If the mantle has a density of 3000 kg/m3 and a section of crust has a density of 2000 kg/m3, what percent of the crust would stick up above the top of the mantle and what percent would stick down into the mantle?
What will be an ideal response?
2000 km/m3 divided by 3000 km/m3 results in 2/3rds, which means that 2/3rds (66.6%) of the crust would be below water, while 1/3 (33.3%) of the block would be above water.
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Figure 24.8 is a portion of the Philipp, Mississippi, 7.5-minute quadrangle in northwestern Mississippi. The Tallahatchie River flows through the landscape from west to east. (Remember to use the topographic map symbol legend inside the front cover of this manual.)
Review Figure 24.4, analyze Figure 24.8 closely, and answer the following questions and completion items about Figure 24.8.
Analyze the map and select the proper response for each missing term or phrase. 
Analyze the map and select the proper response for missing term or phrase for number 7.
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The pipes that deliver water to users and hydrants on individual streets are ______.
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