Does plate tectonics make Earth smaller or bigger?

Question:

Does plate tectonics make Earth smaller or bigger?

Plate Tectonics:

Plate Tectonics is the name given to the theory that the Earth's surface is made up of seven large plates and multiple smaller plates, with their movements being the cause of earthquakes and volcanic activity throughout the world.

Answer and Explanation:

Plate tectonic movement does not make the planet bigger or smaller. This is because it does not cause the breakaway of any part of the planet, nor does it cause nearby mass to gravitate towards the planet. All it merely does is to alter the planet's surface.


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Plate Tectonics: Theory & Definition

from General Studies Earth & Space Science: Help & Review

Chapter 7 / Lesson 5
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