Monday, April 25, 2011

Reflection 3

My teacher Hedley told me to write more than 5 essays. The last 3 essays were about world population,hurricanes and tornadoes, UK budget . One of them should contain four paragraphs, and the other two have three paragraphs. The essay which has 4 paragraphs must contain at least 250 words, and the other two must contain at least 150 words. In the problem/solution conclusion it is important to choose the most viable solution. This is preparation for the argument essays we will do next.

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.
Cape Town has lowest temperature in July. In fact Cairo and Cape Town are almost opposites in temperature. Cairo is hottest when Cape Town is coldest. Its maximum temperature is 70º F from November to February, after which it drops gradually to about 55 degrees in its winter. The hottest place shown on the graph is Cairo. In July and August, average temperatures rise to over 80º Fahrenheit. 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

world population

The chart show’s population growth in richer and poorer countries between 1750 and 2150.

In 1750 the population of the world was less than 0.5 billion. There was about the same amount of population from 1750 to 1850. In 1900 the amount rose up to 1 billion. The population was estimated to be around 2 billion in 1950. From 1950 to 2000 the population increased three times to 6.2 billion. The chart shows that population will be around 10 billion in 2050. In 2100 the population is expected to be 10,5 billion and the population will increase slowly up to 1 billion in 2150.

The graph shows that population tripled between 1950 and 2000. Before that world population growth was steady rather than dramatic.

Wednesday, April 6, 2011

Hurricanes and tornadoes

Hurricanes and tornadoes are two strong winds. Below is a table about the differences and similarities between hurricanes and tornadoes.
A hurricane can be predict 2-3 days in advance for a wide area and 6-10 hours beforehand, but a tornado can be predicted 20 minutes or less. The minimum wind speed for tornadoes it is 40 miles per hour, whereas hurricanes is 74 miles per hour. Hurricane has 300 miles of average width of storm and tornado has 100-600 meters sometimes up to 1.5 km wide. Hurricanes start over warm oceans whereas tornadoes start usually over land. The hurricane is classified on the Saffir-Simpson C1-c5, but the tornado is classified on the Fujita F0-F5. Finally, the average number per year for hurricanes is 100 worldwide and 20 minutes or less for tornadoes.

All in all, a tornado is a dangerous, rotating column of air which is in contact with both the surface of the earth and a cloud. Hurricanes can produce large waves and storm.