Some is caused by magma following heat vectors within the body of the planet, and some is caused by tidal forces working on the earth from the outside.
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∙ 13y agoStress in the Earth's crust is caused by tectonic forces like plate movements, which create pressure along faults and boundaries where plates meet. This stress can build up over time and be released in the form of earthquakes when the rocks along these fault lines break.
The earth's crust is not stress
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
Plate tectonics, the movement of the large pieces of the earth's crust, give rise to great stress along the boundaries of the plates. Wikipedia has a post on plate tectonics, and a link is provided.
A divergent boundary causes tensional stress, where tectonic plates are moving away from each other. This stress results in the stretching and thinning of the Earth's crust, leading to the formation of new crust through volcanic activity and seafloor spreading.
The famous break in the Earth's crust that causes earthquakes to occur is called a fault line. Movement along fault lines can result in earthquakes due to the build-up and release of stress between tectonic plates.
The movement in earths plates create powerful forces that pull or squeeze the rock in the crust.
Tension
It causes it to deform - this deformation is called "strain".
The earth's crust is not stress
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
Plate tectonics, the movement of the large pieces of the earth's crust, give rise to great stress along the boundaries of the plates. Wikipedia has a post on plate tectonics, and a link is provided.
Compression Stress Tension Stress Shearing Stress
it means earthquakes will happen more often
The primary forces that act on rocks in Earth's crust are compression and tension. Compression occurs when rocks are squeezed together, often leading to folding and faulting. Tension is when rocks are pulled apart, creating fractures and rifts. These forces are generated by tectonic plate movements and can result in various geological features.
Tectonic stress causes most earthquakes. This stress is generated as tectonic plates move and collide with each other, building up pressure that is eventually released as an earthquake. Other types of stress, such as volcanic or anthropogenic activities, can also trigger earthquakes in specific circumstances.
Faults in Earth's crust are caused by the movement of tectonic plates. When these plates collide, slide past each other, or pull apart, the stress that builds up along the plate boundaries can lead to the formation of faults. This can result in rocks breaking and sliding along the fault plane.
Plate motions produce stress in Earths crust that leads to faults, mountain building, and earthquakes.