"Weak" areas of the earth's crust are called faults.
A fault.
the area of of earths crust that is the thickest is the mantle.
The weak area in the Earth's crust where magma rises is known as a magma chamber or a volcanic conduit. These regions are characterized by lower pressure and temperature, allowing molten rock to accumulate and move toward the surface. When the pressure builds sufficiently, it can lead to volcanic eruptions. Additionally, these areas are often associated with tectonic plate boundaries or hotspots.
the area of of earths crust that is the thickest is the mantle.
mantle
Mantle
The answer to this question is called an active volcano.
No, mountains that are formed when molten materials reach the earth's surface through a weak area in the crust are typically referred to as volcanic mountains. Fault-block mountains, on the other hand, are formed by the movement of tectonic plates along faults, resulting in blocks of crust being uplifted or dropped down.
A volcano is a weak spot in the Earth's crust. So when the lava and pressure built up from so many years dormant the weak spot in the Earth's crust couldn't hold it and it just shot up the volcano and spewed out lava.
Continental crust beneath a tall, young mountain
crust
The area of Earth that forms the land is called the lithosphere. It includes the outermost layer of the Earth, which consists of the crust and the upper part of the mantle.