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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean earth science society
Journal Basic Information
Journal DOI :
The Korean Earth Science Society
Editor in Chief :
Volume & Issues
Volume 19, Issue 6 - 00 1998
Volume 19, Issue 5 - 00 1998
Volume 19, Issue 4 - 00 1998
Volume 19, Issue 3 - 00 1998
Volume 19, Issue 2 - 00 1998
Volume 19, Issue 1 - 00 1998
Selecting the target year
A Difference of Thinking Process Between Expert and Novice in Solving Problems on Earth Science
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 357~357
This study intended to find the differences between expert's and novice's thinking processes when they solve Earth Science Problems. Randomly chosen 12 subjects were made to solve 20 the earth science problems, and among them 6 were successful and 6 failed in solving the problems. The process of their solving the problems were recorded and written into 240 protocols by using the 'Thinking Aloud Method'. The protocols were analyzed according to their concrete behaviors and steps taken in solving the problems, and some characteristics of the 12 subjects' problem-solving abilities are gained. The summary of the characteristics is following: The majority of the concrete behaviors from the unsuccessful testees are `drawing specific information', `reading the original text , finding the relations among the conditions , `finding principles and laws to be applied, `finding the amount which can be induced from the conditions ,approximately calculating the answers , and 'removing the unnecessary amount by using subsidiary formula'. Contrastingly this study shows that some behavior characteristics the successful testees used less than the unsuccessful ones are `drawing an specific information, `finding the amount which can be induced from the conditions', `finding principles and laws to be applied, `finding the relations among the conditions . The above mentioned behavior characteristics can be considered as `cause of failure in the problem solving. Both the successful and unsuccessful testees commonly took two steps in solving them, but the more successfully they used three or four more steps, the less successfully they used fewer steps. It shows that the number of the steps taken in solving the problem is greatly related to the success and failure, and it can be called 'determinant cause' in earth science problem solving. I think it's essential that the strategy of earth science teaching method and a consequent assessment should be developed by considering the cause of failure, `determinant cause' from this study.
The Orientation of the Science Education in Regard to Level-Specific Curriculum and Open Education
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 368~368
It was reported that the 7th Curriculum is aimed at the level-specific curriculum. But in schools, the requirement of level-specific curriculum and open education from the year 1996 produce the confusion of the terminology and the difficulty in adoption, though it was planned to adopt year by year since 2000. And each subject faces, difficulties in the course of connection to each other. Therefore, this thesis primarily concerns the relations between the science education, Open education and level-specific education. The conclusion is that the aim which science education pursues is not alienated from the contents which Open education supports. And the science education should keep the root of traditional teaching-learning, trying to relate level-specific curriculum and Open education, and let the 2nd wave of science education proceed.
The Influence of Science Process Skills and Concepts Understanding on the Earth Science Problem Solving
Lee, Hang-Ro ; Jeong, Jin-U ;
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 375~375
While the general science process skills mean the content-free ability, the science process skills in the Earth Science Problem consist of items that can be solved by applying the science process skills as well as the science concepts. By analyzing the protocol used, in order to explain what science process skills and concepts play roles in the process of the earth science problem solving, the types of problem solving were classified into two groups by the earth science process skills and concepts: those who succeeded and those who failed. The gaps among them were also explained. In addition, to explain the correlations among the earth science process skills, the earth science problem solving abilities and the earth science concepts achievements, this study intended to provide the basic materials on the alternative assessment by the findings, which are, the degrees of the effects on the earth science problem solving ability using the correlation analysis and regression analysis. The summary of the results on this study is as follows: First, the types of problem solving were divided into 9 types by the criterion of the earth science process skills and concepts. Second, the representative types of problem solving which the success and the failure were four respectively. While three types were different between success and failure, and one type was same. Third, a coefficient of correlation between the achievement of earth science problems and earth science process skills was 0.53 which is within the significant level of 0.05, while between the achievement of earth science problems and earth science concepts it was 0.68. It is essential to find to what degree either of the elements can explain the achievement of solving earth science problems well when earth science process skills interact with earth science concepts. As the result, the regression equation was acquired: E=-1.41+0.13D+0.47C (E: the achievement of earth science problems, D: the achievement of earth science process skills, C: the achievement of earth science concepts). As shown above, the system of process centered alternative assessment which can evaluate step by step in accordance to the types of problem solving process is needed to evaluate who is a success and a failure of earth science problem solving more properly.
The Effects of the PEOD Model on the Science Achievement and Inquiry Abilities
Kim, Sang-Dal ; Park, Su-Gyeong ;
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 384~384
The purpose of this study is to identify the effects of the constructivist instructional model (PEOD model) on the science achievement and inquiry abilities. The model consists of 4 stages; prediction and explanation, experiment and observation, discussion, and application. In this study, the comparison group consisted of two classes of students who participated in the teacher-centered instruction. The experimental group consisted of two classes of students who participated in the constructivist instruction (PEOD model). The results of this study were as follows; First, The science achievement of experimental group was significantly higher than that of comparison group. There were no significant differences in inquiry abilities between experimental group and comparison group. Second, the science achievement of students of high inquiry abilities levels of experimental group were significantly higher than those students of comparison group. There were no significant differences in science achievement between students of low inquiry abilities level of experimental group and those students of comparison group. Third, the scores of experimental group were meaningfully higher than the that of comparison group in the high cognitive level item, but there were no significant differences in the scores of the low cognitive level item between experimental group and comparison group.
