The table compares two of the most dangerous natural meteorological phenomena - tornadoes and hurricanes. Although both are extremely destructive, hurricanes can be predicted and action taken to avoid loss of life, while tornadoes can strike with very little warning.
Hurricanes differ from tornadoes in many respects. One difference is speed. To be classified as a hurricane, a storm must be between 74 mph and 200. Tornadoes however can be both much weaker, at 40 mph, and much stronger, at 300 mph. Hurricanes are much bigger in scale than tornadoes. They can affect an area of 300 miles, compared to only a few hundred meters for tornadoes.
Fortunately, hurricanes are much less frequent than tornadoes, with only 100 worldwide per year, compared to over 1000 tornadoes annually in the USA alone. In addition, hurricanes can be predicted with some accuracy up to 6-10 hours before they hit. Because of these differences, tornadoes and hurricanes are measured on different scales. Scientists measure hurricanes on the Saffir Simpson scale from C1 to C5, while tornadoes are measured on the Fujita scale.
In conclusion, the table shows that, despite the differences between the two types of storm, scientists are gradually learning more about each. If their efforts at prediction become even more successful, many tragedies caused by these overwhelming powers of nature could be avoided.
Sunday, February 28, 2010
Monday, February 22, 2010
Adding information
Additional information
moreover (formal); furthermore; in addition; on top of that
The Prime Minister is unwilling to admit that the country is deeply in debt. Moreover/Furthermore/In addition he insists he can maintain current levels of government spending.
The earthquake victims in Haiti are desperately short of food and shelter. In addition they urgently need doctors and medical supplies.
She borrowed my bike and never gave it back. On top of that, she broke the lawnmower and wrecked the washing machine.
moreover (formal); furthermore; in addition; on top of that
The Prime Minister is unwilling to admit that the country is deeply in debt. Moreover/Furthermore/In addition he insists he can maintain current levels of government spending.
The earthquake victims in Haiti are desperately short of food and shelter. In addition they urgently need doctors and medical supplies.
She borrowed my bike and never gave it back. On top of that, she broke the lawnmower and wrecked the washing machine.
Similarity
Expressing similarity
similarly; in the same way
The roads are usually very crowded at the beginning of the holiday season. Similarly, there are often traffic jams at the end of the holidays.
We did everything to provide our daughters with a good education. In the same way, they put a high value on our grandchildren's education.
similarly; in the same way
The roads are usually very crowded at the beginning of the holiday season. Similarly, there are often traffic jams at the end of the holidays.
We did everything to provide our daughters with a good education. In the same way, they put a high value on our grandchildren's education.
Emphasising a contrast
Stronger contrast
however; nevertheless; mind you; still; yet; in spite of this
Britain came last in the World Children's Games again. However, we did have one success with Annie Smith's world record in the egg and spoon race.
I don't like the job much. Mind you, the money's good.
He says he's not rich and yet he owns 3 houses and 4 cars.
It was foggy this morning. In spite of this, I managed toget to college on time.
It was foggy earlier but I still managed to get here on time.
however; nevertheless; mind you; still; yet; in spite of this
Britain came last in the World Children's Games again. However, we did have one success with Annie Smith's world record in the egg and spoon race.
I don't like the job much. Mind you, the money's good.
He says he's not rich and yet he owns 3 houses and 4 cars.
It was foggy this morning. In spite of this, I managed toget to college on time.
It was foggy earlier but I still managed to get here on time.
Contrast
Balancing contrasting points
on the other hand; while; whereas
Arranged marriages are common in many Middle Eastern countries. In the West, on the other hand, they are unusual.
I like spending my holidays in the mountains, while/whereas my wife prefers the seaside.
While/whereas can be put before the first of 2 contrasting points,e.g.
While/whereas the English alphabet has 26 letters, English phonemic transcription has over 40 basic symbols.
on the other hand; while; whereas
Arranged marriages are common in many Middle Eastern countries. In the West, on the other hand, they are unusual.
I like spending my holidays in the mountains, while/whereas my wife prefers the seaside.
While/whereas can be put before the first of 2 contrasting points,e.g.
While/whereas the English alphabet has 26 letters, English phonemic transcription has over 40 basic symbols.
Colours
The red traffic light means stop.
All the local men wear white dishdashas.
Sheikh Zayed wanted to change the UAE from a desert to a green paradise.
In the fall/autumn all the leaves are brown.
He gave her a black look.
There were grey clouds in the sky and it looked like it was going to rain.
