How do we know that P and S waves do not travel through Earth at constant velocities?
What will be an ideal response?
Real P and S wave travel times from decades of earthquake records do not match the travel times you would predict based on the assumption that P and S wave velocities are constant throughout Earth. The P and S waves arrive sooner than predicted.
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Farmers in Burkina Faso utilize local ingenuity through the ________technique to dig a grid of planting pits that are filled with manure
A) microfinancing B) lingua franca C) zai D) ECOWAS
Examine the figure that shows the sequence of strata in three Colorado Plateau national parks. Which unit(s) are shared by Grand Canyon National Park and Zion National Park?
A) Toroweap and Kaibab B) Kaibab and Monekopi C) Moenkopi and Chinle D) Kaibab only
The general term for all glacial deposits is
A) alluvium. B) erg. C) glacial drift. D) talus.
If there are over 100 elements on the periodic table of elements, it would stand to reason that there would be millions of ways these elements could combine to form minerals. However, there are only 4000 named minerals
Why might there be so few minerals on Earth when there are so many possible combinations? What will be an ideal response?