- Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. ...
- Divergent boundaries – where two plates are moving apart. ...
- Transform boundaries – where plates slide passed each other.
What is the difference between convergent boundary and divergent boundary?
Divergent boundaries — where new crust is generated as the plates pull away from each other . Convergent boundaries — where crust is destroyed as one plate dives under another.
At which type of boundary does tension often occur?
Tensional stress happens at divergent plate boundaries where two plates are moving away from each other. Shear stress is experienced at transform boundaries
What process occurs along divergent plate boundary?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.
What are the 4 types of tectonic plate movement?
- Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. ...
- Divergent boundaries – where two plates are moving apart. ...
- Transform boundaries – where plates slide passed each other.
What are some examples of divergent boundaries?
Examples include the East Africa rift in Kenya and Ethiopia , and the Rio Grande rift in New Mexico. Where a divergent boundary crosses the ocean floor, the rift valley is much narrower, only a kilometer or less across, and it runs along the top of a midoceanic ridge.
Can divergent boundaries cause volcanoes?
Most volcanoes form at the boundaries of Earth’s tectonic plates. ... The two types of plate boundaries that are most likely to produce volcanic activity are divergent plate boundaries and convergent plate boundaries.
What are the two types of divergent plate boundaries?
At divergent boundaries, sometimes called constructive boundaries, lithospheric plates move away from each other. There are two types of divergent boundaries, categorized by where they occur: continental rift zones and mid-ocean ridges .
In which two places do divergent boundaries occur?
Divergent boundaries are typified in the oceanic lithosphere
What would be found at a divergent boundary?
A divergent boundary occurs when two tectonic plates move away from each other . Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.
What are the 2 types of tectonic plates difference?
There are two main types of tectonic plates: oceanic and continental . Oceanic – Oceanic plates consist of an oceanic crust called “sima”. Sima is made up primarily of silicon and magnesium (which is where it gets its name). Continental – Continental plates consist of a continental crust called “sial”.
What causes the tectonic plates to move?
The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
Does Earth become smaller or bigger when plates move?
But the Earth isn’t getting any bigger . ... In locations around the world, ocean crust
What is an example of transform boundaries?
The San Andreas Fault and Queen Charlotte Fault are transform plate boundaries developing where the Pacific Plate moves northward past the North American Plate. The San Andreas Fault is just one of several faults that accommodate the transform motion between the Pacific and North American plates.
What are the non examples of divergent boundaries?
- Ocean.
- Earthquake.
- Landforms.
- Tsunami.
- Fault.
Why does magma rise at a divergent boundary?
At divergent boundaries magma forms because of decompression melting . Decompression melting also takes place within a mantle plume. ... The higher viscosity prevents gases from escaping from the magma, and so felsic magmas are more pressurized and more likely to erupt explosively.
