Scientists have direct evidence of the Earth's structure to
A) the inner core.
B) the upper mantle (~250 km (155 mi)).
C) about 2 km (1.2 mi) from the surface.
D) 10 km (6 mi) from the surface, based on the deepest well shaft.
C
You might also like to view...
Which statement about the IPCC findings is accurate?
A. It establishes a high degree of certainty in the results. B. It proves beyond a shadow of a doubt that global warming is caused by humans. C. It proves beyond a shadow of a doubt that global warming is natural. D. It shows how a bunch of scientists have found a way to keep getting funded to do bogus research.
By the end of the twentieth century changes in urban structure in the United States meant that most of the largest cities in the United States were located in ________
A) The Northeast B) The Sunbelt C) The Northwest D) The Great Plains
An igneous rock that cools deep inside the Earth is called a(n) ________ igneous rock
Fill in the blank(s) with correct word
What is the driving force behind ridge push?
A. Gravity B. Temperature C. Radioactivity D. Pressure