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한국지구과학회지 = Journal of the Korean Earth Science Society, v.37 no.1, 2016년, pp.62 - 77
전태환 (서울대학교 지구과학교육과) , 서기원 (서울대학교 지구과학교육과) , 이규호 (경인교육대학교 과학교육과)
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In the early model of plate tectonics, the plate was depicted as a passive raft floating on the convecting mantle and carried away by the mantle flow. At the same time, ridge push at spreading boundaries and drag force exerted by the mantle on the base of lithosphere were described as the dominant d...
| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| 판 구조론에서 지각 판은 어떻게 묘사되었는가? | 초기의 판 구조론에서 지각 판은 연약권 위에 떠서 맨틀의 움직임에 따라 움직이는 수동적인 모습으로 그려졌고, 자연히 해령에서 발산되는 힘이나 암석권 하부의 맨틀 견인력(drag force)이 판을 움직이는 주된 원동력으로 묘사되었다. 하지만 최근 여러 연구들은 판의 이동을 일으키는 원동력이 맨틀의 대류보다는 섭입대에서 침강하는 판이 만드는 섭입판 인력(slab pull)이라고 보고 있다. | |
| 최근 연구에서 지각 판의 이동을 일으키는 원동력이 무엇이라고 하였는가? | 초기의 판 구조론에서 지각 판은 연약권 위에 떠서 맨틀의 움직임에 따라 움직이는 수동적인 모습으로 그려졌고, 자연히 해령에서 발산되는 힘이나 암석권 하부의 맨틀 견인력(drag force)이 판을 움직이는 주된 원동력으로 묘사되었다. 하지만 최근 여러 연구들은 판의 이동을 일으키는 원동력이 맨틀의 대류보다는 섭입대에서 침강하는 판이 만드는 섭입판 인력(slab pull)이라고 보고 있다. 최근 학계는 무거운 해양판과 주변 연약권의 밀도 차이가 섭입판 인력의 핵심이라고 설명한다. | |
| 지구과학 과목 교육 내용의 정확성이 중요한 이유는? | 그 중에서도 교과서는 어떠한 자료보다도 절대적인 위치를 차지하는 핵심 교재로서, 우리나라 교육 환경에서는 그 역할이 더욱 중요하게 강조되고 있다(Park and Cho, 1986; Angus, 2004). 특히 지구과학 과목은 지질, 대기, 해양, 천문 등 폭 넓고도 독립적인 분야들을 포함하고 있는데다, 관찰이나 실험이 다른 분야와 달리 시간, 공간적으로 규모가 크기 때문에 현장에서 재현하기가 쉽지가 않다(Ault, 1998; Duschl and Smith, 2001). 때문에 지구과학 과목 교육은 높은 비율로 교과서의 내용과 도해, 개념에 의존하게 되어 내용의 정확성은 그 중요 도가 상대적으로 매우 높다고 할 수 있다. |
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