[{"data":1,"prerenderedAt":58},["ShallowReactive",2],{"category-page:\u002Fhigh-school\u002Fbasic-earth-science\u002Fplanet-earth":3},{"category":4,"seo":11,"breadcrumbs":16,"childCategories":23,"topicPreview":24,"topicCount":57},{"path":5,"title":6,"description":7,"shortDescription":8,"parentPath":9,"accentToken":10},"\u002Fhigh-school\u002Fbasic-earth-science\u002Fplanet-earth","惑星としての地球","地球の形と大きさ、測定方法、地球内部の層構造と構成物質を扱うカテゴリです。","地球の形・大きさ・内部構造を測る","\u002Fhigh-school\u002Fbasic-earth-science","signal-blue",{"title":12,"description":13,"canonicalUrl":14,"ogImage":15},"惑星としての地球 | 地学基礎 学習カテゴリ | Zeqnilo","高校地学基礎の地球の形、大きさ、内部構造を短い学習ページで整理します。","https:\u002F\u002Fzeqnilo.com\u002Fhigh-school\u002Fbasic-earth-science\u002Fplanet-earth","https:\u002F\u002Fzeqnilo.com\u002Fassets\u002Fsite\u002Fdefault-og.svg",[17,20,22],{"title":18,"path":19},"高校","\u002Fhigh-school",{"title":21,"path":9},"地学基礎",{"title":6,"path":5},[],[25,39,48],{"id":26,"title":27,"summary":28,"canonicalPath":29,"categoryPath":5,"categoryTitle":6,"difficulty":30,"targetAudience":31,"estimatedMinutes":32,"publishedAt":33,"updatedAt":33,"reviewStatus":34,"tags":35},"high-school-basic-earth-science-planet-earth-earth-shape-size-and-eratosthenes","地球の形・大きさとエラトステネスの測定","二地点の影の角度差と地表距離を地球円周の一部として読み、エラトステネスの比例から地球の大きさを求め、完全な球との違いも整理します。","\u002Fhigh-school\u002Fbasic-earth-science\u002Fplanet-earth\u002Fearth-shape-size-and-eratosthenes","beginner","student_high",6,"2026-07-28","ai_generated",[21,6,36,37,38],"地球の形と大きさ","二地点はほぼ同一子午線上","太陽光はほぼ平行",{"id":40,"title":41,"summary":42,"canonicalPath":43,"categoryPath":5,"categoryTitle":6,"difficulty":30,"targetAudience":31,"estimatedMinutes":44,"publishedAt":33,"updatedAt":33,"reviewStatus":34,"tags":45},"high-school-basic-earth-science-planet-earth-earth-interior-layered-structure","地球内部の層構造","地球内部を地殻、マントル、外核、内核に分け、それぞれの深さと固体・液体の状態を整理します。","\u002Fhigh-school\u002Fbasic-earth-science\u002Fplanet-earth\u002Fearth-interior-layered-structure",5,[21,6,41,46,47],"地殻は薄い外層","マントルは厚い固体岩石層",{"id":49,"title":50,"summary":51,"canonicalPath":52,"categoryPath":5,"categoryTitle":6,"difficulty":30,"targetAudience":31,"estimatedMinutes":32,"publishedAt":33,"updatedAt":33,"reviewStatus":34,"tags":53},"high-school-basic-earth-science-planet-earth-crust-mantle-core-composition","地殻・マントル・核の構成物質","大陸地殻・海洋地殻・マントル・核の代表的な物質と密度の違いを、比較資料から整理します。","\u002Fhigh-school\u002Fbasic-earth-science\u002Fplanet-earth\u002Fcrust-mantle-core-composition",[21,6,54,55,56],"地球内部の構成物質","大陸地殻は花こう岩質","海洋地殻は玄武岩質",3,1785565312806]