Please Define the Following Key Terms

question 52

Short Answer

Please define the following key terms. Show Who? What? Where? When? Why Important?
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Definitions:

Oceanic Crust

The part of the Earth's crust that underlies the ocean basins, composed primarily of basalt and gabbro, and is denser than continental crust.

Reversed Magnetic Polarity

A condition where the magnetic north and south poles swap positions, a phenomenon observed in the Earth's geological history.

Compass Needle

The magnetized pointer on a compass that aligns itself with the Earth's magnetic field to indicate the direction of magnetic north.

Seamounts

Underwater mountains formed by volcanic activity, not reaching the ocean's surface, and often a hotspot of marine life.