Question

true or false

1. topography expresses the differences of elevations of mountains and

the differences of depths in a body of water.

1. mount everest has the greatest actual height of any mountain in the

world.

1. the earth’s most extensive mountain system is underwater.
2. movement of molten magma within the crust can create tectonic forces.
3. a rift valley forms when blocks of rock strata between parallel faults sag,

creating cliff - like valley walls.

1. creationist geologists believe that all plateaus originally formed from

flood sediments.

1. the ages of the oceans can be calculated using the sedimentation rates

and the thickness of the sediments.

1. monadnocks are large masses of hardened magma that first formed

under sedimentary rock but were then exposed by erosion.

1. geologists believe that all “fossilized sand dunes” in sandstone are evi-

dence for wind deposition.

Explanation:

Q19:

Topography is about the detailed mapping of the surface features of an area, including elevation differences of land (like mountains) and depth differences of water bodies. So this statement is True.

Q20:

While Mount Everest has the highest elevation above sea level, Mauna Kea (when measured from its base on the ocean floor) has a greater actual height. So the statement that Mount Everest has the greatest actual height is False.

Q21:

The Mid - Ocean Ridge is the earth's most extensive mountain system and it is underwater. So this statement is True.

Q22:

The movement of molten magma within the Earth's crust can cause pressure and forces that lead to tectonic activities (like plate movements, folding, faulting). So this statement is True.

Q23:

A rift valley is formed when the blocks of rock between parallel normal faults (where the rock moves downwards) sag, creating valley walls that look like cliffs. So this statement is True.

Q24:

Creationist geologists, based on their interpretation of the biblical flood, believe that many plateaus were formed from flood sediments. So this statement is True.

Q25:

By knowing the sedimentation rate (how much sediment is deposited over time) and the thickness of the sediment layer, geologists can calculate the age of the ocean floor (since the ocean floor is covered with sediment). So this statement is True.

Q26:

Monadnocks are residual hills or mountains, usually composed of hard rock, that remain after the surrounding softer rock has been eroded away. They are not necessarily masses of hardened magma that formed under sedimentary rock. So this statement is False.

Q27:

Not all "fossilized sand dunes" in sandstone are necessarily evidence of wind deposition. There could be other processes (like underwater currents) that form similar structures. So this statement is False.

Answer:

1. True
2. False
3. True
4. True
5. True
6. True
7. True
8. False
9. False