https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:force-and-pressure/x0f256b8de9c7cf34:pressure/v/what-is-pressure 2023-07-03T13:44:16.33096147Z What is Pressure? Let's understand the concept of pressure through a simple activity! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw What is Pressure? Let's understand the concept of pressure through a simple activity! https://cdn.kastatic.org/ka-youtube-converted/zY2QlLzBq94.mp4/zY2QlLzBq94.mp4 263 Particulate Nature of Matter https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:force-and-pressure/x0f256b8de9c7cf34:pressure/v/effect-of-different-force-on-same-contact-area 2023-07-03T13:44:16.33096147Z Effect of different force on same contact area How does pressure change when different force is applied on the same contact area? Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Effect of different force on same contact area How does pressure change when different force is applied on the same contact area? https://cdn.kastatic.org/ka-youtube-converted/gOpy5E1waCM.mp4/gOpy5E1waCM.mp4 82 Particulate Nature of Matter https://www.khanacademy.org/science/revision-jnv-science-class-8/x5980b587d134b38f:week-4/x5980b587d134b38f:particulate-nature-of-matter/e/formation-of-wind-and-high-speed-winds 2026-04-07T22:59:30.107127435Z Formation of wind and high speed winds Explore how differences in air pressure cause the movement of wind and how high-speed winds can lower air pressure, leading to natural effects like sea breeze, land breeze, and roof lift during storms. This Class 8 Science exercise helps students understand wind formation, air pressure balance, and everyday examples through engaging, concept-based questions. Yajurva Joshi exercise https://www.khanacademy.org/science/telangana-class-8-science/x17f7017799a605d2:force/x17f7017799a605d2:pressure/e/force-and-pressure-i 2025-02-06T05:32:11.208946943Z Definition and units of force and pressure Force and pressure - middle school - LO1 mapped exercise Aakash Bagga exercise https://www.khanacademy.org/math/als-k-to-12-math/x54b4346ef80b5dcc:performance-standard/x54b4346ef80b5dcc:pressure/e/air-pressure 2026-04-08T01:15:04.085520103Z Air pressure Let's solve some problems to better understand air pressure. Aakash Bagga exercise https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:winds-storms-and-cyclones/x2afa7396c019dcda:untitled-197/v/severestorms 2025-07-01T18:08:15.179962416Z Severe storms We might prefer beautiful weather reports, but we really pay attention when severe storms are predicted. So how do Earth's most powerful storms develop, and how is this related to cloud formation? NOVA video https://cdn.kastatic.org/googleusercontent/XmyIMmxX3-ws3FZf79K8o-ChUtwO8RRUIVfp4oL-uR4KfM3sX0kuJpVgV7QGWsZZkDVUgiO5f3WzGpB_E1ShrPcs Severe storms We might prefer beautiful weather reports, but we really pay attention when severe storms are predicted. So how do Earth's most powerful storms develop, and how is this related to cloud formation? https://cdn.kastatic.org/ka-youtube-converted/xJ-bPlF6PNc.mp4/xJ-bPlF6PNc.mp4 218 Particulate Nature of Matter https://www.khanacademy.org/science/ncert-class-8-science/x55541eeaec8b3a9a:some-natural-phenomena/x55541eeaec8b3a9a:lightning/e/storm 2026-04-08T01:15:04.085520103Z Storm Explore how storms form through rising warm air, condensation, and wind circulation, and learn key safety measures during thunderstorms. Yajurva Joshi exercise https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:electricity/x0c8b40bd4b242f0b:lightning-and-lightning-conductors/v/atmospheric-electric-charge 2025-01-08T02:29:38.725066879Z Atmospheric Electric Charge Explore the science of lightning! Learn about lightning within clouds, between clouds, and cloud-to-ground strikes. Discover how lightning conductors work with an engaging animation in this educational video. Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Atmospheric Electric Charge Explore the science of lightning! Learn about lightning within clouds, between clouds, and cloud-to-ground strikes. Discover how lightning conductors work with an engaging animation in this educational video. https://cdn.kastatic.org/ka-youtube-converted/LXEXJwqh1dg.mp4/LXEXJwqh1dg.mp4 450 Particulate Nature of Matter https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:electricity/x0c8b40bd4b242f0b:lightning-and-lightning-conductors/e/lightning 2026-04-07T23:36:17.218592739Z Atmospheric electric charge Let's practice! Aakash Bagga exercise https://www.khanacademy.org/science/telangana-class-8-science/x17f7017799a605d2:some-natural-phenomena/x17f7017799a605d2:earthquake/e/earthquake 2026-04-08T00:54:09.631945657Z Earthquake This exercise on Earthquakes for Class 8 Science (Chapter 15: Some Natural Phenomena) covers definition, causes, effects, seismic zones in India, Richter scale, prediction myths, safety measures, and quake-resistant structures.It helps students understand earthquakes scientifically and learn how to stay safe. Yajurva Joshi exercise https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:winds-storms-and-cyclones/x2afa7396c019dcda:storms/v/tropical-cyclones 2025-07-16T22:11:44.585720097Z Tropical cyclones Tropical cyclones are powerful, rotating storms that form over warm ocean water. They build strength through rising moist air and heat released during condensation. The Coriolis effect causes them to spin—counterclockwise in the Northern Hemisphere, clockwise in the Southern. These storms weaken over land or cool water but can still cause severe wind and flooding. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/d37e06e5-db13-4889-b769-94d53d105779_1280_720_base.png Tropical cyclones Tropical cyclones are powerful, rotating storms that form over warm ocean water. They build strength through rising moist air and heat released during condensation. The Coriolis effect causes them to spin—counterclockwise in the Northern Hemisphere, clockwise in the Southern. These storms weaken over land or cool water but can still cause severe wind and flooding. https://cdn.kastatic.org/ka-youtube-converted/kRp-VcCaUS0.mp4/kRp-VcCaUS0.mp4 341 Particulate Nature of Matter https://www.khanacademy.org/science/grade-8-science-tx/x3cd7525f789ab4f1:weather-systems/x3cd7525f789ab4f1:tropical-cyclones/e/understand-tropical-cyclones 2026-04-07T23:17:37.123726494Z Understand: tropical cyclones Check your understanding of tropical cyclones in this set of free, standards-aligned practice questions. Wieteke Holthuijzen exercise