Understanding of the Causes of Downstream Grain-size Decrease in Fluvial Sediments: Survey for Elementary School Students, Junior High School Students, University Students, and Elementary School Teachers

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Other Title
  • 河床堆積物の下流方向への細粒化の成因についての認識―小学生・中学生・大学生・小学校教員への調査―

Abstract

<p>There are two conflicting theories on the cause of downstream grain-size decrease in fluvial sediments. One is that the dominant factor is the breaking and abrasion of the flowing sand and gravel, and the other is that the dominant factor is the selective transport of sand and gravel by flowing water. In this study, we surveyed how elementary school students, junior high school students, university students, and elementary school teachers understand the downstream grain-size decrease of fluvial sediments. More than 80% of elementary school and junior high school students supported breaking and abrasion as the primary factor. In addition, 57.1% of the elementary school teachers listed breaking and abrasion as the primary factor, while 36.7% of the teachers supported selective transport. We also found that there was a discrepancy between teachers’ and children’s perceptions of the primary factor.</p>

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Details 詳細情報について

  • CRID
    1390856995346489856
  • DOI
    10.18904/chigakukyoiku.75.2_59
  • ISSN
    24238953
    00093831
  • Text Lang
    ja
  • Data Source
    • JaLC
    • KAKEN
  • Abstract License Flag
    Disallowed

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