{"id":3212,"date":"2026-05-09T12:43:41","date_gmt":"2026-05-09T10:43:41","guid":{"rendered":"https:\/\/nature-o.net\/?page_id=3212"},"modified":"2026-05-09T12:43:42","modified_gmt":"2026-05-09T10:43:42","slug":"journey-to-earths-center-calculator","status":"publish","type":"page","link":"https:\/\/nature-o.net\/?page_id=3212","title":{"rendered":"Journey to Earth\u2019s Center Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-earth-center-7b9fa\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Journey to Earth\u2019s Center Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Estimate pressure, temperature, gravity, and travel time at different depths inside Earth.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-center-form-7b9fa\" novalidate>\n    <div class=\"eco-tool__grid3\">\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-depth-7b9fa\">Depth below surface<br>(km)<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-depth-7b9fa\" type=\"number\" min=\"0\" max=\"6371\" step=\"1\" value=\"100\">\n        <div class=\"eco-tool__hint\">Earth radius is about 6,371 km.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-speed-7b9fa\">Descent speed<br>(km\/h)<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-speed-7b9fa\" type=\"number\" min=\"1\" step=\"1\" value=\"60\">\n        <div class=\"eco-tool__hint\">Hypothetical drilling or descent speed.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-view-7b9fa\">Main result<br>view<\/label>\n        <select class=\"eco-tool__input\" id=\"eco-view-7b9fa\">\n          <option value=\"layer\">Earth layer<\/option>\n          <option value=\"time\">Descent time<\/option>\n          <option value=\"temperature\">Temperature<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Choose the main output.<\/div>\n      <\/div>\n\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" onclick=\"calc7b9fa()\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" onclick=\"reset7b9fa()\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"err-7b9fa\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"res-7b9fa\" hidden>\n    <div class=\"eco-tool__cards\">\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Main result<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"main-7b9fa\"><\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"sub-7b9fa\"><\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Estimated conditions<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"conditions-7b9fa\"><\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"conditions-sub-7b9fa\"><\/div>\n      <\/div>\n\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Simplified educational estimate only. Real Earth interior conditions depend on rock type, density, phase changes, and complex geophysics.\n    <\/p>\n  <\/div>\n<\/div>\n\n<style>\n.eco-tool{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:16px}\n.eco-tool__header{margin-bottom:12px}\n.eco-tool__title{margin:0 0 8px}\n.eco-tool__lead{margin:0;opacity:.9}\n.eco-tool__grid3{display:grid;grid-template-columns:1fr;gap:16px}\n@media(min-width:860px){.eco-tool__grid3{grid-template-columns:1fr 1fr 1fr}}\n.eco-tool__field{display:flex;flex-direction:column;gap:6px}\n.eco-tool__label{font-weight:600}\n.eco-tool__input{width:100%;height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.2);border-radius:10px;background:#fff;box-sizing:border-box;font:inherit}\n.eco-tool select.eco-tool__input{appearance:none;-webkit-appearance:none;line-height:44px;padding-right:40px;background-image:linear-gradient(45deg,transparent 50%,rgba(0,0,0,.6) 50%),linear-gradient(135deg,rgba(0,0,0,.6) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 12px) 50%;background-size:6px 6px;background-repeat:no-repeat}\n.eco-tool__hint{font-size:.92em;opacity:.78;min-height:38px}\n.eco-tool__actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px}\n.eco-tool__btn{padding:10px 22px}\n.eco-tool__btn--ghost{background:transparent!important;border:1px solid rgba(0,0,0,.2)!important}\n.eco-tool__btn--ghost:hover{background:rgba(0,0,0,.06)!important}\n.eco-tool__error{font-weight:600}\n.eco-tool__result{margin-top:16px}\n.eco-tool__cards{display:grid;gap:10px;grid-template-columns:1fr}\n@media(min-width:860px){.eco-tool__cards{grid-template-columns:1fr 1fr}}\n.eco-tool__card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px}\n.eco-tool__metric-label{opacity:.85;font-weight:600}\n.eco-tool__metric-value{font-size:1.6em;font-weight:800;margin-top:6px}\n.eco-tool__metric-sub{opacity:.85;margin-top:6px}\n.eco-tool__note{margin:10px 0 0;opacity:.9}\n<\/style>\n\n<script>\nfunction calc7b9fa(){\n\n  let depth=+document.getElementById('eco-depth-7b9fa').value;\n  let speed=+document.getElementById('eco-speed-7b9fa').value;\n  let view=document.getElementById('eco-view-7b9fa').value;\n  let err=document.getElementById('err-7b9fa');\n\n  err.textContent=\"\";\n\n  if(depth<0||depth>6371||speed<=0){\n    err.textContent=\"Please enter valid values.\";\n    document.getElementById('res-7b9fa').hidden=true;\n    return;\n  }\n\n  let layer=\"Crust\";\n  if(depth>35) layer=\"Mantle\";\n  if(depth>2890) layer=\"Outer Core\";\n  if(depth>5150) layer=\"Inner Core\";\n\n  let temp=15;\n  if(depth<=35){\n    temp=15+depth*25;\n  }else if(depth<=2890){\n    temp=900+(depth-35)*1.1;\n  }else if(depth<=5150){\n    temp=4000+(depth-2890)*0.6;\n  }else{\n    temp=5400+(depth-5150)*0.4;\n  }\n\n  let pressureGpa=depth*0.055;\n  if(pressureGpa>360) pressureGpa=360;\n\n  let gravity=9.81*(1-depth\/6371);\n  if(gravity<0) gravity=0;\n\n  let timeHours=depth\/speed;\n  let timeText=timeHours<24\n    ? timeHours.toFixed(1)+\" hours\"\n    : (timeHours\/24).toFixed(1)+\" days\";\n\n  let mainText=layer;\n  let subText=\"Estimated Earth layer at this depth\";\n\n  if(view===\"time\"){\n    mainText=timeText;\n    subText=\"Estimated descent time\";\n  }\n\n  if(view===\"temperature\"){\n    mainText=Math.round(temp).toLocaleString()+\" \u00b0C\";\n    subText=\"Estimated temperature\";\n  }\n\n  document.getElementById('main-7b9fa').innerText=mainText;\n  document.getElementById('sub-7b9fa').innerText=subText;\n\n  document.getElementById('conditions-7b9fa').innerText=\n    Math.round(temp).toLocaleString()+\" \u00b0C\";\n\n  document.getElementById('conditions-sub-7b9fa').innerText=\n    pressureGpa.toFixed(1)+\" GPa pressure \u00b7 \"+gravity.toFixed(2)+\" m\/s\u00b2 gravity\";\n\n  document.getElementById('res-7b9fa').hidden=false;\n}\n\nfunction reset7b9fa(){\n  document.getElementById('eco-depth-7b9fa').value=100;\n  document.getElementById('eco-speed-7b9fa').value=60;\n  document.getElementById('eco-view-7b9fa').value=\"layer\";\n  document.getElementById('err-7b9fa').textContent=\"\";\n  document.getElementById('res-7b9fa').hidden=true;\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Journey to Earth\u2019s Center Calculator Estimate pressure, temperature, gravity, and travel time at different depths inside Earth. Depth below surface(km) Earth radius is about 6,371 km. Descent speed(km\/h) Hypothetical drilling&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":3024,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/3212"}],"collection":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3212"}],"version-history":[{"count":1,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/3212\/revisions"}],"predecessor-version":[{"id":3213,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/3212\/revisions\/3213"}],"up":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/3024"}],"wp:attachment":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}