Quiz #2: Overview of ArcGIS

1. Rank order the ten most populous countries of the world. [6 points]
China
India
U.S.
Indonesia
Russia
Brazil
Pakistan
Japan
Bangladesh
Nigeria

2. How many rivers does the Amazon river system consist of? [6 points]
There are 15 rivers within the Amazon River system including:
Amazon
Guapore
Japura
Madeira
Madre de Dios
Purus
Putamayo
Rio Branco
Rio Juruena
Rio Maranon
Rio Negro
Rio Teles Pires
Tapajos
Ucayali
Xingu

3. How many cities are within 500km of the Amu Darya and Syr Darya rivers? Attach a screen shot of a table for these cities. [8 points]
There are 52 out of 2533 cities within 500km of the rivers.

4. To the nearest 100,000 what is the total population of countries within 300 kilometers of Iran (not including Iran)? [8 points]
When I used Select by location and pressed “OK” I reached the following results: Within 300 km of Iran, there are 48 countries. The total population of all of these cities, excluding Iran totals: 3,356,737,001. Rounded to the nearest 100,000, the population of these 48 nations is 3,356,700,000.

However, when I selected “Apply” rather than “OK,” ArcGIS gave me the total of 452,297,220 as the sum of these countries’ populations. Rounded, the population would total 452,300,000.

5. Identify the most and least populous countries of the landlocked countries of the world. [6 points]
The most populous landlocked country is Ethiopia with a population of 53,142,970. The least populous landlocked country is Vatican City, with a population of 860.

6. Identify all countries within 300 kilometers of Veszprem, Hungary (not including Hungary). [10 points]
Excluding Hungary, there are 9 countries within 300 km of Veszprem, Hungary. These countries include:
Poland
Czech Republic
Slovakia
Austria
Slovenia
Romania
Croatia
Bosnia & Herzegovina
Yugoslavia

7. What countries border Chad? [8 points]
Niger
Libya
Sudan
Central African Republic
Cameroon
Nigeria

8. Rank order of the five countries that have the most cities based upon the data. And what is the city number for each? [10 points]
To find the countries with the highest number of cities I used: Analysis Tools > Statistics > Frequency. I input the cities layer and CNTRY_NAME as the target layer. From this, the countries with the highest number cities resulted:

Russia – 97
United States – 93
Thailand – 72
Turkey – 67
Cote d’Ivory & Poland (tie) – 50

Part II [38 points + 5 bonus points]

9. Approximate the total length (km) of all river portions /segments flowing in the country of Sudan? [8 points]
The approximate total length of all river portions in the country of Sudan is about 6,500 km.

10. Rank order of the five countries that have the most lakes in terms of number. And what is the lake number for each of the five countries? [10 points]
In order to find the top five countries with the most lakes in terms of number, I utilized the Frequency Tool as I did to find the highest number of cities by country. The five countries with most number of lakes are as follows:

Russia, 1516 lakes
Canada, 1340 lakes
United States, 743 lakes
China, 219 lakes
Sweden, 168 lakes

11. Rank order of the five countries that have the most lakes in terms of area. And what is the total lake area (square km) for each of the five countries? [10 points]
Canada: 443,517 sq. km.
United States: 196,849 sq.km.
Russia: 138,251 sq. km.
Kazakhstan: 70,900 sq. km
United Republic of Tanzania: 53,530 sq. km

In order to find this, I used the Geoprocessing Dissolve tool and added a field (in sq. km). I input the Lakes layer and dissolved the Lakes and Country Name columns, and ordered them by area (in km^2). The tool dissolved the Lakes and Country Name tables and ranked the countries by highest area of lakes (in sq.km.).

12. Produce the following map: a world country map of lake area per capita (area of lake surface per person). [15 points]