Which crust is thinner and more dense?

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Multiple Choice

Which crust is thinner and more dense?

Explanation:
The question shows how thickness and density differ between the two main types of Earth's crust. Oceanic crust is thinner, only about 5–10 kilometers thick, and more dense, roughly 3.0 g/cm^3, because it is made mostly of basaltic rock. Continental crust is thicker, around 30–50 kilometers, and less dense, about 2.7 g/cm^3, due to its granitic composition. The other two options aren’t crusts at all—the asthenosphere is a partially molten layer beneath the crust, and the mantle lies beneath the crust and extends much deeper. So the layer that is both thinner and denser is oceanic crust.

The question shows how thickness and density differ between the two main types of Earth's crust. Oceanic crust is thinner, only about 5–10 kilometers thick, and more dense, roughly 3.0 g/cm^3, because it is made mostly of basaltic rock. Continental crust is thicker, around 30–50 kilometers, and less dense, about 2.7 g/cm^3, due to its granitic composition. The other two options aren’t crusts at all—the asthenosphere is a partially molten layer beneath the crust, and the mantle lies beneath the crust and extends much deeper. So the layer that is both thinner and denser is oceanic crust.

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