PRE-LAB QUESTIONS 1. At what types of boundary do mid-ocean ridges occur? (Select all that apply.) a. Convergent boundary b. Divergent boundary c. Transform boundary 2. True or False? Compressional forces cause normal faulting. 3. When the hanging wall block moves up relative to the footwall block it is called a ___. a. Normal Fault b. Reverse Fault c. Strike-Slip Fault 4. When the footwall block moves up relative to the hanging wall block it is called a ___. a. Normal Fault b. Reverse Fault c. Strike-Slip Fault 5. What method do scientists use to locate the epicenter of an earthquake?

Type of oceanic boundaries.

The lithospheric plates on the earth are divided into numerous boundaries such s those of the convergent, divergent and transform boundary these boundaries have different origins and mean construction, destruction and sliding past one another.

The answer for this is a Divergent Boundary.

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The correct answer for this is B) Divergent Boundary

Explanation:

A divergent boundary is a rift beneath the ocean where two tectonic plates adjacent to one another begin to drift apart. If they do this long enough, it leads to the eruption of molten magma (basaltic molten rock) through the crevice created.

Answer

2. The answer is FALSE

Explanation:

Compressional tension refers to when two rock slabs, due to movements of the earth crust, crush against one another in a head-long fashion. The type of fault created is called reverse faults.

Normal faults, on the other hand, are caused by Tensional Stress which happens when the rock slabs due to tension grow apart.

Answer

3. The correct answer is B) Reverse Fault.  

Explanation

Reverse faults happen as a result of compressional tension. This makes the footwall block or lower block to moves upwards relative to the position of the standing or hanging wall block.

Answer

4. the correct answer is A) Normal Fault

Explanation:

This is like an opposite of the Reverse fault. Whilst in the reverse fault the footwall block moves downwards relative to the position of the standing wall block, with a thrust fault, in this case, the hanging wall moves downwards relative to the position of the footwall block.

Answer

5. Triangulation is the method scientists use to locate the epicentre of an earthquake.

Explanation:

To do this, they have to compute seismic data from three or more locations. The data is plotted on a graph. The intersection point is taken as the epicentre. Seismic data is the information about an earthquake and is recorded for collection by on seismographs located across the world.

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