What type of fault may form when rocks are pulled apart?

What type of fault may form when rocks are pulled apart?

Tensional stress, meaning rocks pulling apart from each other, creates a normal fault. With normal faults, the hanging wall and footwall are pulled apart from each other, and the hanging wall drops down relative to the footwall.

How does elastic rebound cause a tsunami?

During an earthquake, the ground shakes as stored up energy is released from rocks. Elastic rebound theory states that rock will deform plastically as stresses build up until the stresses become too great and the rock breaks. Tsunami are deadly ocean waves that are caused by undersea earthquakes.

How does Elastic Rebound create earthquakes?

If a stretched rubber band is broken or cut, elastic energy stored in the rubber band during the stretching will suddenly be released. Similarly, the crust of the earth can gradually store elastic stress that is released suddenly during an earthquake.

What happens to the seismic waves as they reach the boundaries of rock type?

When waves reach a boundary between different rock types, part of the energy is transmitted across the boundary. In general, the seismic velocity in Earth increases with depth (there are some important exceptions to this trend) and refraction of waves causes the path followed by body waves to curve upward.

What does elastic rebound cause?

Elastic rebound is what happens to the crustal material on either side of a fault during an earthquake. The rock becomes distorted, or bent, but holds its position until the earthquake occurs, and the rock snaps back into an unstrained position, releasing energy that produces seismic waves.

What is meant by elastic rebound in rocks quizlet?

Elastic rebound refers to how the slippage along a fault (i.e., earthquake) allows the deformed rock to regain its original shape in a new location.

What happens when seismic waves pass across the boundary between two different materials?

The waves are refracted as they travel through the Earth due to a change in density of the medium. This causes the waves to travel in curved paths. When the waves cross the boundary between two different layers, there is a sudden change in direction due to refraction.

How does faulting happen?

Faults are fractures in Earth’s crust where movement has occurred. Sometimes faults move when energy is released from a sudden slip of the rocks on either side. It forms when rock above an inclined fracture plane moves downward, sliding along the rock on the other side of the fracture. …