Which of the following is considered a ferromagnesian silicate? CHOOSE ALL THAT APPLY.
a. potassium feldspar
b. muscovite
c. garnet
d. quartz
e. biotite
c. garnet
e. biotite
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How does the strength of continental crust vary with depth?
A) Rocks become stronger with depth and then get weaker deep in the crust. B) Rocks weaken with depth and then get stronger deep in the crust. C) Rocks systematically get stronger from the surface to deep in the crust. D) Rocks systematically get weaker from the surface to deep in the crust.
The development of agriculture during the Neolithic Revolution made food
A) less abundant and less reliable. B) more expensive and difficult to acquire. C) less of a limiting factor on population growth. D) less nutritious.
Thailand's prospects for addressing current environmental problems are
A) serious but more hopeful because of slower population growth. B) worse because of the decline in population and decline in per capita income. C) very good because much less land is needed for agriculture. D) very good because air and water pollution have declined along with population growth.
The specific heat of iron is 0.110 cal /g·°C. The heat of fusion of iron is 63.7 cal/g. The melting point of iron is 1530°C. How much heat must be added to 10.0 g of iron at 25°C to completely melt it?
A) 0.637 kcal B) 0.803 kcal C) 1.676 kcal D) 2.29 kcal