Sills are ____
a. composed of extrusive igneous rock
b. mushroom-shaped flows of basalt
c. vertical walls of intrusive igneous rock cutting across rock layers
d. horizontal sheets of intrusive igneous rock between rock layers
e. the largest type of igneous intrusion
d
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Which of the following would not be a good idea in an area that has a high risk for earthquakes?
A) Construct all new buildings using rigid concrete or masonry B) Keep enough food and water for 72 hours in an easily carried backpack C) Have hospitals install computerized earthquake warning systems that will shut down natural gas systems and turn on back-up generators D) Require that new buildings be built to flex easily E) All of these would be a good idea.
Write a short paragraph distinguishing between conduction and convection. Give two examples of each
What will be an ideal response?
An increase in fluid pressure causes:
a. a decrease in effective normal stress b. an increase in shear strength c. a decrease in cohesion d. a decrease in angle of internal friction
Rime is produced by supercooled fog.
Indicate whether the statement is true or false.