HYDROLOGY AND HYDROLOGIC CYCLE

Question 1

The science which deals with the occurrence, circulation and distribution of water of the earth and earth’s atmosphere.

Answer 1

HYDROLOGY

Question 2

It refers to the downward entry of water into the soil.

Answer 2

INFILTRATION

Question 3

It is the portion of precipitation falling on an area that is rapidly discharged from the area through stream channels.

Answer 3

RUN-OFF

Question 4

It is the link between energy and water

Answer 4

EVAPORATION

Question 5

It is a result of the absorption and re- emission of energy by atmospheric gases.

Answer 5

Greenhouse effect

Question 6

It refers to a method by which we can account for the hydrologic cycle of a specific area.

Answer 6

WATER BALANCE

Question 7

It is the primary form of atmospheric moisture.

Answer 7

WATER VAPOR

Question 8

It describes the various ways in which the water supply is expended

Question 9

It estimates the amount of water in each component of the water cycle.

Answer 9

WATER BUDGET

Question 10

The hydrological cycle is known to be a good example of a

Answer 10

CLOSED SYSTEM

Question 11

lake had a water surface elevation of 109.3 m above datum at the beginning of the month. At the same month, lake received an average inflow of 6 m³/s from surface runoff sources. For the same period, the outflow from the lake had an average value of 6.5 m³/s. Further, in the same month the lake received a rainfall of 145 mm and losses due to evaporation of 6.1 cm. Assume the area of the lake is 5000 ha. and assume no contribution from the ground water storage. What is the water surface elevation of the lake after the month?

Answer 11

inflows - out flows divided by area for q
precipitation (inflows)
evaporation (outflows)
inflows-outflows * 36000* 24* 30
P-Q-E= DELTA S

Question 12

Enumerate the five (5) water budget major output sources.

Answer 12

EVAPORATION
EVAPOTRANSPIRATION
SUBLIMATION
INTERCEPTION
TRANSPIRATION