You examine a rock that has large mineral crystals that are clearly visible. On those mineral crystals, you notice that there are numerous flat smooth surfaces, all oriented in the same directions within each specific mineral. The likely explanation for this is
A. the minerals are exhibiting cleavage surfaces.
B. the minerals grew that way as the sediments were deposited.
C. the minerals were forced into this orientation by the extreme heat and pressure associated with the formation of the rock.
D. the minerals have grown into one another at exactly the same angles.
E. None of these choices are correct.
Answer: A
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Suppose you were near an epicenter of an earthquake and felt the earth move as if you were in the ocean. What type of seismic wave would you have experienced?
Suppose you were near an epicenter of an earthquake and felt the earth move as if you were in the ocean. What type of seismic wave would you have experienced?
- Love wave
- P-wave
- Rayleigh wave
- S-wave
What are the reasons that volcanism is primarily a constructive process? What will be an ideal response?
When a rock is subjected to tectonic forces and experiences stress that is not the same in all directions, it is under
A. convergent stress. B. tensional stress. C. alternating pressure. D. differential stress.
Melting permafrost might accelerate climate change because
A. carbon dioxide is trapped as water melts. B. polar bears and other arctic species rely on permafrost. C. sea levels will rise. D. methane gas stored in the frozen ground will be released. E. coral reefs rely on methane.