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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 25, Issue 8 - Dec 2004
Volume 25, Issue 7 - Oct 2004
Volume 25, Issue 6 - Aug 2004
Volume 25, Issue 5 - Jun 2004
Volume 25, Issue 4 - Apr 2004
Volume 25, Issue 3 - Mar 2004
Volume 25, Issue 2 - Feb 2004
Volume 25, Issue 1 - Jan 2004
Selecting the target year
Development and Application of an Instrument for Assessing Inquiry Level in Secondary School Science Laboratory Classrooms
Lee, Keun-June ; Jeong, Jin-Woo ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 507~518
The purpose of this study was to develop and validate an instrument for analysing secondary school science laboratory classroom. Three classroom of novice teachers were observed and administered Dana's (2001) situated laboratory activity instrument. Dana's situated laboratory activity instrument consists of eight categories. Each category includes four levels. Three doctoral students and two science education specialists participated in modification of the through 15 science education graduate students. To achieve reliability, the researcher and two raters observed and analyzed three videotaped classrooms through discussion. The finalized instrument was employed in four novice teacher' classes and result indicated the instrument to be useful in identifying the inquiry level of a secondary laboratory classroom. The inquiry level of four novice teachers was confirmation or observation.
High School Student Conception on the Motion of the Earth and Moon
Byun, Jae-Sung ; Moon, Byeong-Chan ; Jeong, Jin-Woo ; Jung, Jae-Gu ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 519~531
The purpose of this study was to ascertain high school student ideas on the motion of the Earth and moon by cognitive level. For this study, five students determined to be of high, middle and low cognitive level selected from 73 10th-grade students at a high school located in Suwon, Gyeonggido. The results of this study were as follows: first, students at the high cognitive level had comparatively more logical and scientific conception on the revolution and rotation of the Earth and moon. second, students at the middle cognitive level, generally had a passive learning attitude to unconditionally memorize learned contents, so they were apt to forget learned contents, also their recognized conception was not enlarged. In addition, they had native theories, intuitive ideas and misconceptions as well as made logical errors in the course of explanation for the motion of the Earth and moon. In the course of explanation for the phases of the moon and the cause of change of season, because of their scientific conception, the students made more and more errors in conception. finally students at the low cognitive level were not willing to think logically and positively and were very passive in the attitude to recognize conception. In addition, they have learned helplessness on the grounds that they have low scholastic achievement specially in science.
Tenth Graders' Ideas concerned with Earth's Rotation according to Interest and Learning style
Jeong, Jin-Woo ; Jung, Jae-Gu ; Moon, Sang-Yeon ; Moon, Byoung-Chan ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 532~544
The purpose of this study is to analyze the concept concerned with Earth's rotation as passed by tenth graders whose interest in earth's rotation and learning styles were varied. To examine student's interest in the Earth's rotation, 4students (visual-verbal learning style student with much interest, visual learning style student with much interest, visual learning style student with little interest, and verbal learning style student with little interest) were chosen for study. Personal interview was used for this study. To probe students' conception in varied ways, they were allowed to make gesture and draw pictures through data collection process, except for interviews. And the data were analyzed one by one. The result of this study were as follows: First, the student with much interest was faster to answer the questions about Earth's rotation than the one with little interest. Also he comprehended better and was able to explain reasons coherently. Second, there was little difference according to student's learning style. Third, one of the repeated misconception was direction. For thinking that is the right side is the east side, students have misconception that the sun goes from right to left and stars in north sky move clock-wise.
The Effect of Using Multimedia Material of Seasonal Change on Middle School Students' Conceptual Changes
Chung, Jung-In ; Shim, Ki-Chang ; Kim, Hee-Soo ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 545~557
The purpose of this study is to classify types of preconception on the seasonal change to middle school students and to find out how the developed multimedia material changes their conception in the seasonal change. The questionnaire about the variation of season consisted of 10 items. Questions are given to 80 ninth graders. Control and experimental group was 23 and 57 students, respectively and they were instructed for two class periods. A learning method using multimedia was applied to the experimental group. On the other hand, traditional teaching-learning method was used for the control group. A learning method using multimedia in this study had an effect on the conceptual changes (p$<$0.01). Data in this study was divided into six levels to classify the changes of concepts in detail. As a result, it showed that a learning method using multimedia was effective for students to make progress from unscientific to scientific concepts, to build up scientific concepts, to build up scientific concepts, and to elaborate scientific concepts as compared with traditional method.
