Each circle represents an atom. Which of the following boxes contains an element? A compound? A mixture?
A. element: C; compound: A, B; mixture: B
B. element: A, C; compound: A, B; mixture: A
C. element: A, C; compound: A, B; mixture: A, B
D. element: A, C; compound: A, B, C; mixture: A, B
Answer: B
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A positive curvature value means an upwardly ________ surface and a negative curvature value means an upwardly ________ surface:
A. convex, concave B. concave, convex
A watershed is ________
A) an inland basin that connects to another inland basin B) the water held in the atmosphere prior to returning to Earth in the form of rainfall C) a river that drains into the sea D) the area of land from which rainfall drains into rivers or lakes E) a term used to describe water stored underground
Oceans heat and cool more slowly than land because of
A. oceans' high specific heat dampen temperature changes. B. great amounts of latent heat available to directly warm ocean water. C. oceans' lack of transparency dampen temperature changes. D. lack of mixing through the water column.
The core-periphery model can be applied to which countries?
A. United States B. Germany C. France D. Japan E. all of these