AXITRAOBS-modified Version of AXITRA for Ocean Bottom Seismogram
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 393~393
For the interpretation of the data recorded by ocean bottom seismometer (OBS), we modified the program of reflectivity modeling, AXITRA to AXITRAOBS which is extended to the case where a stratified fluid layer overlies an solid crust. The synthetics of the high amplitude of Moho reflection (PmP) show good agreement with the OBS data at the Ulleung Basin, southwestern East Sea.
Topographical Analysis on the Natural Landscapes of Sobaeksan Area, National Park
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 398~398
The Sobaeksan area has been designated as the 18th National Park in 1987. The Birobong is in the center of the area which consists of Guckmangbong, Hyungjaebong, Sinsunbong and the First and Second Yunhwabong. A topography of the area is mature stage in geomorphic cycle and the mountain range is relatively high. The south-east mountain slope of range is steeper than that of north-west. A geology of this area is mainly composed of the metamorphic rocks of the Sobaeksan gneiss complex which consists of porphyroblastic gneiss, biotitic granite gneiss and migmatitic gneiss. The representatives, for the natural landscapes of the Sobaeksan National Park, are curious rocks and rock cliff of the mountain range as well as river landscapes and water fall of the valley.
Volcanic Activity and Petrology of the Cretaceous Volcanic Complexes in Yuchon Volcanic Field of Southeastern Korea
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 408~408
The Mts. Sinbul, Wonhyo and Daeun volcanic complexes in southeastern Yuchon volcanic field are composed of lower andesitic lava flows and upper dacitic to rhyodacitic ash-flow tuffs with thin deposits of interlayered fallout deposits. The total thickness of volcanic sequence is about 1,000 m in thickness. According to Nb/Y vs. Zr/Ti02 diagram, the volcanic rocks belong to subalkaline basaltic andesite and andesite, and dacite/rhyodacite. The lower andesitic rocks belong to medium-K calc-alkalic rocks and upper dacite/rhyodacitic rocks belong to high-K, calc-alkalic rocks. The trace element composition and REE patterns of volcanic rocks, which are characterized by a high LILE/ HFSE ratio and enrichment in LREE, suggest that they are typical of continental margin-arc calc-alkalic volcanic rocks produced in the subduction environment. The whole rock chemistry and Sr isotopic compositions of the volcanic rocks suggest that the basaltic andesite was evolved mainly by fractional crystallization from the basaltic primary magma which was produced by partial melting of the mantle wedge. The dacite/rhyodacitic magma was mostly produced by fractional crystallization from the andesitic magma, but it might have partly undergone crustal assimilation during the fractional crystallization. The K-Ar data of two andesitic lava flow yield late Cretaceous ages (69.6±3.4, 65.9±3.2 Ma). The Mt. Daeun volcanic complex, measured about 15 ㎞ in diameter is a Vanes-type resurgent cauldron which shows concentric arrangement of rock units composed of central pluton (fine grained biotite granite), intracaldera volcanic rocks (minor andesite and mainly rhyodacite ash- flow tuff) and marginal cone sheet (rhyodacite) and ring intrusions (granitic rocks). In the central part, the resurgent magma was emplaced as fine grained biotite granite stock that formed the central dome about 3 ㎞ across.
Geochemistry and Au Mineralization of the Grantic Rocks around the Beonam-Palgong Mine Areas
Park, Cheon-Yeong ; Park, Yeong-Seok ;
Journal of the Korean earth science society, volume 19, issue 4, 1998, Pages 425~425
Geochemical characteristics and primary dispersion patterns of gold and associated elements were investigated in order to find out their potentiality as indicator elements in the granitic rocks from the Beonam and Palgong mine areas. Gold contents have been determined on twenty seven granitic rocks from the mine area. The resuls are as follows: (1) for the granites of Beonam mine. The Au contents range from 24 to 1462 ppb, with an average of 250 ppb: (2) for the Palgong diorites, the Au content is 16.4-347 ppb, with the average of 118 ppb. The gold content of the Beonam and Palgong granitic rocks tends to increase from mafic rocks to felsic rocks. Gold content shows positive correlations with Ni and Ag in Beonam granite and with Co, Cu and Mo in Palgong diorite. The Au is enriched in Beonam granite and depleted in Palgong diorite. The ratios of K₂O/(K₂O+Na₂O), K₂O/(K₂O+Na₂O+CaO), Rb/Sr, Ni/Co, Rb/K₂O and Sr/CaO are an important indicator to interpret the degree of alteration of the granitic rocks in the Beonam and Palgong mine. Enrichments of Fe₂O₃, Zn, Cu and F and depletions of Pb, Co, Ba and K₂O are found in the granitic rocks in the Beonam and Palgong mine area.