The rate of cooling of an igneous rock can be determined by the:
a. silica content
b. color
c. quartz content
d. texture
d
You might also like to view...
Which of the following is an essential characteristic of an index fossil?
A) The organism lived in a very specific environment or two, such as tropical volcanic islands. B) The organism lived for a very limited period of geologic time. C) The fossils of the organism are exceptionally well preserved. D) The organism lived on the land, not in the ocean.
Which statement about India's resource and environmental problems is false?
A. India has 18% of world's people, but only 2.3 % of world's land resources. B. About one-half of India's cropland is degraded. C. About two-thirds of its water is seriously polluted. D. India has about 15% of the world's forests. E. Sanitation services are often inadequate.
What percentage people who die in hurricanes drown because of river floods near the coast?
a. less than 5 percent b. around 20 percent c. around 35 percent d. around 60 percent e. around 80 percent
What type of eruption is shown in this photograph?
A. pyroclastic flow B. lava flow C. lava fountain D. lava dome E. eruption column