CIVL3141CatchmentHydrology_PRACTICEMidSemesterExamQuestions.pdf

Identify the incorrect statement about catchments

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Identify the INCORRECT statement about catchments from the following list of statements. a. A catchment is defined in terms of a point that is typically called the catchment “outlet”. b. A catchment can include many smaller sub-catchments that transfer water to the catchment outlet during a rainstorm. c. Sub-catchment boundaries are used to separate areas with different soil types. d. Catchments can cross national boundaries. e. Topographic maps and digital elevation models (DEMs) are two of the main sources of data that are used in the engineering profession to help define catchment boundaries. 8. Identify the INCORRECT statement about precipitation from the following list of statements. a. Drizzle refers to light, uniform rainfall with drops of 0.1-0.5 mm in diameter. b. Rain refers to water drops large than 0.5 mm in diameter. c. ‘Light’ and ‘heavy’ rain refers to rainfall intensity and not to drop size . d. Snow is precipitation in the form of ice crystals. e. Hail is precipitation in the form of ice with a diameter greater than 2 mm. 9. Precipitation due to an advancing cold front is characterised by: a. low intensity, short duration storms. b. high intensity, short duration storms. c. low intensity, long duration storms. d. high intensity, long duration storms.
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