Volcanoes
Notes:
Volcanoes Section 1
Volcanoes and Plate Tectonics
Volcanic belts form along the boundaries of earth’s plates. One major volcanic belt is the Ring of Fire.
At these plate boundaries, large pieces of crust diverge (pull apart) or converge (push together).
Diverging Boundaries ( pull apart)
Diverging plate boundaries occur along mid-ocean ridges (ocean to ocean plates) or rift valleys (continental to continental plates)
When lava pours out of the cracks of these valleys new mountains are built. Volcanoes are formed along these rift valleys.
Convergent Boundaries ( push against each other)
Converging plate boundaries have plates that submerge or sub-ducting plates they create trenches. When a oceanic and oceanic plate submerge a trench is formed, when a continental and continental plate submerge mountains are formed, when a oceanic and continental plate submerge a trench is formed.
Volcanoes form when oceanic and oceanic plates collide. They will form a string of islands called the island arc. An oceanic and continental plates form the volcanoes of the Andes Mountains and the volcanoes of the Pacific Northwest.
Hot Spots
A volcano forms above a hot spot when magma erupts through the crust and reaches the surface. Some hot spots lie in the middle of plates far from any plate boundary while some lie near plate boundaries.
Some hot spots in the ocean floor will gradually form a series of islands like the Hawaiian islands.
The hot spots under the continental plate produced Yellowstone National park.
Volcanoes Section 1
Volcanoes and Plate Tectonics
Volcanic belts form along the boundaries of earth’s plates. One major volcanic belt is the Ring of Fire.
At these plate boundaries, large pieces of crust diverge (pull apart) or converge (push together).
Diverging Boundaries ( pull apart)
Diverging plate boundaries occur along mid-ocean ridges (ocean to ocean plates) or rift valleys (continental to continental plates)
When lava pours out of the cracks of these valleys new mountains are built. Volcanoes are formed along these rift valleys.
Convergent Boundaries ( push against each other)
Converging plate boundaries have plates that submerge or sub-ducting plates they create trenches. When a oceanic and oceanic plate submerge a trench is formed, when a continental and continental plate submerge mountains are formed, when a oceanic and continental plate submerge a trench is formed.
Volcanoes form when oceanic and oceanic plates collide. They will form a string of islands called the island arc. An oceanic and continental plates form the volcanoes of the Andes Mountains and the volcanoes of the Pacific Northwest.
Hot Spots
A volcano forms above a hot spot when magma erupts through the crust and reaches the surface. Some hot spots lie in the middle of plates far from any plate boundary while some lie near plate boundaries.
Some hot spots in the ocean floor will gradually form a series of islands like the Hawaiian islands.
The hot spots under the continental plate produced Yellowstone National park.