Data Set 1: Qualitative or Quantitative (circle one) Element Name
Percentage of Earth's Crust
47.9%
Oxygen
Silicon
28.9%
Aluminum
8.3%
Iron
5.2%
Data Set 2: Qualitative or Quantitative (circle one)
Distance from the Shore
5 kilometers
10 kilometers
15 kilometers
20 kilometers
Depth of Ocean
1000 meters
4000 meters
3000 meters
5000 meters

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answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.