Scientists believe that differences in ____ cause hot, plastic-like rock in the asthenosphere to rise toward Earth's surface.
a.
density
c.
weight
b.
magnetism
d.
composition
Answers
the answer is option d that is composition
Answer:
Scientists believe that differences in density cause hot, plastic-like rock in the asthenosphere to rise toward Earth's surface.
Explanation:
The rocky layer under the soil of the world is called the crust. This comprises the continents and ocean basins. The crust features a variable thickness, being 35-70 km thick on the continents and 5-10 km thick within the ocean basins. The crust consists mainly of alumino-silicates. the whole crust occupies just 1% of the Earth’s volume. The temperature of the crust increases as you go deeper into the world. It starts out cool but can rise up to 400 degrees C at the boundary between the crust and the mantle.
The tectonic plates are literally floating on the molten asthenosphere which is the lower mantle of the Earth. Earthquakes, volcanoes, mountains, and oceanic trench formation occur along plate boundaries.
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