Earth is composed of three concentric layers. What are they, and how do they differ?

What will be an ideal response?


The three major concentric layers are the crust, mantle, and core.
The crust is the thin, solid surface layer, and includes compositionally different oceanic and continental crust. The mantle is the thickest layer and is also mostly solid but includes the less rigid asthenosphere. The core is metallic, with an inner solid part and an outer liquid part.

Environmental & Atmospheric Sciences

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The nucleus of an electrically neutral iron atom contains 26 protons. How many electrons does this iron atom have?

A. 26 B. 52 C. 24 D. none

Environmental & Atmospheric Sciences

Pick two countries in Southeast Asia and describe and explain their economic growth (or lack thereof) over the last three or so decades. Choose one nation which has been a success and one which has been a failure so as to have a clear compare-and-contrast response.

What will be an ideal response?

Environmental & Atmospheric Sciences

________ air masses are colder than continental polar air masses

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

The global energy issue derives in part from the fact that fossil fuels

A) are distributed uniformly across Earth. B) are renewable energy sources. C) were formed in the far distant past. D) have an infinite supply. E) are too easily contaminated.

Environmental & Atmospheric Sciences