LEC 7

Question 1

part of Eath’s natural hydrologic cycle

Answer 1

floods

Question 2

when the hydrologic cycle gets out of balance, it sends more water to an area than it can normally handle resulting to__

Answer 2

flood

Question 3

inundates a floodplain

Answer 3

flood

Question 4

the ____ is partly attributed to its geographical attributes

Answer 4

perrenial flooding

Question 5

around ___ principal rover basin across the country

Answer 5

421

Question 6

an average of __ typhoons enter the country annually

Answer 6

20

Question 7

Total of ____ ha of land nationwide are subject to flooding

Answer 7

1,316,230

Question 8

32% of flooding is in __ alone

Answer 8

central luzon

Question 9

major categories of flood

Answer 9

riverine flooding
coastal flooding
shallow flooding

Question 10

flooding that occurs along a channel is called ____

Answer 10

riverine flooding

Question 11

a severe storm that drops much rainfall in a short time can generate ____

Answer 11

flash flood

Question 12

changes the shape of channesl

Answer 12

erosion

Question 13

a curve in a channel

Answer 13

meander

Question 14

can undercut structures

Answer 14

riverine erosion

Question 15

typhoons and severe storms cause most __

Answer 15

coastal flooding

Question 16

persistent high wind and changes in air pressure push water toward the shore causing a ____ which can raise the level of a large body pf water by several feet

Answer 16

storm surge

Question 17

occurs in flat areas where a lack of channels means water cannot drain away easily

Answer 17

shallow flooding

Question 18

shallow flood problems include:

Answer 18

sheet flow
ponding
urban drainage

Question 19

special flood hazards (CUDIM)

Answer 19

closed basin lakes
uncertain flow paths
dam breaks
ice jams
mudflows

Question 20

It alters the floodplain and the dynamics of flooding

Answer 20

development

Question 21

buildings and infrastructure are damaged by ___

Answer 21

periodic flooding

Question 22

Human development can have an adverse impact on floods and floodplains.

Answer 22

riverine floodplain
watersheds
coasts

Question 23

main causes of flood damage: (HDHSS)

Answer 23

Hydrodynamic forces
debris impact
hydrostatic forces
soaking
sediment and contaminants