GEOLOGY

Detailed explanation-1: -Although earthquakes and volcanoes can occur in plate interiors, these interactions are regarded to be the main cause of the majority of Earth’s seismic and volcanic activity. Therefore, the first statement is false, the second statement is true and the third statement is also false.

Detailed explanation-2: -Earthquakes Can Happen Along Intraplate Faults Earthquakes can occur along faults far from the edges of plates. Although these earthquakes are much less common, they are due to the same forces that cause earthquakes along plate boundaries.

Detailed explanation-3: -Boundaries between tectonic plates are made up of a system of faults. Each type of boundary is associated with one of three basic types of fault, called normal, reverse and strike-slip faults. Plates can move apart at a boundary.

Detailed explanation-4: -Normal faults are often found along divergent plate boundaries, such as under the ocean where new crust is forming. Long, deep valleys can also be the result of normal faulting.

Detailed explanation-5: -A fault is formed in the Earth’s crust as a brittle response to stress. Generally, the movement of the tectonic plates provides the stress, and rocks at the surface break in response to this. Faults have no particular length scale.