ESS
Grade-10
Easy

Question

Large pieces of outer crust that float on the upper mantle is__________.

  1. Asthenosphere
  2. Tectonic plates
  3. Deep sea trenches
  4. Mid ocean ridge

hintHint:

Tectonic plates

The correct answer is: Tectonic plates


    • Earth's thin outer shell is broken into large pieces called tectonic plates. 
    • These plates float on the upper mantle.
    • So, the correct option is b.

    • Tectonic plates float on the asthenosphere, which is the uppermost layer of the mantle. 

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