Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
the mountain-shaped structure
|
CONE
|
|
|
a small pit or depression at the top of the cone
|
CRATER
|
|
|
a channel through which lava flows from the magma chamber to the surface
|
VENT
|
|
|
a channel that branches off the vent
|
SECONDARY VENT
|
|
|
source of magma below a volcano
|
MAGMA CHAMBER
|
|
|
a crack in the Earth's surface through which magma rises
|
FISSURE
|
|
|
molten rock below the surface
|
MAGMA
|
|
|
molten rock at the surface
|
LAVA
|
|
|
rocks formed from molten rock
|
IGNEOUS
|
|
|
rocks formed from cooled magma
|
INTRUSIVE IGNEOUS
|
|
|
rocks formed from cooled lava
|
EXTRUSIVE IGNEOUS
|
|
|
examples of extrusive igneous rocks
|
PUMICE, OBSIDIAN, BASALT
|
|
|
examples of intrusive igneous rocks
|
GRANITE, GABBRO
|
|
|
magma high in silica and gases
|
RHYOLITIC
|
|
|
magma low in silica and gases
|
BASALTIC
|
|
|
magma with medium levels of silica and gas
|
ANDESITIC
|
|
|
a large mass of intrusive igneous rocks
|
PLUTON
|
|
|
the largest pluton
|
BATHOLITH
|
|
|
a very large pluton, slightly smaller than a batholith
|
STOCK
|
|
|
a mushroom-shaped pluton
|
LACCOLITH
|
|
|
a ribbon-like pluton forming horizontally
|
SILL
|
|
|
a ribbon-like pluton forming vertically
|
DIKE
|
|
|
any material ejected from a volcano
|
TEPHRA
|
|
|
hot, fast moving ejected material
|
PYROCLASTIC FLOW
|
|
|
a volcanic mudflow
|
LAHAR
|
|
|
smallest tephra
|
DUST
|
|
|
tephra the size of grains of sand
|
ASH
|
|
|
largest tephra
|
VOLCANIC BLOCK
|
|
|
lava cools and hardens in the air
|
LAVA BOMB
|
