastic material

Answer 8

forms when magma is blasted into the and then hardens

Question 9

aa lava

Answer 9

lava that pours out quickly and forms a brittle crust, the crust is torn into jagged pieces as molten lava to flow underneath.

Question 10

pahoehoe lava

Answer 10

slowly like wax that has a glassy surface that has rounded wrinkles

Question 11

blocky lava

Answer 11

cool stiff lava that doesn’t travel far, it forms jumbled heaps of sharp edged chuncks

Question 12

pillow lava

Answer 12

lava that forms underwater, that form rounded lumps that look like lava

Question 13

viscosity

Answer 13

how lava flows