What is a method by which the present rate of motion between two plates can be measured accurately? What will be an ideal response?


The travel of a laser beam can be timed from one plate to another by bouncing it from a satellite and
by calculating the difference in arrival times of a quasar signal at two plates over a period of time.

Environmental & Atmospheric Sciences

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The resistance to movement or deformation of soil is its

A. mass B. density C. shear strength D. shear force

Environmental & Atmospheric Sciences

In the figure, [INSERT FIGURE 6-12. REMOVE ALL TEXT EXCEPT " ", "Surface", "500 m" and "800 m". REMOVE RED DASHED LINE AND BLUE ARROWS. NO CAPTION]

A) the air above 500 m is stable B) the air above 500 m is unstable C) the air below 500 m is more stable than the air above 500 m D) the air above 500 m is more unstable than the air below 500 m

Environmental & Atmospheric Sciences

What is the range of the angle of repose for most dry, unconsolidated materials (such as dry sand)?

a. 0o ~10o b. 15o~20o c. 30 o ~ 37 o d. 50 o ~ 60 o

Environmental & Atmospheric Sciences

Where is the greatest potential for the formation of a great fully developed sea?

a. Gulf Stream b. West Wind Drift c. Arctic Sea d. Northern Pacific Ocean e. Mediterranean Sea

Environmental & Atmospheric Sciences