As compared to basalt, granite has a
a. lower density.
b. higher density.
c. equal density.
d. similar proportion of crystals.
Answer: a. lower density.
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Hydrogen fuel cells
A. rely on direct energy from the sun. B. use geothermal energy to produce electricity. C. combine hydrogen and oxygen gas to produce electricity and water vapor. D. require complex carbohydrates as starting materials. E. break apart water molecules and use the hydrogen as energy.
Density is defined as:
a. layers that are separated. b. the speed at which a liquid moves. c. the weight of a substance. d. the mass per unit of volume.
Geography is best described as a discipline
A) concerned with memorizing the locations of places, especially the largest/longest phenomena. B) in which space, how the earth's surface is used, and how human activities differ from place to place is studied. C) that uses maps, performs cartographic analysis, and publishes atlases. D) that is a branch of Geology. E) that incorporates the latest technologies available.
Which of the following is CORRECT regarding daylength?
A) The equator experiences six hours difference in daylength between the summer and winter. B) The range of daylength is shortest in the polar regions. C) Daylength is uniform at all latitudes throughout the year. D) The equator always receives equal hours of day and night.