Flying by Pluto in July 2015, NASA's New Horizons spacecraft transmitted images of a complex landscape called Sputnik Planum. Which of the following best describes Sputnik Planum?
A) A large ice field with tongues of flowing ice
B) A large volcanic field with lava flows composed of frozen methane
C) A field of overlapping impact craters
D) A landscape shaped by flowing water
Answer: A
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Sharks, skates, rays, and chimaeras comprise the class ____________, and have a skeleton made of tough, elastic
____________. Fill in the blank(s) with the appropriate word(s).
Cartography is the science and profession of ____
a. data collection b. surveying c. navigation d. satellite sensor design e. mapmaking
Which ocean is Earth's largest?
-the Arctic Ocean -the Indian Ocean -the Atlantic Ocean -the Pacific Ocean
Which of the following elements would have been the first to form after the formation of the universe?
A) Lithium and carbon B) Helium and phosphorous C) Hydrogen and helium D) Iron and magnesium