Consider the following statements and choose the correct ones Rocks closer to the mid ocea...........

Geography Earth Geology

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Consider the following statements and choose the correct ones:

Rocks closer to the mid-oceanic ridges are normal polarity and are the youngest.
Sediments on the ocean floor are generally thin.
The deep trenches have deep-seated earthquake occurrences while in the mid- oceanic ridge areas, the quake foci have shallow depths.

Code:

2 Only

3 Only

1 and 2

1, 2 and 3

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Explanation:

The ocean floor has the same general character as the land areas of the world: mountains, plains, channels, canyons, exposed rocks, and sediment-covered areas. The floors of the great ocean basins consist to large extent of gently rolling hills, where slopes generally do not exceed a few degrees and the relief does not vary by more than a few hundred metres.
A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of ~ 2,600 meters (8,500 ft) and rises about two kilometers above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate boundary. The rate of seafloor spreading determines the morphology of the crest of the mid-ocean ridge and its width in an ocean basin. The production of new seafloor and oceanic lithosphere results from mantle upwelling in response to plate separation. The melt rises as magma at the linear weakness between the separating plates, and emerges as lava, creating new oceanic crust and lithosphere upon cooling.