When the speed of a horizontally-moving projectile near Earth's surface is 8 km/s
A. it is an Earth satellite.
B. it has a circular trajectory about Earth's center.
C. its trajectory matches the curve of Earth.
D. all of the above
Answer: D
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____________________ refers to the formation of life from non-living matter. Fill in the blank(s) with the appropriate word(s)
The type of rock shown in this photograph is
A. breccia. B. conglomerate. C. sandstone. D. shale.
Which of the following factors prohibits the marine west coast climate of the U.S. from extending farther inland?
a. latitude b. ocean currents c. prevailing winds d. mountain barriers