Show:
HOT STUFF
ANATOMY OF A VOLCANO
MORE VOLCANO STUFF
STILL MORE STUFF ABOUT VOLCANOES
CONTINUING VOLCANOES
100
_____ IS A MOLTEN MIXTURE OF ROCK-FORMING SUBSTANCES, GASES, AND WATER FROM THE MANTLE.
What is MAGMA?
100
BENEATH A VOLCANO, MAGMA COLLECTS IN A POCKET CALLED A _____ _____.
What is MAGMA CHAMBER?
100
A _____ _____ IS AN AREA WHERE MATERIAL FROM DEEP WITHIN THE MANTLE RISES AND THEN MELTS THE SURROUNDING ROCK, FORMING MAGMA.
What is a HOT SPOT?
100
GEOLOGISTS OFTEN USE THE TERMS _____, _____, OR _____ TO DESCRIBE A VOLCANO'S STAGE OF ACTIVITY.
What are ACTIVE, DORMANT, or EXTINCT?
100

______ IS THE RESISTANCE OF A LIQUID TO FLOWING

What is VISCOSITY?

200
WHEN MAGMA REACHES THE SURFACE, IT IS CALLED _____.
What is LAVA?
200
THE MAGMA MOVES UPWARD THROUGH A _____, A LONG TUBE IN THE GROUND THAT CONNECTS THE MAGMA CHAMBER TO EARTH'S SURFACE.
What is PIPE?
200
MAGMA SOMETIMES BREAKS THROUGH THE OCEAN FLOOR, CREATING VOLCANOES. THESE VOLCANOES SOMETIMES CREATE A STRING OF ISLANDS CALLED AN _____ _____.
What is an ISLAND ARC?
200
AT SOME PLACES ON EARTH'S SURFACE, THIN LAYERS OF LAVA POUR OUT OF A VENT AND HARDEN ON TOP OF PREVIOUS LAYERS. SUCH LAVA FLOWS GRADUALLY BUILD A WIDE, GENTLY SLOPING MOUNTAIN CALLLED A _____ _____.
What is SHIELD VOLCANO?
200

_____ HELPS TO DETERMINE THE VISCOSITY OF MAGMA

What is SILICA?

300
A _____ IS A WEAK SPOT IN THE CRUST WHERE MOLTEN MATERIAL (MAGMA) COMES TO THE SURFACE.
What is a VOLCANO?
300
MOLTEN ROCK AND GAS LEAVE THE VOLCANO THROUGH AN OPENING CALLED A _____.
What is VENT?
300

AS THE SILICA CONTENT OF MAGMA INCREASES, ITS VISCOSITY __________.

What is INCREASES?

300
IF A VOLCANO'S LAVA IS VERY THICK (HIGH VISCOSITY), IT MAY PRODUCE ASH, CINDERS, AND BOMBS. THESE MATERIALS BUILD UP AROUND A VENT IN A STEEP, CONE-SHAPED HILL OR SMALL MOUNTAIN CALLED A _____ _____.
What is CINDER CONE?
300
A _____ IS A MASS OF ROCK FORMED WHEN A LARGE BODY OF MAGMA COOLS INSIDE THE CRUST.

What is A BATHOLITH?

400
ONE MAJOR VOLCANIC BELT IS THE _____ _____ _____, FORMED BY THE MANY VOLCANOES THAT RIM THE PACIFIC OCEAN.
What is RING OF FIRE?
400
A _____ _____ IS THE AREA COVERED BY LAVA AS IT POURS OUT OF A VENT.
What is LAVA FLOW?
400
GEOLOGISTS CLASSIFY VOLCANIC ERUPTIONS AS _____ OR _____.
What is QUIET or EXPLOSIVE?
400
SOMETIMES, LAVA FLOWS ALTERNATE WITH EXPLOSIVE ERUPTIONS OF ASH, CINDER, AND BOMBS. THE RESULT IS A _____ _____, WHICH IS A TALL, CONE-SHAPED MOUNTAIN.
What is COMPOSITE VOLCANO?
400
WHAT ARE THE TWO TYPES OF GEOTHERMAL ACTIVITY FOUND IN AREAS OF VOLCANIC ACTIVITY?

What are GEYSERS AND HOT SPRINGS?

500
VOLCANIC BELTS FORM ALONG THE BOUNDARIES OF EARTH'S _____.
What are PLATES?
500
A _____ IS A BOWL-SHAPED AREA THAT MAY FORM AT THE TOP OF A VOLCANO AROUND THE CENTRAL VENT.
What is a CRATER?
500

___________ LAVA HAS A HIGH SILICA CONTENT AND IS COOL AND SLOW-MOVING.

What is PAHOEHOE?

500
THE HUGE HOLE LEFT BY THE COLLAPSE OF A VOLCANIC MOUNTAIN IS CALLED A _____.
What is CALDERA?
500

WHAT ARE THE 5 STEPS OF VOLCANO FORMATION?

1. LAVA BEGINS AS MAGMA

2. LIQUID MAGMA IS LESS DENSE THAN SOLID MATERIAL AROUND IT

3. MAGMA FLOWS UP INTO CRACKS.

4. MAGMA GETS TRAPPED BENEATH THE SURFACE

5. MAGMA MAKES IT TO SURFACE= VOLCANO