How many continental ice sheets are currently in existence?
A) None
B) One
C) Two
D) Ten
E) Too many to count
Answer: C
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Which of the following conditions act to limit vegetation in Namibia?
A) Lack of humidity B) Little precipitation C) Aridisols D) All of the choices are correct. E) None of choices are correct.
What is the average rate of seafloor spreading occurring in the Atlantic Ocean and occurring in the Pacific Ocean?
a. The rate of seafloor spreading at the East Pacific Rise is 2 centimeters per year, whereas the rate of seafloor spreading at the Mid-Atlantic Ridge is 15 centimeters per year. b. The seafloor at both the Mid-Atlantic Ridge and the East Pacific Rise is spreading at the rate of 5 centimeters per year. c. The seafloor at both the Mid-Atlantic Ridge and the East Pacific Rise is spreading at a rate of 2 centimeters per year. d. The rate of seafloor spreading at the Mid-Atlantic Ridge is 2 centimeters per year, whereas the rate of seafloor spreading at the East Pacific Rise is 15 centimeters per year. e. The seafloor at both the Mid-Atlantic Ridge and the East Pacific Rise is spreading at a rate of 15 centimeters per year.
How does water get from the oceans onto land?
-Ocean water evaporates to form solid water and moves into the atmosphere, where it condenses into liquid water and falls out of the atmosphere to land as rain. -Ocean water evaporates to form gaseous water and moves into the atmosphere, where it condenses into liquid water and falls out of the atmosphere to land as rain. -Ocean water condenses to form gaseous water and moves into the atmosphere, where it evaporates into liquid water and falls out of the atmosphere to land as rain. -Ocean water evaporates to form liquid water and moves into the atmosphere, where it condenses into liquid water and falls out of the atmosphere to land as rain. -Ocean water evaporates to form gaseous water and moves into the atmosphere, where it condenses into gaseous water and falls out of the atmosphere to land as rain.
There are several long-term changes in Earth's orbit that affect how heat from the Sun is distributed over the planet. Which of the following describes how the orbit changes from being elliptical to more circular?
A. solar obliqueness B. axial cyclicity C. eccentricity D. axial tilt E. precession