경희대학교 수시 논술고사 문제(자연계)

< 문 제 >

  다음 제시문 [A], [B], [C]는 어떤 과학적 반응에 필요한 세 가지 요소에 대한 설명이다.

(a) 각 요소가 무엇인지를 밝히고,
(b) 세 가지 요소가 함께 작용하는 과학적 반응에 대하여 구체적으로 설명하고,
(c) 이 과학적 반응의 결과, 생성된 물질들을 제시하고,
(d) 생성된 각각의 물질들이 지구 생태계에 끼치는 영향에 대하여 논술하시오.

< 제시문 >
[A] This is a colorless, odorless gas occurring naturally in the atmosphere, and is a strong absorber of infrared radiation. It absorbs energy from sunlight and from the infrared radiation emitted by Earth's surface.  The absorption of energy serves to keep the temperature of the atmosphere at a life-sustaining level. This is mainly produced by combustion of fossil fuels. It is also released when forests are burned and when organic materials are degraded by bacteria.  It also comes out of breathing. Its mass of 50 mL is 0.088 g.  

[B] This is a colorless, transparent, odorless, tasteless compound which consists of two elements. This compound has an unusually high specific heat (4.184 J/g․K). This is an efficient cooling agent which melts and boils at temperatures of 0oC and 100oC, respectively. This is a life's most important solvent, since  biologically important ions and molecules are highly soluble in it. It has the largest surface tension of any common liquid. It is the only material which expands when it freezes.

[C] This is understood as electromagnetic wave, and is being widely used in modern communication system because of its speed. This is well known for its contradicting characteristics of wave and particle. It originates at the outer surface of the sun, in a region called the photosphere, where atoms, atomic ions, and electrons jostle about at 5800oC. Since these charged particles accelerate as they bounce around, they emit electromagnetic waves.

[주]
specific heat : 비열
solvent : 용매
surface tension : 표면장력

[유의사항]
1. 제목은 쓰지 말고 특별한 표시를 하지 마시오.
2. 제시문 속의 문장을 그대로 번역하여 쓰지 마시오.
3. 반드시 학교에서 지급된 흑색볼펜을 사용하시오.
4. 글 길이는 1300-1400자