Answer :
The relationship between the earths crust and the ocean sizes is, So much of the Earth is hidden from view. Yes, you can see some of the rocky crust, but that's only 1 percent of the Earth's mass. Beneath the crust is the dense, semisolid mantle, which accounts for 84 percent of the planet that we know and love, EARTH. The earths mantle, Like the crust, contains rocks with large amounts of silicon and oxygen. Although, that's true, the mantle also has significant amounts of iron and magnesium. Although, the part of the mantle within the lithosphere is solid rock, the lower mantle is so hot that it can move and flow slowly over long periods of time.