Volcano

Front 1

jagged chunks of lava formed by rapid cooling on the surface of a lava
flow

Back 1

aa

Front 2

large basin-shaped depression formed when an explosion destroys the
upper part of a volcanic cone or when the magma chamber below a volcano is
emptied during an eruption

Back 2

caldera

Front 3

steep-sloped deposit of solid fragments ejected from a
volcano (

Back 3

cinder-cone

Front 4

also called stratovolcano, steep-sloped volcanic deposit
with alternating layers of hardened lava flows and pyroclastic materials

Back 4

compostie volcano

Front 5

funnel-shaped pit at the top of a volcanic cone

Back 5

crater

Front 6

silica-rich lava

Back 6

felsic-lava

Front 7

crack in a rock surface through which lava flows

Back 7

fissures

Front 8

area of volcanism within a lithospheric plate

Back 8

hot spot

Front 9

liquid rock produced deep inside the Earth

Back 9

magam

Front 10

solidified mafic lava with a wrinkled surface

Back 10

pahoehoe

Front 11

lava that flows out of fissures on the ocean floor and cools rapidly
in rounded shapes

Back 11

pillow lava

Front 12

as a cone of hardened lava that forms a broad base and gentle
slopes

Back 12

shield volcano

Front 13

opening through which molten rock flows onto the Earth’s surface

Back 13

vent

Front 14

the largest possible pyroclastic material that is formed from
solid rock blasted from a volcanic fissure

Back 14

volcanic block

Front 15

any activity that includes the movement of magma toward or onto the
Earth’s surface

Back 15

volcanoism