Explain why some lava flows cover large areas and others do not
What will be an ideal response?
One obvious reason is that the more lava that is erupted, the larger the area that it will cover. We also know that the area covered by lava relates to the viscosity of the lava flows. Low-viscosity lava flows (mafic) are able to flow more readily and cover large areas, whereas high-viscosity (felsic) lava flows are unable to move beyond the immediate vicinity of the volcanic crater.
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This map shows contours of the water table and the location of a factory that contaminated groundwater. Where would you drill wells to intercept the contamination?
A. southeast of the factory B. southwest of the factory C. right next to the factory D. north of the factory
Globalization moves jobs to where wages are low, and therefore, growth in the LDC middle classes is tied directly to losses in the MDC middle classes
a. True b. False Indicate whether the statement is true or false
Earth formed ____________________ billion years ago. Fill in the blank(s) with the appropriate word(s)
Which of the following describes the light reflecting and transmission characteristics of a mineral?
A) virtual absorption B) luster C) color streak D) fluorescence