https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:the-geosphere/x87d03b443efbea0a:the-rock-cycle/v/the-rock-cycle 2026-06-30T17:20:49.845080165Z The rock cycle The rock cycle describes how the three main rock types—igneous, sedimentary, and metamorphic—change from one type to another. These changes occur through processes such as melting, solidification, and lithification. The rock cycle is driven by energy from Earth's interior and the sun. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/145f367c-5639-493e-8d15-997b39336dd6_1280_720_base.png The rock cycle The rock cycle describes how the three main rock types—igneous, sedimentary, and metamorphic—change from one type to another. These changes occur through processes such as melting, solidification, and lithification. The rock cycle is driven by energy from Earth's interior and the sun. https://cdn.kastatic.org/ka-youtube-converted/rmH4W92eHVM.mp4/rmH4W92eHVM.mp4 284 Rocks https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:the-geosphere/x87d03b443efbea0a:the-rock-cycle/a/the-rock-cycle 2026-06-01T10:10:43.143771843Z Key points: The rock cycle Review your understanding of the rock cycle in this free article aligned to NGSS standards. article https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:the-geosphere/x87d03b443efbea0a:the-rock-cycle/e/understand-the-rock-cycle 2026-06-01T10:10:43.143771843Z Understand: The rock cycle Check your understanding of the rock cycle in this set of free practice questions aligned to NGSS standards. Lauren Rosebrugh exercise https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-1/x006d5d274c051fd7:earth-s-materials-and-resources/x006d5d274c051fd7:rocks-and-soils/v/soil 2025-07-29T05:26:51.951860141Z Soil Did you know it takes thousands of years to make just a spoonful of soil? In this fun and visual video, we explore: 1. What soil is made of 2. How it forms from rocks 3. Types of soil and what grows in them 4. The role of earthworms and decomposers 5. Why soil is so important—and how to protect it! Bitasta Datta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Soil Did you know it takes thousands of years to make just a spoonful of soil? In this fun and visual video, we explore: 1. What soil is made of 2. How it forms from rocks 3. Types of soil and what grows in them 4. The role of earthworms and decomposers 5. Why soil is so important—and how to protect it! https://cdn.kastatic.org/ka-youtube-converted/JdDOv0HXDpw.mp4/JdDOv0HXDpw.mp4 330 Rocks https://www.khanacademy.org/science/ka-science-grade-6/x12c13c153ec99496:nature-s-treasures/x12c13c153ec99496:soil-rocks-and-minerals/e/soil-rocks-and-minerals 2026-04-07T23:36:17.218592739Z Soil, Rocks and Minerals This exercise helps you explore how soil, rocks, and minerals form, their uses, and why they are valuable natural resources. Bitasta Datta exercise