Which layer of Earth is the coolest in temperature?
The earth has four main layers consisting of two cores, the mantle, and the crust. The inner core is a solid sphere composed of predominately iron and nickel. The outer core is mostly liquid iron and nickel. The mantle makes up the majority of the earth's volume, and the crust is the outermost layer of the earth.
Answer and Explanation:
The coolest layer of the earth is the crust.
The mantle is hot enough to melt rocks, and the cores are even hotter. The cool temperature of the crust...
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from Earth Science 101: Earth ScienceChapter 4 / Lesson 4