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The primary cause of an earthquake is faults on the crust of the earth. The cracks or sudden slips of the land are known as faults or fault planes. The point of origin of the earthquake is inside the earth and is known as the hypocenter. Maximum destruction is caused at the epicenter, the surface above the hypocenter. When there are sudden movements in the various layers of the earth, crust or mantle, concentric waves are produced. These waves are known as seismic waves and are of three types; Primary Waves (P-Waves), Secondary Waves (S-Waves) and Surface Waves (L-Waves). These waves have different patterns of movement. Earthquakes usually have foreshocks and aftershocks. The main earthquake or the one with the maximum magnitude is known as the main shock. Its intensity is calculated by the magnitude of seismic waves, measured with the help of a seismograph. The measurement is taken on the Richter scale.
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What is the main reason for an earthquake?
The collision of tectonic plates are usually the main reason for earthquakes.
Earthquakes that immediatly follow a major earthquake shock?
They are called aftershocks, tremors that follow the main shaking.
How many main causes cause mechanical weathering?
4 main causes cause mechanical weathering!
What are the causes and effects of beach erosion?
The main cause of beach erosion is large storms and hurricanes. With the high winds and the increased wave size, the water level rises up and washes away a portion of the beach. Over time, this can cause the beach to become smaller.
What are the main characteristics of earthquakes?
The earthquakes main causes are because of the too plates bang together
Is the motion of lithospheric plates a major cause of earthquakes?
It is the main cause of earthquakes. However you may get minor earthquakes due to volcanic activity or mass wasting events.
What is the main theory about the cause of volcanic activity and earthquakes in this region?
Plate tectonics.
What is the main cause of earthquake's?
The main cause of earthquakes is when there is a sudden movement of various plate boundaries or when plates scrape against each other. Some earthquakes are also caused from old plate boundaries or faults. Many earthquakes happen at faults, such as the San Andreas Fault in California.
Can earthquakes occur on the coast and by trenches?
Yes, depending whether the main cause was the volcano erupting.
Do earthquakes have to occur on land?
Nope - they can occur at sea too - they're the main cause of tidal waves.
What is the main cause of a landslide?
tectonic movements coupled with a slope greater than the angle of inclination can cause a landslide
What is the main cause of continental drift earthquakes and volcanic eruptions?
It made the plates move faster i don't know i am trying to fiqure it out
What were the main effects of the earthquake on people and the environment in the Indonesian tsunami?
Earthquakes produce various damaging effects to the areas they act upon. This includes damage to buildings and in worst cases the loss of human life. The effects of the rumbling produced by earthquakes usually lead to the destruction of structures such as buildings, bridges, and dams. They can also trigger landslides. Besides producing floods and destroying buildings, earthquakes that take place under the ocean can sometimes cause tsunamis, or tidal waves. Tsunamis are high and long walls of water which travel at a very rapid rate. They are notorious for destroying entire populations and cities near coastlines.
What was the main cause of death in haiti earthquake?
the main cause od death seems to be 'death by buildings' and not by the actual earthquakes them self because the earthquake shakes the buildings and if the builds are not earthquake, they fall down and kill nearly everyone underneath it.
What is the process of rocks breaking down into smaller pieces explain 2?
it is called weathering; the rocks get weathered by wind, water, or earthquakes (main examples) and peices break off
Does certain weather cause volcanoes to happen?
Earthquakes is a main one because when two plate boundries rub together they cause an earthquake and plate bountries push together to form a volcano :)
Where are main spots of earthquakes?
The main spot, or epicenter is the center of the earthquake.
