Dynamic Plate Tectonics and Earth's Evolution Practice Quiz (8 questions)

Explanation

The source explicitly states that Harry Hess proposed the hypothesis of seafloor spreading in 1959, making it the correct date for the event.

Explanation

Mobilismo geológico is characterized by the idea that continents are mobile and have moved over Earth's geological history. The concept challenges fixism by proposing that continents once formed Pangea and later drifted apart, indicating significant movement over time.

Explanation

Harry Hess proposed the hypothesis of seafloor spreading in 1962, suggesting new oceanic crust is formed at mid-ocean ridges and spreads outward, which was crucial for plate tectonics development.

Explanation

Mobilismo geológico describes the concept that continents are mobile and have moved over geological time, opposing fixed continents theories.

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Pangea is the supercontinent that mobilismo suggests once existed, formed from earlier continents that later drifted apart.

Explanation

Neocatastrofism acknowledges that Earth's surface is shaped by both slow, continuous processes and sudden catastrophic events, providing a comprehensive understanding.

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Uniformitarianism, which states that geological processes occur gradually over long periods, is the principle that supports the neocatastrofist view of Earth's evolution.

Explanation

Harry Hess is credited with developing the seafloor spreading hypothesis in 1962, which was essential in establishing the theory of plate tectonics.