Population growth

This chart shows population growth in richer and poorer countries between 1750 and 2150.

In 1750 the world population was below 1 billion but in 1800 there was a slight increase in both developed and undeveloped countries. The growth in 2000 increased up to 6.1 billion but the increase was more dramatic in less developed countries than more developed countries. The population in more developed countries stayed the same from 2000 to 2010. Also they expect it to be the same from 2011 to 2150.Less developed countries saw a bigger increase from 2000 to 2010. The population growth is estimated to reach 11 billion in 2150. From 1950 to 2000 world population increased three times. The more developed countries had slight growth but were still below 1 billion.

All in all, I think less developed countries expect to be more than 10 billion population.

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Three African Cities

The line graph gives information about the average monthly temperatures in three African cities - Mombasa, Cairo, and Cape Town. Each city has its own different climate, with very different characteristics.

The hottest place shown on the graph is Cairo. In July and August, average temperatures rise to over 80º Fahrenheit. However, Cairo also has the biggest variation in climate.Temperatures drop to as low as 55 degrees in Cairo’s winter, during January and February. This is equal to Cape Town’s lowest temperature in July. In fact Cairo and Cape Town are almost opposites in temperature. Cairo is hottest when Cape Town is coldest.

Cape Town does not have the range that Cairo has. Its maximum temperature is 70º F from November to February, after which it drops gradually to about 55 degrees in its winter. In contrast to Cairo or Cape Town,

Mombasa is warm all year round. Its temperature fluctuates very little, ranging from a low of 75 to a maximum of 83 in March.

In conclusion, location is very important in deciding climate. When it is winter in Cairo, it is summer in Cape Town, but Mombasa, being tropical, is warm all year round.

196 words

Reflection 3

Mr. Hedley teaches me how to write essays about problems and solutions. First you must write the introduction then the first part of the body must be the causes of the problem then next will be the solutions. After than you must choose one solution that is more viable in the conclusion. Also Mr. Hedley teaches me how to write the bar and table chart. The introduction must be short and the body must include everything in it. The conclusion should highlight the most striking feature (s).   

Hurricanes and Tornadoes

This table shows the differences between two very strong winds: hurricanes and tornadoes.

The minimum wind speed of hurricanes is 74 mph but of tornadoes is 40 mph. However the maximum wind speed for hurricanes is from 155-200 mph but for tornadoes is higher. Hurricanes’ classification scale is the Saffir-Simpsoncl-C5 where as the tornadoes scale is the Fujita F0 –F5.However the hurricanes’ duration is 1 week on average but the tornadoes mostly only last a few minutes. The average width for hurricanes is 300 miles but tornadoes start from 100-600 meters, with some up to 1.5km wide. The hurricanes can be predicted 2-3 days for a wide area; whereas tornadoes can’t be predicted far in advance. Tornadoes start usually over land but hurricanes start over warm oceans.

All in all, I think that the tornadoes are much more dangerous than hurricanes and the maximum wind also for the tornadoes is higher than for hurricanes.

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