Roses are red, violets are blue, sugar is sweet and so are you.
Orange juice is full of vitamin C.
Egg yolks and lemons are yellow.
Blue for a boy, pink for a girl.
She chose beige coloured furniture.
She was wearing a purple dress.
All the local men wear white dishdashas.
Sheikh Zayed wanted to change the UAE from a desert to a green paradise.
In the fall/autumn all the leaves are brown.
He gave her a black look.
There were grey clouds in the sky and it looked like it was going to rain.
Roses are red, violets are blue, sugar is sweet and so are you.
Orange juice is full of vitamin C.
Egg yolks and lemons are yellow.
Blue for a boy, pink for a girl.
She chose beige coloured furniture.
She was wearing a purple dress.
Around the College
We are all students at Abu Dhabi Men's College.
We have to be in the classroom on time.
Physics and chemistry lessons take place in a laboratory.
There are no healthy food outlets in our canteen/cafeteria.
I read books and magazines and also do IELTS practice in our college library, which is large and well-stocked.
Student services organise activities for us.
The academic office performs many administrative tasks, such as issuing ID cards and arranging exam schedules.
There is a special learning centre in our library, called the Active Learning Zone, to provide students with extra help with their English.
Conferences and large meetings are often held in the college auditorium, which is also where we do our progress tests.
We have to be in the classroom on time.
Physics and chemistry lessons take place in a laboratory.
There are no healthy food outlets in our canteen/cafeteria.
I read books and magazines and also do IELTS practice in our college library, which is large and well-stocked.
Student services organise activities for us.
The academic office performs many administrative tasks, such as issuing ID cards and arranging exam schedules.
There is a special learning centre in our library, called the Active Learning Zone, to provide students with extra help with their English.
Conferences and large meetings are often held in the college auditorium, which is also where we do our progress tests.
Sunday, February 7, 2010
Group Of Cars
The table compares four small cars on the basis of their price, engine size and fuel consumption. Overall, the biggest car, the VW Golf, is the most expensive and has the lowest fuel efficiency.
Cost is an important factor in buying a car. The most expensive car in the group was the VW Golf, at over $18,000. This was three thousand dollars more expensive than the other three cars, which all cost between $15,000 and $15,800. The German Volkswagen also had the biggest engine size. It had a 1600cc engine. In contrast, the cheapest car in the group, the Nissan Micra, had the smallest engine, at only 1200cc.
Fuel economy is also a significant factor to consider before buying a car. The cheapest car in the group, the Nissan Micra, had the lowest fuel consumption, at 52 miles per gallon. However, the Volkswagen Golf had the worst fuel consumption, at only 40 miles per gallon. This was due to its larger engine size.
In conclusion, the bigger the car, the more expensive it is and the lower the fuel efficiency. Customers have to choose carefully between power, features and cost before making their dream purchase!
Cost is an important factor in buying a car. The most expensive car in the group was the VW Golf, at over $18,000. This was three thousand dollars more expensive than the other three cars, which all cost between $15,000 and $15,800. The German Volkswagen also had the biggest engine size. It had a 1600cc engine. In contrast, the cheapest car in the group, the Nissan Micra, had the smallest engine, at only 1200cc.
Fuel economy is also a significant factor to consider before buying a car. The cheapest car in the group, the Nissan Micra, had the lowest fuel consumption, at 52 miles per gallon. However, the Volkswagen Golf had the worst fuel consumption, at only 40 miles per gallon. This was due to its larger engine size.
In conclusion, the bigger the car, the more expensive it is and the lower the fuel efficiency. Customers have to choose carefully between power, features and cost before making their dream purchase!
Saturday, February 6, 2010
Top Ten Date-Producing countries,2001
The bar graph shows date production in tonnes for the world's top producers in 2001.Ten countries in the Gulf region and northern Africa are featured. Overall, Egypt and Iran account for the majority of goods whilst Sudan and Libya are in the minority.
First, Egypt took the lion's share of production with over a million tonnes but Iran was a close second with almost .9 million. Following them came the UAE and Saudi Arabia, rivalling each other with about 740,000 tonnes each. Pakistan and Iraq, with outputs of approximately 630,000, were not far behind. The remaining/rest of the nations, however, was far less productive. Algeria supplied the world with nearly 400,000 tonnes and Oman around a quarter million. Finally, Sudan’s and Libya's crops yielded under 0.2 million each.
In summary, date production is the most abundant in Egypt and Iran. In contrast, harvests in Oman and countries in northern Africa are far less plentiful.
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