https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/air 2026-03-27T05:00:18.38177999Z Air: Its composition and Air Pollution Gain insights about the composition of air and the causes of air pollution. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Air: Its composition and Air Pollution Gain insights about the composition of air and the causes of air pollution. https://cdn.kastatic.org/ka-youtube-converted/rJIfJN6jdBo.mp4/rJIfJN6jdBo.mp4 335 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/land-layers-of-soil-and-its-formation 2025-01-27T07:04:21.433023569Z Land : Layers of soil and its formation What is soil made up of? What are the many layers of soil? How is soil formed? What makes soil fertile? Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Land : Layers of soil and its formation What is soil made up of? What are the many layers of soil? How is soil formed? What makes soil fertile? https://cdn.kastatic.org/ka-youtube-converted/kyhBLIMzqW0.mp4/kyhBLIMzqW0.mp4 320 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/structure-of-soil-its-uses 2025-01-08T02:29:38.725066879Z Structure of Soil & Its uses Structure and uses of soil. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Structure of Soil & Its uses Structure and uses of soil. https://cdn.kastatic.org/ka-youtube-converted/NSI6VQwWBgE.mp4/NSI6VQwWBgE.mp4 373 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/formation-of-soil 2026-04-08T00:54:09.631945657Z Formation of soil Let's solve some questions vibhor exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/water 2025-01-27T07:04:21.433023569Z Water Water scarcity is a major problem faced by over 2 Billion people across the globe. But why does this happen when 70% of the Earth's surface is made up of water? How can we help save water? Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Water Water scarcity is a major problem faced by over 2 Billion people across the globe. But why does this happen when 70% of the Earth's surface is made up of water? How can we help save water? https://cdn.kastatic.org/ka-youtube-converted/Dozbgnftdao.mp4/Dozbgnftdao.mp4 254 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/natural-resources 2026-04-08T00:54:09.631945657Z Natural resources Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/solar-energy-in 2025-06-10T18:47:28.579833154Z Solar energy Let's understand Solar energy! Dubverse video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Solar energy Let's understand Solar energy! https://cdn.kastatic.org/ka-youtube-converted/DOZZDJ36sE0.mp4/DOZZDJ36sE0.mp4 408 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/using-solar-energy-energy-conservation-in-daily-life 2025-07-11T07:48:33.856979502Z Using solar energy ; Energy conservation in daily life Let's solve some problems to better understand the utilisation of solar energy and energy conservation in daily life. Aakash Bagga exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/forest-and-ocean-resources 2025-01-08T02:29:38.725066879Z Forest and Ocean Resources Discover the classification of forest and ocean resources! Learn about biotic and abiotic resources, ocean energy, and more in this video. Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Forest and Ocean Resources Discover the classification of forest and ocean resources! Learn about biotic and abiotic resources, ocean energy, and more in this video. https://cdn.kastatic.org/ka-youtube-converted/d-6NM2ierIo.mp4/d-6NM2ierIo.mp4 493 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/forest-and-ocean-resources 2026-04-07T22:23:57.656416987Z Forest and Ocean resources Let's practice vibhor exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/coal 2025-03-17T04:25:19.828970649Z Coal Ever wondered how a simple black rock changed the world? In this video, we dive into the fascinating journey of coal—from its origins in ancient forests 300 million years ago to becoming one of the most important fuels in history. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Coal Ever wondered how a simple black rock changed the world? In this video, we dive into the fascinating journey of coal—from its origins in ancient forests 300 million years ago to becoming one of the most important fuels in history. https://cdn.kastatic.org/ka-youtube-converted/8oI7t3TqHM4.mp4/8oI7t3TqHM4.mp4 314 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/coal 2026-04-10T10:30:33.657604274Z Coal Lets answer some questions! Shankar R exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/petroleum 2025-03-17T04:25:19.828970649Z Petroleum Ever wondered where petrol actually comes from? It’s not just pumped out of the ground—it has a story that began millions of years ago! Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Petroleum Ever wondered where petrol actually comes from? It’s not just pumped out of the ground—it has a story that began millions of years ago! https://cdn.kastatic.org/ka-youtube-converted/HVXlQwtntcs.mp4/HVXlQwtntcs.mp4 373 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/petroluem 2026-04-08T01:15:04.085520103Z Petroluem Lets answer some questions! Shankar R exercise https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/natural-gas 2025-03-17T04:25:19.828970649Z Natural Gas Natural gas is one of the most useful fossil fuels, powering our homes, vehicles, and industries. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Natural Gas Natural gas is one of the most useful fossil fuels, powering our homes, vehicles, and industries. https://cdn.kastatic.org/ka-youtube-converted/YMCKMCu3QqQ.mp4/YMCKMCu3QqQ.mp4 290 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/natural-gas 2026-04-10T10:30:33.657604274Z Natural Gas Lets answer some question! Shankar R exercise https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-i/v/common-fuel-types-and-uses 2025-08-08T21:39:42.49220884Z Common fuel types and uses Fossil fuels, including petroleum, coal, and natural gas, originate from different organic materials and have varied uses and environmental impacts. Nuclear fuel, another nonrenewable energy source, provides a high energy yield but poses challenges with radioactive waste. With growing needs for energy, integrating renewable sources into our energy source mix is important. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/22835b37-9755-473c-aa4d-dcdee9de9c1e_1280_720_base.png Common fuel types and uses Fossil fuels, including petroleum, coal, and natural gas, originate from different organic materials and have varied uses and environmental impacts. Nuclear fuel, another nonrenewable energy source, provides a high energy yield but poses challenges with radioactive waste. With growing needs for energy, integrating renewable sources into our energy source mix is important. https://cdn.kastatic.org/ka-youtube-converted/_N6BfGeC1dY.mp4/_N6BfGeC1dY.mp4 275 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/renewable-and-non-renewable-energy-sources 2025-06-10T18:47:28.579833154Z Renewable and non renewable energy sources Let's understand Renewable and Non-renewable sources of energy Dubverse video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Renewable and non renewable energy sources Let's understand Renewable and Non-renewable sources of energy https://cdn.kastatic.org/ka-youtube-converted/kbTlS2g_OHQ.mp4/kbTlS2g_OHQ.mp4 181 Nature's Treasures https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/e/sources-of-energy-renewable-and-non-renewable 2026-04-07T22:23:57.656416987Z Sources of Energy (Renewable and non-renewable) LO: Sources of energy (fuel, food, biogas, wind, hydro, solar etc). Revathi exercise