منصة نجم ستيب STEP
أهم_القطع_باختبار_STEP_ل_شهر_أكتوبر.pdf
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منصة نجم ستيب STEP
شرايكم وش ناخذ كويز اليوم ؟ 🫣
الريدنق فاز بالتصويت 🥇
١٠ دقايق و نبدأ هنا بالقروب تجهزوو
١٠ دقايق و نبدأ هنا بالقروب تجهزوو
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قطعة / الوقود الأحفوري
Fossil fuels include coal, oil and natural gas, formed from the remains of plants and animals which lived millions of years ago and obtained energy originally from the Sun. At present they are our main energy source. Predictions vary as to how long they will last since this depends on what reserves are recoverable and on the future demands of a world population expected to increase from about 7,000 million in 2011 to at least 7,600 million by the year 2050. Some estimates say oil and gas will run low early in the present century but coal should last for 200 years or so.
(2) Burning fossil fuels in power stations and in cars pollutes the atmosphere with harmful gases such as carbon dioxide and sulfur dioxide. Carbon dioxide emission aggravates the greenhouse effect and increases global warming. It is not immediately feasible to prevent large amounts of carbon dioxide from entering the atmosphere, but less is produced by burning natural gas than by burning oil or coal; burning coal produces the most carbon dioxide for each unit of energy produced.
(3) When coal and oil are burned, they also produce sulfur dioxide which causes acid rain. The sulfur dioxide can be extracted from the waste gases so it does not enter the atmosphere or the sulfur can be removed from the fuel before combustion, but these are both costly and risky processes which increase the price of electricity produced using these measures.
Fossil fuels include coal, oil and natural gas, formed from the remains of plants and animals which lived millions of years ago and obtained energy originally from the Sun. At present they are our main energy source. Predictions vary as to how long they will last since this depends on what reserves are recoverable and on the future demands of a world population expected to increase from about 7,000 million in 2011 to at least 7,600 million by the year 2050. Some estimates say oil and gas will run low early in the present century but coal should last for 200 years or so.
(2) Burning fossil fuels in power stations and in cars pollutes the atmosphere with harmful gases such as carbon dioxide and sulfur dioxide. Carbon dioxide emission aggravates the greenhouse effect and increases global warming. It is not immediately feasible to prevent large amounts of carbon dioxide from entering the atmosphere, but less is produced by burning natural gas than by burning oil or coal; burning coal produces the most carbon dioxide for each unit of energy produced.
(3) When coal and oil are burned, they also produce sulfur dioxide which causes acid rain. The sulfur dioxide can be extracted from the waste gases so it does not enter the atmosphere or the sulfur can be removed from the fuel before combustion, but these are both costly and risky processes which increase the price of electricity produced using these measures.
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1- Why does the writer mention the example of the increasing world
population in the future?
population in the future?
Final Results
28%
A- to show why our main energy sources will last forever
29%
B- to show that electricity will become more expensive for people
23%
C- to show that oil and gas will be more important in the future
20%
D- to show how it will affect the amount of fossil fuels we use
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2- What important ideas does the writer mention about sulfur dioxide in Paragraph (3)?
Final Results
24%
A- It is produced by burning natural gas.
23%
B- It is produced when cars pollute the atmosphere.
31%
C- It is dangerous and expensive to remove from fuel.
23%
D- It can aggravate the greenhouse effect and increase global warming.
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1- What was the cost of hurricane damage in 1928?
Final Results
15%
A- $53.80 billion
19%
B- $91.80 billion
7%
C- $77.90 billion
59%
D- $97.70 billion
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2- In which year was the cost of hurricane damage the highest ?
Final Results
73%
A) 2017
14%
B) 1970
8%
C) 1945
5%
D) 1983
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قطعة / النوم
It's not surprising that getting more done starts with a good night's
sleep, but it turns out getting too many hours is as bad as too few.
Analyzing the sleep and work habits of 3.760 people over seven
years, researchers at the Finnish Institute of Occupational Health
found that under-sleepers and over-sleepers were both more likely
to take extra sick days.
It's not surprising that getting more done starts with a good night's
sleep, but it turns out getting too many hours is as bad as too few.
Analyzing the sleep and work habits of 3.760 people over seven
years, researchers at the Finnish Institute of Occupational Health
found that under-sleepers and over-sleepers were both more likely
to take extra sick days.
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1- Which group has the lowest number of days a year?
Final Results
23%
A- Men who sleep between 7 and 8 hours
17%
B- Women who sleep between 7 and 8 hours
35%
C- Men and women who do NOT stay up late .
25%
D- Men and women who sleep at least 8 hours a day.
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2- Which groups have the most absences?
Final Results
43%
A) Men and women who sleep under 5 hours
15%
B- Men and women who sleep 10 hours
17%
C) Men and women who sleep 5 hours
24%
D- Men and women who sleep over 10 hours
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