A Comparative Study on the Connection between Elementary and Secondary Science Contents of DPRK and Republic of Korea
Jang, Moon-Soo ; Kwon, Chi-Soon ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 558~564
This research investigated the connection between science textbook contents in Democratic People's Republic of Korea (DPRK) and those in Republic of Korea (ROK). Both text books in the field of earth science were analyzed and classified into 70 categories based on the Third International Mathematics and Science Study (TIMSS). Comparison was specifically made between the elementary and middle school text books of both countries; the result are as follows: First, the scope and the level of the textbooks' contents are quite different between DPRK and ROK. Text books in the South are much limited in concepts and terms than those in the North. In contrast, textbooks in DPRK are written mainly to explain concepts. Second, there are many common contents of the textbooks in DPRK and Republic of Korea. The level and scope of the contents in Republic of Korea are more inquisitive, quantitative and detailed than those in DPRK. Third, we found content connections in science textbooks between primary and secondary schools in both countries: 27 items (38.5%) are related in ROK and 19 items (27.1%) in DPRK.
Effect of Instruction Utilizing History of Science on the Science Achievement and Attitude of Middle School Students: In the Chapter of 'Water Cycle and Weather Change
Lee, Hyun-Sun ; Yoo, Jung-Moon ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 565~575
The effects of education utilizing history of science on science achievement and attitudes of the ninth grade students were investigated according to their achievement level, along with the development of teaching and ;earning materials. A total of 144 ninth grade students were divided into the experiment and control group. Instructing students using history of science was performed in the experiment group, while conventional instruction was used in the control group. The scores of both pre-test and post-test were estimated by ANCOVA. Instructions applying history of science were more effective in increasing the students' science achievement and attitude than conventional instructions. In particular, the former enhanced the achievements of the upper-level students, more than it did for the middle and lower-level students. In addition, using history of science showed a better effect on higher and middle-level students, in improving their attitudes toward science, than it did for lower-level students. This study suggests that the instruction utilizing history of science should be designed based on the students' achievement level, and that various teaching and learning materials related to the instruction were helpful.
A Relationship Analysis of Terms and Inquiries in Ocean Unit of Science Textbooks Based on the Korean National Common Basic Curriculum
Koh, Yeong-Koo ; Youn, Seok-Tai ; Oh, Kang-Ho ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 576~585
This study was conducted to analyze the relationships between terms, learning concepts and inquiries in ocean unit, the National Common Basic Curriculum. The several science textbooks were selected to use for study, written in accordance with the 7 current national curriculum for the fourth grade of elementary school, the seventh of middle school and the tenth of high school. The higher the school level becomes, the frequencies of using terms related with ocean region get. The explanation of terms, however, has a tendency to be less frequent in the high school level. In the perspective of learning concept, there are more concrete concepts than formal concepts regardless of school level. Pure scientific context appears most often in inquiry contest through the whole course of every school level. In respect to inquiry process, the frequency of integrative inquiry process is on the increase as the school level gets higher. From the viewpoint of inquiry activity, there have been a lot of discussions, experiments and investigations in every school level, while high school does not the present any field study and project. Through these result, it is considered that the explanation of main terms is inevitable in the textbooks as basic educational material without regard to school level. In learning concept and inquiry context, a well-rounded learning is needed in relation to students' cognitive development and science-technology-society. Especially for the inquiry activity of earth science education, the educational effect is remarkable through field study; its appropriate application is required, accordingly.
An Analysis of Observations and Hypotheses of Elementary School Students on Sedimentary Rocks and Geological Structures in Field Courses
Seo, Dong-Wook ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 586~594
This study is the qualitative study in order to discover a direction of field courses by analyzing what elementary school students observe or hypothesis in field courses. The purpose of it is to find any relevancy between the observations and hypotheses generated. The result of the study were as follows; First, most participants have observed mostly based on their vision due to the characteristic of field courses, and the observations of sedimentary layers were mainly generated on the rocks while most hypotheses were on geological structures. Secondly, according to observational descriptions the frequency of the comparative observation was high as well as the cases when two different types of observations were joined together. The last conclusion from this investigation is, according to the standard of observational types, the hypotheses combined with the interpretive observation and comparative observation had the greatest percentage. This shows that many participants tried to rationalize their thoughts by interpreting geological structures and comparing them with other people's cases as well. Scientific explanatory hypotheses were mainly found according to the standard of hypothetical types, which can be constructed that those participants tried to explain and apply established knowledge and preconception.
