The chemical formula of rust is Fe2O3. Which of the following is the correct common name for this compound?
A) iron oxide
B) ferric oxide
C) ferrous oxide
D) diiron trioxide
B
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What will be an ideal response?
This prevents wind from following the direction of the horizontal pressure gradient force:
A) friction with the ground. B) the earth's magnetic field. C) interaction with the solar wind. D) the Coriolis effect.
The main difference between edge cities and suburbs is what?
A) Suburbs are located further from the central city than edge cities B) Edge cities are located further from the central city than suburbs C) Suburbs are less reliant than edge cities on the central city for employment, shopping, recreation, and cultural activities D) Edge cities are less reliant than suburbs on the central city for employment, shopping, recreation, and cultural activities
What is the connection between the amount of silica in a melt and how viscous it is?
A) Silica forms strong bonds, so higher amounts of silica make for more viscous magma. B) Higher silica content lowers the melting temperature and since increasing the temperature of a magma decreases viscosity increasing silica content increases viscosity. C) Higher silica content means a larger amount of water a magma can dissolve and water decreases magma viscosity, so increasing silica conte