• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/15

Click to flip

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;

15 Cards in this Set

  • Front
  • Back

VOLCANOES

PLACES WEHRE MOLTEN ROCK (MAGMA) RISE TO THE CRUST OF THE EARTH

LAVA

MAGMA ERUPTED ONTO THE SURFACE

VISCOSITY

STICKINESS OF MAGMA


HOTTER=LESS VISCOUS


SILICA CONTENT HAS GREATEST INFLUENCE



cause of volcanoes

plate tectonics, and movement of plates


-mostly in subduction zones


-where one plate goes underneath another one and melts into magma


magma

liquid rock/metled rock


-produced underneath earths surface


-temperature of rock gets above melting point of rock and melts


-

location of volcanoes

convergent boundaries= subduction zones


divergent= rifts


pacific ring of fire

subduction zones

where one tectonic plate moves under another

mid ocean ridges

popular spot for volcanos


-when oceans split under water

hot spots

far away from plate boundary


-

shapes of volcanoes

-CINDER CONES


-SHIELD


-COMPOSITE


-DOME COMPLEXES



CINDER CONES

-TEND TO BE IN THE MIDDLE OF CONTINENTS BECAUSE ITS PYROCLASTIC.


-MORE EXPLOSIVE


-

SHIELD VOLCANOES

MOSTLY MADE OF MAFIC ROCK OR BASALT ROCK.LARGEST MOUNTAINS ON EARTH. ACTIVE.


BASALTIC MAGMA=LOW SILICA HIGH GAS


LAVA FOUNTAINS


HAWAII

COMPOSITE VOLCANOES

STEEP, ALTERNATING LAYERS OF LAVA AND PYROCLASTIC

DOME COMPLEXES

SMALL, OVERLAPPING DOMES, HAPPEN IN VISCOUS LAVA


FELSIC MAGMA= HIGH IN SILICA


SUBDUCTION ZONES


RING OF FIRE

FISSURE VOLCANOE

BASALTIC MAGMA


DIVERGENT PLATE BOUNDARIES


SOFT BASALTIC LAVA SLOPE


MID OCEAN RIDGES LIKE ICELAND