They're covered by sedimentary rock .
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A rugged area with large variations in elevation would have high relief, whereas a relatively flat location would have low relief.
Maps that capture data approximately alleviation are termed topographic maps. Maximum geologic maps include topographic information inside the form of contour strains.
Comfort is the distinction between lowest and highest elevation in a location. Only a few surfaces on the earth are genuinely flat. We describe deviations from flatness as relief.
Similarly to showing absolute elevation, contour strains, by means of their spacing, monitor the steepness of slopes at a look. On a steep slope, they have got close collectively.
To learn more about variation in elevation
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Earthquakes occur along plat boundaries and faults. Most earthquakes happen along the edge of continental and oceanic plates. Faults are found in the middle of the plates. They're like cracks that form when the different parts of the plates don't move in the same direction.
The answer is A. Volcanic flank collapse in the Canary Islands.
Geologists have suggested that the east coast of the United States faces a serious tsunami threat from volcanic flank collapse in the Canary Islands. A large volcano called Cumbre Vieja (located on La Palma), could erupt and create a tsunami that may reach the East Coast of the United States.