Unit 5 Practice Quiz

Unit 5 Practice Quiz - 1. As water from rain soaks through...

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1. As water from rain soaks through the soil, the water typically: A. Loses carbon dioxide (CO 2 ) to plant roots, becoming more basic. B. Gains carbon dioxide (CO 2 ) from the soil, becoming more acidic. C. Neither gains nor loses carbon dioxide (CO 2 ). D. Gains humic compounds from the air, becoming a strong base. E. None of the other choices here is even close to being correct. CO 2 is fairly soluble in water. Lots of things living in the soil emit carbon dioxide, and soils contain a lot of carbon dioxide that helps make water acidic. Humic compounds are picked up from soil by water, and make the water more acidic. Points Earned: 1/1 Correct Answer: B Your Response: B 2. Air that passes over the Sierra Nevada from the Redwoods to Death Valley is warmed by roughly 30 o F, even if the air goes over at night. Where does the energy come from? A. The rotation of the Earth, which causes winds to curve as they blow over the surface B. Volcanic eruptions from the peaks along the Sierra C. The heat that had been stored during evaporation from the ocean and was released when clouds formed on the west side of the Sierra D. Sunshine heating the air while it is passing over the mountains E. Gas-passing marmots, such as George, seen below;
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Unit 5 Practice Quiz - 1. As water from rain soaks through...

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