Plate Tectonics and Volcanic Eruption
This section is about plate tectonics and volcanic eruption.
Here are some vocabulary for plate tectonics:
Hot Spot-intensely hot region deep within the Earth that rises to just underneath the surface.
Sonar-method of determining the presence and location or an object using sound waves.
At convergent boundaries, plates collide with one another. The collision buckles the edge of one or both plates, creating a mountain range or subducting one of the plates under the other, creating a deep seafloor trench. At convergent boundaries, continental crust is created and oceanic crust is destroyed as it subducts, melts, and becomes magma. They also create earthquakes and often forms chains of volcanoes.
At divergent boundaries, plates separate, forming a rift valley. Therefore, at divergent boundaries, oceanic crust is created. The mid-ocean ridge is a 65,000 kilometers long and 1,500 kilometers wide divergent boundary.
In a transform boundary the plates slide past each other. The San Andreas Fault is an example of a transform boundary. They can produce earthquakes. The Pacific and North American plate make a transform boundary.
Volcanoes are manifestations of the fiery power contained deep within the Earth. These formations are essentially vents on the Earth's surface where molten rock, debris, and gases from the planet's interior are emitted. When thick magma and large amounts of gas build up under the surface, eruptions can be explosive, expelling lava, rocks, and ash into the air. Less gas and more viscous magma usually mean a less dramatic eruption, often causing streams of lava to ooze from the vent.
Here are some fun facts about volcanoes:
1) About 1,000 volcanoes on Earth are considered active, meaning they show some level of activity and are likely to explode again.
2) Scientists estimate that more than 260000 people have died in the past 300 years from volcanic eruptions.
3) A large eruption can be extremely dangerous for people living near a volcano. Flows of searing lava, which can reach 2000 degrees fahrenheit, or move, can be released, burning everything in its path, including whole towns.
Here are some vocabulary for plate tectonics:
Hot Spot-intensely hot region deep within the Earth that rises to just underneath the surface.
Sonar-method of determining the presence and location or an object using sound waves.
At convergent boundaries, plates collide with one another. The collision buckles the edge of one or both plates, creating a mountain range or subducting one of the plates under the other, creating a deep seafloor trench. At convergent boundaries, continental crust is created and oceanic crust is destroyed as it subducts, melts, and becomes magma. They also create earthquakes and often forms chains of volcanoes.
At divergent boundaries, plates separate, forming a rift valley. Therefore, at divergent boundaries, oceanic crust is created. The mid-ocean ridge is a 65,000 kilometers long and 1,500 kilometers wide divergent boundary.
In a transform boundary the plates slide past each other. The San Andreas Fault is an example of a transform boundary. They can produce earthquakes. The Pacific and North American plate make a transform boundary.
Volcanoes are manifestations of the fiery power contained deep within the Earth. These formations are essentially vents on the Earth's surface where molten rock, debris, and gases from the planet's interior are emitted. When thick magma and large amounts of gas build up under the surface, eruptions can be explosive, expelling lava, rocks, and ash into the air. Less gas and more viscous magma usually mean a less dramatic eruption, often causing streams of lava to ooze from the vent.
Here are some fun facts about volcanoes:
1) About 1,000 volcanoes on Earth are considered active, meaning they show some level of activity and are likely to explode again.
2) Scientists estimate that more than 260000 people have died in the past 300 years from volcanic eruptions.
3) A large eruption can be extremely dangerous for people living near a volcano. Flows of searing lava, which can reach 2000 degrees fahrenheit, or move, can be released, burning everything in its path, including whole towns.