YÖKDİL İngilizce Fen Bilimleri Çıkmış Sorular Testi-7

1.-4. sorularda, cümleler sırasıyla okunduğunda parçanın anlam bütünlüğünü bozan cümleyi bulunuz.

1. (I) Primitive people long believed that volcanoes were inhabited by deities or demons that were highly temperamental, dangerous, and unpredictable. (II)James Hutton was in 1788 the first to attempt to explode the myth associated with natural disasters. (III) To please those kind of inconsistent characters, humans have for centuries made the ultimate sacrifice. (IV) There were also those who were skeptical of such rites, pointing out that earlier sacrifices had failed to prevent or stop an eruption.(V) However, the believers have countered with the argument that things would have been much worse without the sacrifice.

2. (I) Oceans appear blue from space for the same reason the sky appears blue: ocean waters absorb the other colours of the light spectrum while reflecting light in the blue part of the spectrum.(II)When ocean waters carry little organic matter, the colour is a deep blue. (III)Scientists benefit from a NASA satellite to gather data on global ocean bio-optical properties.(IV)If there are marine plants present, more blue light will be absorbed and more green light reflected, thus changing the ocean's colour.(V)For example, during hurricanes in the Atlantic Ocean, the blue waters mix with the stirred yellow plant pigments to form a green colour.

3. (I)DNA, the master molecule, is a natural polymer which encodes the genetic information required for the growth, development, and reproduction of an organism. (II)Defects in the DNA of just one gene can cause a genetic disorder which results in disease because the protein encoded by the defective gene is abnormal. (III) Found in all cells, it consists of chains of units called nucleotides. (IV) Each nucleotide unit contains three components: the sugar deoxyribose, a phosphate group, and a nitrogen-containing amine or base with a ring-type structure. (V) The base component can be any of four types: adenine, cytosine, guanine or thymine.

4. (I) The Moon has played a pivotal role in the development of life as well as human development. (II)In addition to the 24-hour rotation period of the Earth, which may be a direct consequence of lunar formation, ancient people could find their way at night thanks to the moonlight. (III)The Moon is a unique satellite in the Solar System, the largest relative to its planet. (IV)Moreover, lunar tidal effects may have been crucial in providing an environment for life to develop. (V) It is also possible that the Moon has stabilised the Earth, preventing large-scale excursions that might have had catastrophic effects on evolution.

5.-7. soruları aşağıda verilen parçaya göre cevaplayınız.

Whiteout is the condition in which the ground, air, and sky are all a uniform white and no landscape features are visible. Persons exposed to a whiteout lose their perception of depth and quickly become disoriented, so a whiteout is extremely dangerous. There are two ways in which a whiteout can occur. In calm weather, a uniformly white snow surface may lie beneath low cloud. The cloud diffuses light passing through it, so light falls on objects evenly from all sides and there are no shadows. Consequently, everything appears white. If dark objects are visible, they appear to float, and it is impossible to determine their distance. Whiteout can also occur in a blizzard. Again, the light is diffused by clouds, but in this case there are also snowflakes between the cloud base and the ground. The snowflakes are falling quickly and turning in all directions, reflecting light in all directions as they do so. A flashlight is useless in the second type of whiteout, because the light is scattered by the falling snowflakes.

5. It is clearly stated in the passage that in a whiteout,----.

6. According to the passage, there are two ways in which a whiteout occurs, and in both cases, ----.

7. What is the passage mainly about?

8.-10. soruları aşağıda verilen parçaya göre cevaplayınız.

The Florida manatee is a large marine mammal with a rounded, heavy grey body and a horizontally flattened tail. Native Americans hunted manatees for centuries, using their flesh for food, their bones for medicine, and their skin for leather. When Spanish explorers began colonising the Caribbean islands in the 16th century, manatee hunting increased. Biologists believe this hunting is responsible for the manatee’s initial decline. Natural events, such as sudden changes in water temperature, also can be deadly to manatees. In the 1980s, three abnormally cold winters in Florida lowered water temperatures throughout the state. In water below 15°C, manatees become lazy, stop eating, and eventually die. Many manatees perished during those cold Florida winters. The greatest continued threat to manatees, however, comes from humans. To fix this problem, in 1978, the Florida legislature passed the Florida Manatee Sanctuary Act, which designated the entire state a shelter and a protection area for the animal. In areas declared manatee shelters, no boats, swimmers, or divers are allowed. 

8. Which could be understood from the passage?

9. Which of the following is true about the Florida manatee?

10. What is the primary purpose of the author?