The farther apart contour lines are on an isoline map, the steeper the gradient
a. True
b. False
Indicate whether the statement is true or false
False
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The oxidation of iron to rust is a problem structural engineers need to be concerned about, but the oxidation of aluminum to aluminum oxide is not. Why?
A. Aluminum oxide is even stronger than aluminum. B. Aluminum oxide is insoluble in water and thus forms a protective coating that prevents continued oxidation of the aluminum. C. The oxidation of aluminum is a very slow reaction, taking hundreds of years before any structural changes are noticed. D. Since aluminum is so light and inexpensive, it is easily replaced when corroded.
Humans affect mountain biomes by
a. plowing and conversion of pristine land to cropland b. depletion of groundwater c. increased air pollution from urban areas d. hydroelectric dams and reservoirs e. establishment of tree plantations
An "ice sheet" is also known as a(n)
A) alpine glacier. B) continental glacier. C) frozen lake. D) polar continent.
What happens to minerals in rocks that cool in the presence of the Earth's magnetic field?
A. The minerals align opposite to the field. B. The minerals are not aligned based on the field. C. The minerals align with the field.