SCI 200--Practice Milestone Unit 4 Questions and Answers Rated A

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SCI 200--Practice Milestone Unit 4 Questions and Answers Rated A Julie sighed and closed her textbook. She was convinced. "Wow, global warming really is real," she said to her roommate. "What?" ya... wned Elena. "Nah, I don't think so. Doomsayers are always going on about that." Julie opened the textbook again. "Look at this photograph of glaciers. Look at how much has melted in just the last 50 years." Elena glanced at the photo without much interest. "Glaciers are like miles and miles of ice. Not enough of them is going to melt to make a difference." Choose the best response to Elena's assertion from the options below. Sea levels have always been on the rise. Sea levels fluctuate for many years. Glaciers melt and re-form without affecting sea levels. Glacial melt and rising sea levels are directly linked. ✔✔Glacial melt and rising sea levels are directly linked. Of these sources of greenhouse gases, which produces the least? Industry Agriculture Energy supply Forestry ✔✔Agriculture A new business in Alaska pumps 360-degree fluids from the earth into a tank held at a low pressure, which causes the fluids to immediately turn into steam that drives a generator. This is an example of using which of the following types of energy? Natural gas Geothermal Hydroelectrical Biomass ✔✔Geothermal Joe is explaining the causes of climate change to his son and provides this sequence of events: 1. Solar radiation from the sun is directed at Earth. 2. Some radiation is reflected back from the Earth's surface. 3. Some of this radiation is absorbed by greenhouse gases. 4. ______________________________________________ 5. The atmosphere gets warmer. Which statement belongs in Step 4? Methane and carbon dioxide attracts the radiation. Cloud cover and atmospheric moisture dilute the radi [Show More]

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