https://www.khanacademy.org/science/telangana-class-8-science/x17f7017799a605d2:some-natural-phenomena/x17f7017799a605d2:earthquake/a/earthquakes-101 2025-03-07T16:50:49.734868403Z Earthquakes 101 article https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-2/x21bb710e6de17395:plate-tectonics-and-earth-s-processes/x21bb710e6de17395:earthquakes-and-plate-tectonics/a/exploration-questions-eearthquakes 2025-03-07T17:51:33.199949396Z Exploration Questions: Earthquakes article https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-2/x21bb710e6de17395:plate-tectonics-and-earth-s-processes/x21bb710e6de17395:earthquakes-and-plate-tectonics/a/answers-to-exploration-questions-eearthquakes 2025-03-07T17:51:33.199949396Z Answers to Exploration Questions: Earthquakes article https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/seismic-waves-tutorial/v/seismic-waves 2021-04-29T19:30:41Z Seismic waves S-waves and P-waves Sal Khan video https://cdn.kastatic.org/googleusercontent/3ejbQao8edErsPWzk4TplP5t2aUBahnxfkynq34LfhZo79k18RIRRbKUdCGW15YsMk9WQY9WVJLPa47olaG3u1ak Seismic waves S-waves and P-waves https://cdn.kastatic.org/ka-youtube-converted/NhioAAdYDJM.mp4/NhioAAdYDJM.mp4 518 Earthquakes, seismic waves, and earthquake hazard mitigation https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/seismic-waves-tutorial/v/why-s-waves-only-travel-in-solids 2021-04-26T14:33:09Z Why S-waves only travel in solids Why S-Waves Only Travel in Solids Sal Khan video https://cdn.kastatic.org/googleusercontent/47adyeiJPZEcqLLEvNOd6ljO4SBnVmaYntqfn13vIbkr6vitd6qxPsobiFhW_-xpc8xZVs-V_W3jRXfpfCuY1S3n Why S-waves only travel in solids Why S-Waves Only Travel in Solids https://cdn.kastatic.org/ka-youtube-converted/BTWLwoaNeBA.mp4/BTWLwoaNeBA.mp4 255 Earthquakes, seismic waves, and earthquake hazard mitigation https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/seismic-waves-tutorial/v/refraction-of-seismic-waves 2021-05-28T22:26:27Z Refraction of seismic waves Refraction of Seismic Waves Sal Khan video https://cdn.kastatic.org/googleusercontent/mRgmuW2G4w9EMGenE2nVonJqdkTr0NlZAo6iRty5wZA1jQu_O80AjCSyPFSSgBWEnxQhSxvhDyU300iqFxydJae5 Refraction of seismic waves Refraction of Seismic Waves https://cdn.kastatic.org/ka-youtube-converted/UNZ171fDja4.mp4/UNZ171fDja4.mp4 562 Earthquakes, seismic waves, and earthquake hazard mitigation https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/seismic-waves-tutorial/v/the-mohorovicic-seismic-discontinuity 2021-04-29T19:30:41Z The mohorovicic seismic discontinuity The Mohorovicic Seismic Discontinuity- boundary between crust and mantle (or Moho) Sal Khan video https://cdn.kastatic.org/googleusercontent/SlEFcUwz43LTs0M4VXT2ZjUVckT-S-ppOBsNfWk2DEgAje6EnqQX2IzCAFTz6G3vVpbeDq1kSe8nyZlU3oCPeycs The mohorovicic seismic discontinuity The Mohorovicic Seismic Discontinuity- boundary between crust and mantle (or Moho) https://cdn.kastatic.org/ka-youtube-converted/yAQSucmHrAk.mp4/yAQSucmHrAk.mp4 373 Earthquakes, seismic waves, and earthquake hazard mitigation https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-2/x21bb710e6de17395:plate-tectonics-and-earth-s-processes/x21bb710e6de17395:earthquakes-and-plate-tectonics/e/quiz-earthquakes 2026-04-07T23:17:37.123726494Z Quiz: Earthquakes American Museum of Natural History exercise https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-2/x21bb710e6de17395:plate-tectonics-and-earth-s-processes/x21bb710e6de17395:earthquakes-and-plate-tectonics/v/on-shaky-ground 2023-08-28T21:04:13.658673768Z On Shaky Ground: Building a Safer Future in Haiti November 2010, ten months after a magnitude 7.0 earthquake flattened huge sections of Port-au-Prince, Haiti, a team of geologists commissioned by the United Nations set out to make the first detailed soil map of the city. Armed with sledgehammers and vibration sensors, the scientists surveyed how soils throughout Port-au-Prince either amplify or muffle seismic vibrations. The resulting map can now be used to guide reconstruction efforts. In this Science Bulletins feature, learn how geologists and engineers in Haiti and San Francisco are improving our resilience to powerful shifts of Earth's crust.     American Museum of Natural History video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw On Shaky Ground: Building a Safer Future in Haiti November 2010, ten months after a magnitude 7.0 earthquake flattened huge sections of Port-au-Prince, Haiti, a team of geologists commissioned by the United Nations set out to make the first detailed soil map of the city. Armed with sledgehammers and vibration sensors, the scientists surveyed how soils throughout Port-au-Prince either amplify or muffle seismic vibrations. The resulting map can now be used to guide reconstruction efforts. In this Science Bulletins feature, learn how geologists and engineers in Haiti and San Francisco are improving our resilience to powerful shifts of Earth's crust.     https://cdn.kastatic.org/ka-youtube-converted/Hl5Y0k8biGo.mp4/Hl5Y0k8biGo.mp4 543 Earthquakes, seismic waves, and earthquake hazard mitigation https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-2/x21bb710e6de17395:plate-tectonics-and-earth-s-processes/x21bb710e6de17395:earthquakes-and-plate-tectonics/v/tsunami-science 2023-08-28T21:04:13.658673768Z Science Bulletins: Tsunami Science—Reducing the Risk The scientific data left in the wake of the horrific December 26, 2004 tsunami is proving invaluable to better prepare for future events. Meet the researchers at the crest of this relatively young science. Featured are the geologists, seismologists, and computer modelers of the U.S. Pacific Northwest, an area replete with geological and anthropological evidence of past tsunamis. Learn how the region is preparing for its inevitable next wave. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Science Bulletins: Tsunami Science—Reducing the Risk The scientific data left in the wake of the horrific December 26, 2004 tsunami is proving invaluable to better prepare for future events. Meet the researchers at the crest of this relatively young science. Featured are the geologists, seismologists, and computer modelers of the U.S. Pacific Northwest, an area replete with geological and anthropological evidence of past tsunamis. Learn how the region is preparing for its inevitable next wave. https://cdn.kastatic.org/ka-youtube-converted/KFKJQtRLeds.mp4/KFKJQtRLeds.mp4 427 Earthquakes, seismic waves, and earthquake hazard mitigation https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:disaster-management/x0f256b8de9c7cf34:earthquakes/v/earthquakes 2026-02-28T16:20:46.436623441Z Earthquakes - Responses and Precautions Learn the correct responses and precautions during earthquakes. Understand what to do indoors, outdoors, and who is most at risk in this clear middle school disaster safety lesson. Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Earthquakes - Responses and Precautions Learn the correct responses and precautions during earthquakes. Understand what to do indoors, outdoors, and who is most at risk in this clear middle school disaster safety lesson. https://cdn.kastatic.org/ka-youtube-converted/_E85e89_4jw.mp4/_E85e89_4jw.mp4 294 Earthquakes, seismic waves, and earthquake hazard mitigation 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