Where is continental rifting currently taking place?
a. in the East African Rift Valley
b. at the East Pacific Rise
c. at the Mid-Atlantic Ridge
d. along the Cascade Mountains
e. between India and the rest of Asia
a. in the East African Rift Valley
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The Mohorovicic discontinuity exists because
A. the rock at this depth transitions from lower density to higher density. B. there is a difference in conductivity of the rocks on either side of the boundary. C. there is change in the physical state of rocks on both sides of the boundary. D. the temperature inside Earth changes with depth.
The asthenosphere is the outer layer of Earth, which is rigid and is broken into individual plates
a. True b. False
The world ocean ____
A) plays a minor role in the weather and shape of landmasses of Earth B) does not influence the way organisms live on land C) dramatically influences weather, nurtures life, and provides crucial natural resources D) has an average depth that represents over half of Earth's radius
What is a typical range of pore sizes in rock?
A) 5 micrometers to 100 micrometers B) 0.1 millimeter to 0.8 millimeter C) 0.1 millimeter to 3 centimeters D) 10 millimeters to 5 centimeters