Volcano Parts
Where is the MAGMA found? (Above ground or Under ground in the ___________ ___________)
Underground in the MAGMA CHAMBER
What 3 placed are volcanoes found? (HINT: 2 are boundaries and one is a random spot)
1. Divergent boundary
2. Convergent Boundary
3. Hot Spot
What are the 2 TYPES of volcanic ACTIVITY
1. Quiet Eruptions
2. Explosive Eruptions
What are the 3 stages of volcanic activity?
1. Active
2. Dormant
3. Extinct
Volcanic Landforms are made of what?
Lava, ash, cinders, other materials
After leaving the magma chamber, the hot magma goes up the ________.
PIPE
What is the RING OF FIRE?
A VOLCANIC BELT located around the PACIFIC PLATE
What does SILICA do to magma?
Silica makes magma more thick
DORMANT
CALDERA
The magma can exit the volcano at either a side or central _________.
VENT
A hot spot is a RANDOM ________ ___________. The STATE that is an example of a Hot Spot is ___________.
Random Magma Chamber (or pocket)
HAWAII is the state that is located on a Hot Spot
A QUIET Eruption is (High or Low) in silica making the magma (thick or thin)?
LOW and THIN!
An ACTIVE volcano is erupting currently or showing signs it may erupt in the future. An extinct volcano is unlikely to ever erupt again.
When an explosive volcano erupts with ASH AND CINDER that BUILDS UP at the top to make a CONE SHAPED VOLCANO, what type of volcano is it?
A CINDER CONE VOLCANO
When the lava pours out the vent and spreads it is known as the l_____ f______.
LAVA FLOW
YELLOWSTONE NATIONAL PARK is located on a ______ ________
hot spot
An EXPLOSIVE eruption is (High or Low) in silica making the magma (thick or thin)?
HIGH and THICK!
What does a Tiltmeter or GPS measure?
changes to earth's surface caused by magma moving
A TALL and CONE SHAPED volcano with ALTERNATING LAYERS of LAVA and ASH is what type of volcano?
COMPOSITE volcano
What is the BOWL SHAPED area at the TOP of a volcano around the CENTRAL VENT called?
CRATER
An Island Arc occurs at what PLAT BOUNDARY? What US State has an ISLAND ARC?
Convergent Boundary
Alaska has an Island Arc- The Aleutian Islands
A pyroclastic flow is a volcanic hazard. What is a Pyroclastic flow made of?
A pyroclastic flow is a fast moving cloud made of HOT gasses, ash, rock and bombs that come out of a volcano during an EXPLOSIVE eruption.
What do gasses escaping from a volcano and earthquakes near a volcano tell geologists about the volcanic activity?
The volcano may ERUPT soon
When thin and runny LAVA floods to create ELEVATED, FLAT SURFACES, the landform is called what?
LAVA PLATEAU