Table of Contents
- 1 What are rocks that break and move past each other called?
- 2 When rocks move in opposite directions on either side of a fracture This is known as?
- 3 When the rock above the fault surface moves down?
- 4 How the rocks on either side move relative to each other?
- 5 What will possibly happen when rocks bend without breaking?
- 6 How does rock move above and below a fault?
- 7 What causes tectonic plates to move away from each other?
What are rocks that break and move past each other called?
Strike-slip faults indicate rocks are sliding past each other horizontally, with little to no vertical movement. Both the San Andreas and Anatolian Faults are strike-slip.
When rocks move in opposite directions on either side of a fracture This is known as?
If the blocks of rock on one or both sides of a fracture move, the fracture is called a fault (figure 11). Sudden motions along faults cause rocks to break and move suddenly. The energy released is an earthquake.
When the rock above the fault surface moves down?
Chapter 11 Vocabulary – Earthquakes
| A | B |
|---|---|
| Earthquake | Vibrations produced when rock breaks along a fault. |
| Normal Fault | Break in rock caused by tension forces, where rock above the fault surface moves down relative to the rock below the fault surface. |
When the rocks break they move along?
Earthquake 3
| A | B |
|---|---|
| faults | when rocks break, they move along surfaces called ____ |
| stress | to relieve _____ caused by plate movement, rocks tend to bend, compress, or stretch |
| elastic | when rocks are stressed beyond their ____ limit they break, move along the fault, and return to their original shape. |
When compression forces move rocks upward in relation to the rock below?
3) reverse fault When compression forces squeeze rock, the rock above the fault surface is forced up and over the rock below the fault surface. This is called a reverse fault. At a reverse fault, rock above the fault surface moves upward in relation to the rock below the fault surface.
How the rocks on either side move relative to each other?
Rocks on either side of the fault are moving past each other without much upward or downward movement. Shear forces push rocks past each other.
What will possibly happen when rocks bend without breaking?
If rocks tend to bend without breaking, they are said to be ductile. If a rock bends but is able to return to its original position when the stress is released, it is said to undergo elastic behavior. The heat and pressure cause deep crustal and mantle rocks to be ductile.
How does rock move above and below a fault?
The vibrations produced by the breaking of rock. Rock above the fault surface moves downward in relation to rock below the fault surface. Ex. Kanab, Utah. If rocks break from forces pushing from opposite directions, rock about this fault surface is forced up and over the rock below the fault surface.
What causes rocks inside the Earth to be pulled apart?
Most earthquakes result from rocks ______, _____ or _____. What causes rocks inside Earth to be pulled apart? this is caused by rock above the fault moving downward in relation to the rock below the fault. These are created by shear forces.
How does the Earth Move during an earthquake?
Rocks move past each other without much upward or downward movement. epicenter The point on the earth’s surface directly above the earthquake focus. focus The measure of the energy released during an earthquake.
What causes tectonic plates to move away from each other?
Convection currents drive the movement of Earth’s rigid tectonic plates in the planet’s fluid molten mantle. In places where convection currents rise up towards the crust’s surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig. 7.21).