The Effects of Instruction Material Using ICT at Elementary School Science
Lee, Yong-Seob ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 595~603
This study investigated the effects of the application of a variety of ICT (Information communication Technology) cause the effects on self-directed learning characteristics, creativity and science achievement. In order to achieve the above aim, WBI (Web-Based Instructions), instructions using CD-ROM Titles and Instruction Module Using ICT for the unit were applied and analyzed which belongs to the area of 'the earth' in the subject 'science' for Elementary school students. Instructions using WBI materials, CD-ROM titles and Instruction Module Using ICT were found to be effective on 'science achievement', 'self-directed learning characteristics' and 'creativity'. They show meaningful effect on improving 'science achievement', 'self-directed learning characteristics' and 'creativity'. WBI proved more fruitful than instruction using CO-ROM titles, Instruction Module Using ICT on improving self-directed learning characteristics. Instruction Module Using ICT proved more fruitful than instruction using CD-ROM title, WBI on improving creativity.
On the Temporal Variability of Geomagnetic Field and Transfer Function at Icheon Observatory
Lee, Duk-Kee ; Kwon, Byung-Doo ; Youn, Yong-Hoon ; Yang, Jun-Mo ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 604~614
Using three-components geomagnetic data from a permanent geomagnetic observatory in Icheon, we have computed the power spectrum of each geomagnetic component, amplitude, phase and estimation error of transfer function for each day in the 6 months period July 2002
December 2002. The temporal variation of power spectrum have random appearances with repeating relative strong and weak magnitude, which is considered as solar activities. However, there is no clear long-term trend. In the case of amplitude, phase and error of transfer function, even though there are some random patterns over the periods of 1000 s and under 100 s, they seem to be comparatively stable without manifest temporal changes. Futhermore, we have estimated electrical field by assuming P
spherical harmonics and then calculated the approximated apparent resistivity for each day. As a result, the variations of resistivity depend on the temporal magnitude of spectral power in horizontal magnetic fields rather than hydrological changes in near surface.
Seasonal Sedimentary Characteristics and Depositional Environments after the Construction of seawall on the Iwon Macrotidal Flat
Kum, Byung-Cheol ; Park, Eun-Young ; Lee, Hi-Il ; Oh, Jae-Kyung ; Shin, Dong-Hyeok ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 615~628
In order to elucidate seasonal sedimentary characteristics and depositional environment after construction of seawall on macrotidal flat, a seasonal observations of surface sediments (total 450) and sedimentation rates on 4 transects have been investigated for 2 years. The eastern area of Iwon tidal flat, has been changed from semi-closed coast to open coast by construction of seawall, shows general seasonal changes similar to characteristics of open coast type, which represented both fining and bad sorted distribution due to deposition of fine sediments under low energy condition in the summer, and relatively coarser and better sorted distribution because of erosion of fine sediments in the winter. In considering angles of transects, distribution patterns of surface sediments, the northern and southern parts of eastern tidal flat are dominantly influenced by wave and tidal effects, respectively. As time goes by, the eastern tidal flat shows coarsening-trend of surface sediments caused by direct effect of tidal current, were and typhoon. Meanwhile the western area of seawall, which has been re-formed by construction seawall, is sheltered from northwesterly seasonal wind. The seasonal change pattern of western area of seawall is slightly different from that of eastern tidal flat. Mean grain size and sorting of surface sediments during spring is finer and worse than those during summer. This seasonal change pattern maybe influenced by topographic effects caused from the construction of seawall. In consideration of all result, the transport of fine sediments in the study area, which is supplied to limited sediments, shows clockwise circulation pattern that fine sediments are transported from the eastern tidal flat to the western area of seawall because of blocking of seawall in the winter and are transported reversed direction the summer. As a result, many changes have been observed in the study area after construction of seawall; however, this change is still in progress and is expected to need continuous monitoring.
A Case Study on the Heat budget of the Marine Atmosphere Boundary Layer due to inflow of cloud on observation at Ulleungdo
Kim, Hee-Jong ; Yoon, Ill-Hee ; Kwon, Byung-Hyuk ;
Journal of the Korean earth science society, volume 25, issue 7, 2004, Pages 629~636
In order to study developments of the marine atmosphere boundary layer in cloud incoming, important parameters like heat advection, surface layer heat flux, and radiation energy were estimated using the rawinsonde, AWS data, satellite images, and buoy data which was installed at the East Sea. We explained the variation and the development of mixed layer in terms of surface layer heat flux and long wave radiation under the cloudy sky. The heat flux was obtained by means of the bulk method. Conservation of heat was analysed by heat budget equation, which was consist of buoy data in the East sea, and sounding data at Ulleungdo and at Pohang. During the inflow of cloud, radiative cooling at the surface after was suppressed and long wave radiation from cloud played a role of warming. The surface layer temperature was also remained warm by influence of warm advection from south-easterly direction. The air temperature in night was increased, as a result, mixed layer was not destroyed and The nocturnal boundary layer was composed of the mixed layer and the residual layer.