Which term best describes the large pieces into which Earth's lithosphere is divided?

Which term best describes the large pieces into which Earth's lithosphere is divided?

• A. Tectonic plates
• B. Continents
• C. Ocean basins
• D. Fault lines

Answer: (A)

Earth's lithosphere is divided into large moving blocks called tectonic plates. These rigid slabs include both continental crust and oceanic crust and float on the partially molten mantle beneath. The way these plates interact at their boundaries—pulling apart, colliding, or slipping past one another—drives earthquakes, volcanoes, and the creation of mountains, shaping the planet's surface over long timescales. Continents describe landmasses that sit on top of some plates, but they’re not the whole plates themselves. Ocean basins are the deep areas of the ocean floor that lie between plates, not the pieces that make up the lithosphere. Fault lines are the cracks where plates meet or slide past each other, but they’re features within the plates, not the large blocks themselves. The term that best describes the large chunks of the lithosphere is tectonic plates.

Earth's lithosphere is divided into large moving blocks called tectonic plates. These rigid slabs include both continental crust and oceanic crust and float on the partially molten mantle beneath. The way these plates interact at their boundaries—pulling apart, colliding, or slipping past one another—drives earthquakes, volcanoes, and the creation of mountains, shaping the planet's surface over long timescales.

Continents describe landmasses that sit on top of some plates, but they’re not the whole plates themselves. Ocean basins are the deep areas of the ocean floor that lie between plates, not the pieces that make up the lithosphere. Fault lines are the cracks where plates meet or slide past each other, but they’re features within the plates, not the large blocks themselves. The term that best describes the large chunks of the lithosphere is tectonic plates.