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TeacherTube - Teach the World
Your Age on Other Worlds
Want to melt those years away? Travel to an outer planet! <div class="js-required"><hr> This Page requires a Javascript capable browser <hr></div> Fill in your birthdate below in the space indicated. The Days (And Years) Of Our Lives Looking at the numbers above, you'll immediately notice that you are different ages on the different planets. The earth is in motion. The top-like rotation of the earth on its axis is how we define the day. The revolution of the earth around the sun is how we define the year. We all learn in grade school that the planets move at differing rates around the sun. Why the huge differences in periods? Johannes Kepler Tycho Brahe Kepler briefly worked with the great Danish observational astronomer, Tycho Brahe. Here you see a planet in a very elliptical orbit. Kepler's third law is the one that interests us the most. Let's just solve for the period by taking the square root of both sides: The Gravity Of The Situation Isaac Newton ©2000 Ron Hipschman
Games@NOAA
The Best YouTube Tools and Tips for Teachers
YouTube has been one of our topical themes here in Educational Technology and Mobile Learning during this year. We have done a lot of reviewing of third party tools that work on YouTube and enhance the users video watching experience. We have also unearthed several other educational ways to use this video platform with your students as well as for professional development. Any time you want to check and stay updated about the upcoming releases and tips on the use of YouTube in education, make sure you bookmark YouTube for Teachers section. Today we are providing you with the best posts we have published about YouTube . 1- Add Quizzes to YouTube Videos 2- TeachEm Create Interactive Lesson Plans from YouTube Videos 4- YouTube Official Guide for Educators 5- 10 Ways Teachers Can Use YouTube 8- 9 Great Animation and Video Creation Tools Integrated with YouTube 9- 10 Great YouTube Tips every Educators should Know about
Your Weight on Other Worlds
Ever wonder what you might weigh on Mars or The Moon? Here's your chance to find out. <div class="js-required"><hr> This Page requires a Javascript capable browser <hr></div> Fill in your weight below in the space indicated. Mass and Weight Before we get into the subject of gravity and how it acts, it's important to understand the difference between weight and mass. We often use the terms "mass" and "weight" interchangeably in our daily speech, but to an astronomer or a physicist they are completely different things. Weight is an entirely different thing. If you are in a spaceship far between the stars and you put a scale underneath you, the scale would read zero. The Relationship Between Gravity and Mass and Distance As stated above, your weight is a measure of the pull of gravity between you and the body you are standing on. The two "M's" on top are your mass and the planet's mass. All things by immortal power near or far to each other hiddenly linked are. Isaac Newton
Discover the world's most endangered species
Wildscreen's Arkive project was launched in 2003 and grew to become the world's biggest encyclopaedia of life on Earth. With the help of over 7,000 of the world’s best wildlife filmmakers and photographers, conservationists and scientists, Arkive.org featured multi-media fact-files for more than 16,000 endangered species. Freely accessible to everyone, over half a million people every month, from over 200 countries, used Arkive to learn and discover the wonders of the natural world. Since 2013 Wildscreen was unable to raise sufficient funds from trusts, foundations, corporates and individual donors to support the year-round costs of keeping Arkive online. As a small conservation charity, Wildscreen eventually reached the point where it could no longer financially sustain the ongoing costs of keeping Arkive free and online or invest in its much needed development. Therefore, a very hard decision was made to take the www.arkive.org website offline in February 2019.
Leva i rymden - Tekniska museet
Livet på en rymdstation kan låta lockande och häftigt men det är dock väldigt speciellt och krävande av individerna som tränas långt i förväg. Tyngdlösheten påverkar allt astronauterna gör ombord, hur de äter, dricker, sover och arbetar. Rymdstationen ISS befinner sig 400 km från jorden, vilket är ungefär samma avstånd som mellan Stockholm och Göteborg. För astronauterna ser vår planet ut som ett blått klot omgivet av atmosfären. Vid klart väder kan de se floder, berg och städer. Tyngdlösheten påverkar kroppen Livet på en rymdstation blir väldigt speciellt på grund av tyngdlösheten. Rymdmaten Christer Fuglesangs granola från en av hans rymdresor. Astronauterna äter frystorkad eller konserverad mat. Vatten i rymden Vatten som behövs för astronauternas överlevnad måste fraktas från jorden till ISS. Rymdstationernas framtid Astronauternas liv i rymden kan bli annorlunda i framtiden. Textbearbetning: Alexandra Selivanova
History of Newton's Papers (1727-1872) | Newton Project
At his death on 20 March 1727,[1] Isaac Newton left papers relating to all areas of the intellectual pursuits he had followed since arriving at Trinity College, Cambridge, in the summer of 1661.[2] His friend, relative by marriage (to Newton's half-niece Catherine Barton) and successor at the Mint, John Conduitt, posted a bond for Newton's debts and claimed entitlement to this material, Newton having died intestate. As is evident from a number of manuscripts adorned with Conduitt's notes and corrections -- for example the manuscript of 'An historical account of two notable corruptions of Scripture in a Letter to a Friend' (now New College, Oxford, Ms. 361.4) -- he took a serious scholarly interest in the papers he had acquired, although this was also partly directed towards the possibility of their publication. Continue reading about the donation of Newton's scientific papers to Cambridge University in 1872 [12] S. Horsley, ed., Isaaci Newtoni Opera quæ exstant Omnia. [14] J. [15] D.
Google Sky
Image may be subject to copyright Terms of Use Bild från: DSS Consortium, SDSS, NASA/ESA
Extreme Weather 2011
A year for the record books From extreme drought, heat waves and floods to unprecedented tornado outbreaks, hurricanes, wildfires and winter storms, a record 14 weather and climate disasters in 2011 each caused $1 billion or more in damages — and most regrettably, loss of human lives and property. NOAA's National Weather Service has redoubled its efforts to create a "Weather-Ready Nation", where vulnerable communities are better prepared for extreme weather and other natural disasters. NOAA forecasts, advisories, watches, warnings and community-based preparedness programs have been and will continue play an even greater role in enhancing the economy and saving lives. Get historical and current billion-dollar disaster information from NOAA's NCDC »
