plates
There are continental plates (thick and made of granite) and oceanic plates (thin and made of basalt).
Large blocks of Earth's crust that drops down relative to other blocks, will form a rift valley (trench). The Great Rift Valley in Africa is one example.
These down-dropped blocks of crust are called grabens. Grabens are formed by the extensional forces that cause the crust to stretch and create space for the down-dropped blocks between the steeply dipping normal faults.
Fault
That's called a 'fault line'.
folding
The study of crustal changes caused by movements of large blocks beneath the crust is called plate tectonics :)
plate tectonics
fault block
Large blocks of Earth's crust that drops down relative to other blocks, will form a rift valley (trench). The Great Rift Valley in Africa is one example.
The fracture along blocks of crust (tectonic plates) is called a "fault" or "fault line".
Large blocks of rock under the Earth's crust are known as tectonic plates. These plates float on the semi-fluid asthenosphere and interact with each other, leading to various geological processes like earthquakes, volcanic eruptions, and mountain formation. The movement of these plates is responsible for shaping the Earth's surface over millions of years.
faulting causes large blocks of the Earth's crust to drop down relative to other blocks
This phenomenon is called tectonic plate movement. It occurs when large segments of the Earth's crust, known as tectonic plates, slowly shift and move over time. These movements can result in various geological events such as earthquakes, volcanic activity, and mountain formation.
The large landmasses on Earth's crust are called continents. These are the major divisions of land on our planet.
These down-dropped blocks of crust are called grabens. Grabens are formed by the extensional forces that cause the crust to stretch and create space for the down-dropped blocks between the steeply dipping normal faults.
Fault
Plates