What Causes Seasons?
The four seasons vary significantly in characteristics, and can prompt changes in the world around them.Credit: Shelli Jensen | Shutterstock The passing of a year can bring a marked change in the weather and the surrounding environment. The four seasons — winter, spring, summer, autumn — can vary significantly in characteristics, and can prompt changes in the world around them.
Magnifying the Universe
Embed this infographic on your site! <iframe width="500" height="323" scrolling="no" src=" frameborder="0" allowfullscreen></iframe><br />Copyright 2012. <a href=" the Universe</a> by <a href=" Sleuth</a>. The above is an interactive infographic. We have also developed a complimentary poster that you can view here: Sizes of the Universe poster.
John Townley's AstroCocktail News Archive 2012
Older News Articles, newest first, oldest at bottom (some links may have expired...): Titanic Theories (NY Times) – A good Grey Lady wrap on winter Supermoons plus unusual local conditions that helped conspire to sink the famous ship…not to mention the novella that predicted it…
Chinese Moon Cake(Yue Bing Recipe)—Traditional Version
This is a traditional Chinese Moon Cake (Known as Yue Bing in Chinese) recipe use red bean paste and egg yolk as filling. Mooncake festival also known as Chinese Mid-autumn day is my birthday and I am really excited that it is coming. It is celebrated on the 15th day of the 8th month (八月十五) on lunar calendar. I was born 28 years ago and recently I am quite busy with my mooncake festival gift for my parents and friends—Chinese Moon Cake.
HowStuffWorks "Night and Day"
Some of the sun's biggest impacts on our planet are also its most obvious. As the Earth spins on its axis, parts of the planet are in the sun while others are in the shade. In other words, the sun appears to rise and set. The parts of the world that are in daylight get warmer while the parts that are dark gradually lose the heat they absorbed during the day.
Concept Development Maps
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If the sun were so much larger than the earth, Aristarchus argued that it was likely to lie at the center of the planetary system, with the earth orbiting it. He appreciated the issue of parallax in this system and correctly proposed that the stars are very far away compared with the size of the orbit of the earth: "that the sphere of fixed stars is of such a size that the circle, in which he supposes the earth to move, has the same ratio to the distance of the fixed stars as the center of a sphere has to the surface." Despite the supporting observations regarding the size of the sun, Aristarchus' concept was ultimately rejected in favor of keeping the earth at the center of the system.
EARTH'S Seasons - Zoom Astronomy
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The Cell: A Learning Tool
This interactive learning tool was developed to help middle school students attain a greater understanding of the cell, cell organelles and their functions, and to improve retention of scientific knowledge in preparation for the State of California Standards exams in life science. Onscreen and off screen ("hands on") activities are provided in this learning tool on the cell. Off screen activities include printing outlines of the animal cell, which the students cut out, color, assemble, and label.
Look on My Works, Ye Mighty, and Despair! « Burrito Justice
Look on my works, ye Mighty, and despair! Shots from NASA’s Galileo space probe as it swung by the Earth and the Moon in 1992. (May take a minute to get going – click image for a larger version. Animation by Gordan Ugarkovic, via The Planetary Society.) Since the Mission is not actually visible in the above video, I will reuse this awesome shot of the earth rising over the horizon of the moon from Japan’s late Kaguya orbiter. Hopefully this puts some things in perspective.
Big ocean currents
PROFESSOR KEITH HUNTER There are lots of currents in the ocean but there are some big ones that are responsible for the main behaviour of the ocean, and one of them is the current we call the North Atlantic Current, which is formed in the Norwegian Sea, in the north of the Atlantic Ocean. And that current is formed by cooling down of seawater, and when you cool seawater down, it becomes heavier - if you cool anything down, it becomes heavier, and when it becomes heavier the force of gravity becomes more important, and so the cold water begins to sink down and it forms a river. This cold seawater flows down the sea floor into the bottom of the ocean, so it’s a river flowing inside water. Now the size of the North Atlantic Current is about 50 times the size of all rivers in the world added together, and there are quite a number of currents like the North Atlantic Current. The ocean currents that sink down into the deep ocean flush out the deep ocean.
Practical Physics
This website is for teachers of physics in schools and colleges. It is a collection of experiments that demonstrate a wide range of physical concepts and processes. Some of the experiments can be used as starting-points for investigations or for enhancement activities. Many have links to carefully selected further reading and all include information and guidance for technicians. Physics is a practical science. Practical activities are not just motivational and fun: they can also sharpen students’ powers of observation, stimulate questions, and help develop new understanding and vocabulary.
