Earth Science - January 2010

Base your answers to questions 36 through 39 on the diagram of the water cycle below. Letter A represents a process in the water cycle. Points X and Y represent locations on Earth’s surface.

36 The process represented by A is

(1) precipitation     (3) condensation
(2) transpiration    (4) saturation

37 Rainwater will enter the ground at X if the ground is

(1) saturated and permeable        (3) unsaturated and permeable
(2) saturated and impermeable    (4) unsaturated and impermeable

38 The amount of runoff at Y will increase as the

(1) slope of the land decreases
(2) porosity of the soil increases
(3) evaporation rate exceeds the infiltration rate
(4) precipitation rate exceeds the infiltration rate

39 Which process in the water cycle is directly responsible for cloud formation?

(1) condensation     (3) precipitation
(2) infiltration         (4) evaporation

Base your answers to questions 40 through 43 on the weather map below, which shows a low-pressure
system over the central United States. Isobars are labeled in millibars. Points A, B, C, and D represent locations on Earth’s surface.

Click om image to enlarge

40 The circulation of surface winds associated with this low-pressure system is

(1) clockwise and toward the center of the low
(2) clockwise and away from the center of the low
(3) counterclockwise and toward the center of the low
(4) counterclockwise and away from the center of the low

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