{"product_id":"gravity-orbits-simulation-phet-universal-gravitation","title":"Gravity and Orbits Simulation — Universal Gravitation —…","description":"\u003cdiv style=\"background:#f0fdf4;border:2px solid #16a34a;border-radius:8px;padding:14px 18px;margin-bottom:18px;font-size:15px;line-height:1.5;\"\u003e\n\u003cstrong\u003e📦 Save with the Gravity Unit Bundle:\u003c\/strong\u003e Get every gravity resource I sell — quizzes, slide decks, labs, crosswords, warmups, the test, and the escape room — bundled for \u003cstrong\u003e$48.75\u003c\/strong\u003e. \u003ca href=\"\/products\/complete-high-school-physics-gravity-unit-bundle-ngss-aligned-grades-9-12\" style=\"color:#15803d;font-weight:600;\"\u003eGet the Physics Gravity Unit Bundle — NGSS Grades 9-12 →\u003c\/a\u003e\n\u003c\/div\u003e\nStudents explore how mass, distance, and velocity affect gravitational force and orbital motion using the free PhET Gravity and Orbits simulation.\n\nThey manipulate star and planet mass sliders, adjust velocity arrows mid-orbit, and observe changes to orbital paths — building intuition about Fg = Gm1m2\/d2 through direct experimentation.\n\nWhat's Included:\n• Simulation activity worksheet with 14 guided tasks and analysis questions\n• Teacher notes with answer key and pacing guide\n• Print-ready digital resource + editable Word formats\n\nWorks on any laptop or Chromdigital resource. No lab equipment needed. Perfect for sub plans. Designed for Grades 9-12 physics. NGSS-aligned. 45-60 minutes.\n\u003cdiv style=\"background:#ecfdf5;border:2px solid #059669;border-radius:12px;padding:16px 20px;margin:20px 0;text-align:center;\"\u003e\n\u003cp style=\"font-size:14px;font-weight:bold;color:#065f46;margin:0 0 6px 0;\"\u003e📦 Get the complete Gravity unit\u003c\/p\u003e\n\u003cp style=\"font-size:13px;color:#374151;margin:0 0 10px 0;\"\u003eThis resource is part of the \u003cstrong\u003eGravity Unit Bundle\u003c\/strong\u003e — all lessons, labs, assessments, and review materials for the full unit.\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003e\u003ca href=\"\/products\/high-school-physics-gravity-unit-bundle\" style=\"display:inline-block;background:#059669;color:#ffffff;padding:10px 24px;border-radius:8px;text-decoration:none;font-weight:bold;font-size:14px;\"\u003eView the Gravity Unit Bundle →\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Phantastic Physics","offers":[{"title":"Default Title","offer_id":48541227221221,"sku":null,"price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/4762\/8517\/files\/Gravity_and_Orbits_Thumbnail.png?v=1773265257","url":"https:\/\/phantasticphysics.com\/products\/gravity-orbits-simulation-phet-universal-gravitation","provider":"Phantastic Physics","version":"1.0","type":"link"}