*A weak spot in the Earth's crust where molten material comes to the surface
Why is Volcanic activity considered constructive?
*Volcanic activity is a constructive force that adds to existing land and forms new islands
Where are volcanos usaully located and why?
*Volcanic belts form along the boundaries of Earths crust. In these areas the lithosphere is fractured which allowes magma to reach the surface
What is name of the major volcano belt?
*The Ring of Fire
*When volcanos form a string of islands
*Some volcanos lie in the maiddle of a contidental or oceanic plates far from plate boundaries
*An explosive eruption with no lava just ash gases and rock
*A huge hole left when a volcano collapsed into its magma chamber
The parts of a volcano #1
*MAGMA CHAMBER- The pocket of magma beneath the surface
PIPE- The magma moves through a long tube through the ground
VENT(at the top of the pipe)- Molten rock and gas leave the volcano through an opening (the vent)
The parts of a volcano #2
*CRATER- The bowl shaped area that may form at the top of the volcano
LAVA FLOW- The area covered by lava as pours out of the vent
What is the difference between a quiet and explosive eruption?
*QUIET ERUPTION- A volcano erupts quietly if its magma flows easily (thin lava)
EXPLOSIVE ERUPTION- A volcano erupts explosively if the magma is thick and sticky. The explosion beaks the lava into three different sizes (small pieces, cinders & bombs)
Know the stages of a volcano
*Active- Erupting of showing signs of eruption
Dormant- Sleeping but may erupt in the future
Extinct- Unlikely to ever erupt again
Know the types of volcanic eruption
*Hot Springs- Natures hot tub
Geysers- Fountain of hot water and steam that erupts from the ground
Geothermal Energy- The use of hot water that is heated naturally by the magma close to the surface
Where are Mt. Kilimanjaro and Mt. Fuji located?
*Mt. Fuji is located in Japan
Mt. Kilimanjaro is located in East Africa
Know the different kinds of landforms created by lava and ash
*Shield Volcano- Wide base formed from quiet eruptions
Cinder Cone Volcano- Steep and formed from explosive eruptions
Composite Volcano- Formed from quiet and explosive eruptions
Lava pleateau- High level area around a volcano
Calderas- A huge hole left when a volcano collapsed into a magma chamber
The different types of landforms created by magma
*Dikes and Sills