geo exams

Question 1

when does flooding occur

Answer 1

when inputs is more than the outputs

Question 4

where does overland sheet flow primarily occur

Answer 4

This normmally occurs in areas where the storgae is exhausted

urban construction sites and rural dirt roads, where vegetation has been stripped away, exposing bare dirt

Question 5

how are river flows influenced

Answer 5

by the terrain and vegetation

Question 6

what does a hyrograph show

Answer 6

A hydrograph shows how a river is affected by a storm. This helps to understand discharge patterns of a particular drainage basin and helps to predict flooding and plan flood prevention measures.

Question 7

what do urban areas have

Answer 7

Impermeable roads, footpaths, roofs
= zero infiltration and 100% runoff

Question 8

what have all regions in the uk experienced in the past 45 years

Answer 8

All regions of the UK have experienced an increase over the past 45 years in the contribution to winter rainfall from heavy precipitation events.
UKCIP2009.

Question 9

what happened in winter 2013/14

Answer 9

In winter 2013/14 a succession of storms hit the UK leading to record rainfall and flooding in many regions including south east England. In the Thames river valley there was widespread flooding, with clean-up costs of over £1 billion

extreme weather events such as hurricane Harvey.

Question 10

what is the most expensive natural disaster in austrilaa
how much did they cost the economy

Answer 10

“Floods are the most expensive type of natural disaster in Australia. The 2011 flood is estimated to have cost the Australian economy around A$30 billion

Question 11

what progress has been made to take the human pollution within rivers

Question 12

when did australis worst ever floods struck Queensland

Answer 12

ecember and January and at one stage swamped an area the size of France and Germany combined. But Grantham, 100km (60 miles) west of Brisbane, was its epicentre”

Question 13

what 3 things alter river pollution

Answer 13

sew pollution agriculture mining urbanisation

Question 14

what is one of the most polluted rivers in teh world

Answer 14

The ganges one of the most polluted rivers in the world
Geogrpahical in india 3 million liters of sewage is empitied in to it everyday

Question 15

what is a drainage basin defined as

Answer 15

Drainage basins are the area of land that is drained by a river.
Drainage basins can be made up of a series of catchments, containing smaller rivers or tributaries, which feed into an overall drainage basin.

Question 16

what human impacts drained basins

Answer 16

Drainge areas can be altered by human behavior deofrestation.
Catchmnet are can infuence the discharge and the number of tributarie rivers

Question 17

what reading is this information got from

Answer 17

Fundementals of fluvial geomorphology

Question 18

what do the worlds largest cities do

Answer 18

• increased industrialisation and urbanisation place growing demands on water supply systems. The world’s largest cities consume water at a rate that is exceeded only by the flow of a few major rivers

Question 19

what is channelisation

Answer 19

s the modification of natural river channels for the purposes of navigation, flood control, land drainage and erosion control (Brookes, 1988).