background preloader

Science

Facebook Twitter

Science Museum, London. STEM Planet | Your Inner Fish: Teaching Tools. Teaching Tools In Your Inner Fish, Neil Shubin tells the story of evolution by tracing the organs of the human body back millions of years, long before the first creatures walked the earth. By examining fossils and DNA, Shubin shows us that our hands actually resemble fish fins, our head is organized like that of a long-extinct jawless fish, and major parts of our genome look and function like those of worms and bacteria.

We have compiled the figures from the book into a deck of PowerPoint slides for use in the classroom. Chapter 1: Finding Your Inner Fish Seven slides including the fin-to-limb transition and photographs of the unearthing of Tiktaalik. Download Chapter 1 Slides Chapter 2: Getting a Grip Five slides including the common plan for all limbs and details of Tiktaalik's fin. Download Chapter 2 Slides Chapter 3: Handy Genes Three slides including the ZPA, the developing chicken wing, and genes & DNA. Download Chapter 3 Slides Chapter 4: Teeth Everywhere Download Chapter 4 Slides. Journey to Planet Earth. Evolution. Search Results. An Elemental Quiz. It's Elemental. A Trip Through Spacetime. A Trip Through Spacetime See how space and time are in the eye of the beholder 1. Einstein understood that the speed of light never changes. All observers, no matter where they are or how fast they're moving, will measure the same speed of light. 2.

Einstein realized that if the speed of light never changes, then two people moving at tremendous speeds relative to each other will experience TIME differently. Imagine a clock made of two mirrors. 3. 4. Watching from the crosswalk, you would see the clock within the cab ticking much more slowly. 5. Physicists call this effect TIME DILATION. 6. If the cab driver and you at the crosswalk agree about the speed of light but disagree about measures of time, you must also disagree about measures of length. 7. Yet the cab driver measures this length as less than 10 feet. 8. Physicists call this effect LENGTH CONTRACTION. 9. To explore this phenomenon—special relativity in action—climb aboard our imaginary cab.

Take a high-speed cab ride with Einstein. Space, NASA Information & News | Outer Space Flight Videos & Pictures | Astronomy, Solar System Images. Popular Science | New Technology, Science News, The Future Now. Science. Science News, Articles and Information | Scientific American. Www.theweathermakers.org/pdf/tacc.pdf.