In trying to understand the formation of the early Earth, some researchers have suggested that the planet was dry and inhospitable to life until icy comets pełted the earth and deposited water on the surface. Wendy Panero, associate professor of earth sciences at Ohio State, and doctoral student Jeff Pigott are pursuing a different hypothesis: that Earth was formed with entire oceans of water in its interior, and has been continuously supplying water to the surface via plate tectonics ever since. Researchers have long accepted that the mantle contains some water, but how much water is a mystery. And, if some geological mechanism has been supplying water to the surface all this time, wouldn't the mantle have run out of water by now? Because there's no way to directly study deep mantle rocks, Panero and Pigott are probing the question with high-pressure physics experiments and computer calculations. "When we look into the origins of water on Earth, what we 're really asking is, why are we so different than all the other planets?" Panero said. "In this solar system, Earth is unique because we have liquid water on the surface. We 're also the only planet with active plate tectonics. Maybe this water in the mantle is key to plate tectonics, and that's part of what makes Earth habitable." Gorder, Pam F. "Study Hints That Ancient Earth Made Its Own Water-Geologically." The Ohio State University News Room. Ohio State University, 17 Dec. 2014. Web. 25 Feb. 2015. 1. According to this article, where did Earth's water come from? 2. What evidence does this article give to support the author's claim?
In trying to understand the formation of the early Earth, some researchers have suggested that the planet was dry and inhospitable to life until icy comets pełted the earth and deposited water on the surface. Wendy Panero, associate professor of earth sciences at Ohio State, and doctoral student Jeff Pigott are pursuing a different hypothesis: that Earth was formed with entire oceans of water in its interior, and has been continuously supplying water to the surface via plate tectonics ever since. Researchers have long accepted that the mantle contains some water, but how much water is a mystery. And, if some geological mechanism has been supplying water to the surface all this time, wouldn't the mantle have run out of water by now? Because there's no way to directly study deep mantle rocks, Panero and Pigott are probing the question with high-pressure physics experiments and computer calculations. "When we look into the origins of water on Earth, what we 're really asking is, why are we so different than all the other planets?" Panero said. "In this solar system, Earth is unique because we have liquid water on the surface. We 're also the only planet with active plate tectonics. Maybe this water in the mantle is key to plate tectonics, and that's part of what makes Earth habitable." Gorder, Pam F. "Study Hints That Ancient Earth Made Its Own Water-Geologically." The Ohio State University News Room. Ohio State University, 17 Dec. 2014. Web. 25 Feb. 2015. 1. According to this article, where did Earth's water come from? 2. What evidence does this article give to support the author's claim?
Chapter23: Mental Health
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Transcribed Image Text:A (Lite Science) Credit 1
K Andrea Ortiz - CA Biology A Cred x
K Andrea Orliz - Physical Educatio x
K Andrea Ortiz - CA English 9A Tie X
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In trying to understand the formation of the early Earth, some researchers have suggested that the planet was
dry and inhospitable to life until icy comets pelted the earth and deposited water on the surface.
Wendy Panero, associate professor of earth sciences at Ohio State, and doctoral student Jeff Pigott are
pursuing a different hypothesis: that Earth was formed with entire oceans of water in its interior, and has
been continuously supplying water to the surface via plate tectonics ever since.
еech
Researchers have long accepted that the mantle contains some water, but how much water is a mystery. And,
if some geological mechanism has been supplying water to the surface all this time, wouldn't the mantle have
run out of water by now?
Because there's no way to directly study deep mantle rocks, Panero and Pigott are probing the question with
high-pressure physics experiments and computer calculations.
"When we look into the origins of water on Earth, what we 're really asking is, why are we so different than
all the other planets?" Panero said. "In this solar system, Earth is unique because we have liquid water on
the surface. We're also the only planet with active plate tectonics. Maybe this water in the mantle is key to
plate tectonics, and that 's part of what makes Earth habitable."
Gorder, Pam F., "Study Hints That Ancient Earth Made Its Own Water Geologically." The Ohio State University News Room. Ohio State University, 17 Dec. 2014.
Web. 25 Feb. 2015.
1. According to this article, where did Earth's water come from?
2. What evidence does this article give to support the author's claim?
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