Aurora Borealis by KIERA RUNSKE https://padlet.com/1402161/5s8ffdi7sbwy A natural beauty. en-us 2020-03-06 18:16:40 UTC 2020-03-26 23:37:50 UTC hello@padlet.com 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/455945613 2020-03-06 18:21:06 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/455945613 What are they? 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/455946081 2020-03-06 18:21:46 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/455946081 Where are they the most visible? 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/455948362 In Fairbanks, Alaska, the sky glows with the aurora borealis. This is the best place to see the lights. ]]> 2020-03-06 18:24:50 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/455948362 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457067101 2020-03-09 17:59:23 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457067101 When was it discovered? 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457071792 The term aurora borealis is credited to have first been used by Pierre Gassendi and Galileo Galilei who both witnessed a light display on Sept. 12, 1621.]]> 2020-03-09 18:04:44 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457071792 How people figured out how it worked? 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457074688 Kristian Birkeland first mapped the electric and magnetic fields of the Earth near the North pole. Then, he built a model of the Earth's magnetic field that he used to show that electrons would glow near the polar regions when injected into the model. ]]> 2020-03-09 18:08:11 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457074688 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457077613 2020-03-09 18:11:31 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457077613 How it works? 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457841915 Earth's magnetic field usually deflects these charged particles from the sun, but the field is weaker at the planet's poles. So some particles sneak through, producing the aurora borealis near the North Pole and the aurora australis near the South Pole.]]> 2020-03-10 18:22:00 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457841915 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457844296 2020-03-10 18:24:24 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457844296 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/457845715 2020-03-10 18:25:47 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/457845715 Sources 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/459406528 2020-03-12 17:55:35 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/459406528 Summary 1402161 https://padlet.com/1402161/5s8ffdi7sbwy/wish/459407326 2020-03-12 17:56:19 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/459407326 Summary https://padlet.com/1402161/5s8ffdi7sbwy/wish/477519942 https://docs.google.com/document/d/1wSKpFMvlBFxSLJXArncMB-lRlLOoVNPzYwB4NRq3f_U/edit]]> 2020-03-26 23:35:31 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/477519942 Sources https://padlet.com/1402161/5s8ffdi7sbwy/wish/477521222 https://docs.google.com/document/d/1uYspkaptiXtbjFuTT3Omum0NCFdfTl62kdrOJHH60RY/edit]]> 2020-03-26 23:37:18 UTC https://padlet.com/1402161/5s8ffdi7sbwy/wish/477521222