Geo population and water

a census is a method used to acquire and record info on people

a census is a method used to acquire and record info on people

a questionnaire is the document that has a no. of questions on population characteristics

a enumerator is the person that uses the questionnaire

Advantages of Census method

- More accurate

-Generates more info

-Everyone is counted

Disadvantages of Census

-People may be counted twice

-Very expensive

-Language barriers

Vital Registration is when your registered at birth then again at death, used as a secondary source of population data

That info is available at District registry officers and also schools, hospitals, and social clubs

Advantages of Vital Registration

-Cheaper than census

-Not time consuming

Disadvantages of Vital Registration

- Might be distorted

-Not all records are accessible

-Some people may not be registered

-Registers might be outdated

Sample Surveys are when a small no. of people is taken and interviewed

The info obtained can represent a whole group

Advantages of Sample Surveys

-Cheaper

-Quicker

Disadvantages of Sample Surveys

-sample size can be too small

-might omit some important features

97% of water is salty sea water while only 3% is fresh water

Store

Glaciers and ice caps make up 75%

Ground water makes us 24.75%

Surface 0.25%

Conventional Rainfall

When the ground is heated water evaporates, warm moist air rises, expands, cools and condenses making clouds, this takes place in the afternoon and rains heavy but for little time.

Relief Rainfall

Warm moist air is forced to raise by physical barriers like mountains, after that it rises, expands, cools, condenses, clouds form and it rains.

Frontal

Warm air rises over cold dense air, expands, cools, and clouds form and it rains (frontal is the region where two air masses meet.