1.
A) tilted toward the sun B) tilted away from the sun C) close to the sun D) farther away from the sun 2.
A) Iceland B) Thailand C) The United States D) Columbia 3.
A) carbon dioxide B) oxygen C) water vapor D) hydrogen 4.
A) Earth's tilted axis B) Earth's rotation C) the distance between Earth and the sun D) the changing weather 5.
A) winter, toward B) summer, away from C) spring, away from D) summer, toward 6.
A) drought B) rainstorms C) strong storms D) snow 7.
A) 10,000 to 15,000 years B) 60,000 to 100,000 years C) 1,000 to 5,000 years D) 200,000 to 500,000 years 8.
A) midglacial periods B) interglacial periods C) antiglacial periods D) postglacial periods 9.
A) volcanic eruption B) meteorite collision C) movement of Earth's crustal plates D) forest fires 10.
A) Clusters B) Solar flares C) Sunspots D) CME's 11.
A) lesser B) negligible C) greater D) not important 12.
A) always bad for the environment B) in perfect amount on Earth C) necessary to keep Earth warm D) beneficial in large amounts 13.
A) melting glaciers B) increased global temperatures C) coral bleaching D) increased flooding
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