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Eye Facts: 23 Facts about Eyes you didn't know ←FACTSlides→ - 0 views

www.factslides.com/s-Eyes
shared by lobo5879 on 03 Dec 14 - No Cached
    • lobo5879
      lobo5879 on 03 Dec 14
       
      Did you know that goldfish cant blink or close there eyes becayse they dont have eyelids
    • lobo5879
      lobo5879 on 03 Dec 14
       
      Did you know that an ostrichs eyeis biger than its brain
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How are rainbows made? - 0 views

faculty.cord.edu/...genamahlen.html sky Info
shared by garza6544 on 03 Dec 14 - No Cached
  • The birth of each rainbow begins with millions of tiny rain droplets.  The rain droplets serve as a type of reflector of light.  White light enters one individual rain droplet and exits as one specific color of the spectrum.  Without millions of rain droplets, a rainbow would not occur.  If you only had a few rain droplets you would only see a few colors.  This is typically why rainbow appear after a rain storm
  • Each rain droplet has a function in the formation of the rainbow. Sunlight enters the rain droplet at a specific angle and the rain droplet separates the white light into many different colors.  This angle is a fixed measurement between your eye
  • and the sun.  What color is refracted depends upon the critical angle,                   which is the angle the sunlight strikes the back of the rain droplet.  Red light bends the least, exiting the rain droplet at a 42 degree angle, while Violet light bends the most, exiting the rain droplet at a 40 degree angle.  All of the other colors of the rainbow exit the rain droplets at some angle between 40 and 42 degrees, thus making up the colors of the rainbow ROYGBIV, this order never changes.
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  • Each rain droplet reflects all colors at a given point and time, but only one color comes back to your eye, requiring million of rain droplets to create a rainbow.  As the rain droplets fall through the sky, the colors of the spectrum being reflected and refracted are constantly changing.
  • The perfect time and place to look for a rainbow you need bright sunlight to your back and rain clouds off in the distance in the direction of your shadow. If it is later than 4:30 in the afternoon or earlier than 8:30 in the morning at these condition there is a very good chance you will be able to see a rainbow in the sky.  Other places you may see rainbows formed are fountains, in the ocean as the waves crash against the rock which create a mist in the air, waterfalls, sprinklers and mist from a garden hose. Always remember to have the sun at your back to see a rainbow, happy rainbow hunting!!!!!!
  • Rainbows form a complete circle, however only half is visible.  The horizon only  Picture from the web site of the Department of Physics and Astronomy, Arizona State University                                                             allows us to see half of the rainbow circle, so we see just an arc.  What causes the rainbow to have a circular formation is the way that rain droplets fall.  The rain droplets do not fall is flat sheet, however they tend to fall at various distances and speeds.  On some occasions you can see a full circle around a garden hose.
    • garza6544
      garza6544 on 03 Dec 14
       
      each rainbow is made by millions of rain droplets. the rain droplets make a reflect of light and it makes different colors. While light comes in a specific Droplet then it makes a specific color. Without milions and milions of rain droplets the rainbow cant be formed. If you only have a few rain droplets then you will only see a few colors. This is the reason why they happen after a rain storm.
  • function
    • garza6544
      garza6544 on 03 Dec 14
       
      Each rain droplet that rains  is always useful to make a rainbow because every rainbow needs to do something different to make a rainbow. The rain droplets separates the light into different colors.
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Why are Oceans Salty? - EnchantedLearning.com - 0 views

www.enchantedlearning.com/...Salty.shtml Seawater salty
shared by Regina Cantu on 03 Dec 14 - Cached
  • As water flows in rivers, it picks up small amounts of mineral salts from the rocks and soil of the river beds.
  • but the salt remains dissolved in the ocean - it does not evaporate. So the remaining water gets saltier and saltier as time passes.
  • This very-slightly salty water flows into the oceans and seas. The water in the oceans only leaves by evaporating (and the freezing of polar ice),
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How Birds Fly: An In-Depth Journey North Lesson - 0 views

www.learner.org/...FlightLesson.html flight birds wings
shared by touche5839 on 03 Dec 14 - Cached
  • A bird's center of gravity is the balance point between its two wings and between its head and tail. I
  • To fly well, birds must have most of their weight in their center of gravity, and very little weight in front of or behind it.
  • un into the wind, and the rush of air beneath their wings lifts them up. Others, like puffins and Peregrine Falcons, jump off cliffs and other high perches. Chimney Swifts simply let go of their chimney or other vertical perch, and fall into the air. Hummingbird wingbeats are so powerful that they can go straight up from a perched position without jumping. Songbirds, cranes, and many other species leap up on strong legs while flapping their wings, and there they go.
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  • The reason birds can is because of the special shape of their wings. The bones of bird wing are in front, covered with a smooth layer of feathers that taper toward the back.
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Stuff in the Sky - Colors - 0 views

eo.ucar.edu/colors1.htm rainbow colors
shared by guzman5860 on 03 Dec 14 - No Cached
    • guzman5860
      guzman5860 on 03 Dec 14
       
      When the sun is shining and it is raining most of the time you can see a  rainbow. A rainbow is made when light passes through many drops of water the light reflects and it is bent in the shape of a semi cirlce.The rainbow has 7 colors red,orange,yellow,green,blue,indigo,violet
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Why Do Some People Have Differently Colored Eyes? - 0 views

www.livescience.com/-differently-colored-eyes.html people colored eyes
shared by lobo5879 on 03 Dec 14 - No Cached
  • The instance of a person having two differently colored eyes is pretty uncommon, just 11 out of every 1,000 Americans. This uncanny trait is caused by several factors, and can actually develop over time. Iris color develops during the first few months after birth, with the levels of the pigment melanin determining how dark eyes will become. The less melanin expressed in the iris, the lighter a person's eyes look, and vice versa
  • s is pretty uncommon, just 11 out of every 1,000 Americans. This uncanny trait is caused by several factors, and can actually develop over tim
  • Sometimes, though, the concentration and distribution of melanin isn't uniform, which leads to a condition known as heterochromia. This condition can present itself in different ways. There's complete heterochromia, when each eye is a distinctly different color, say, one blue and one brown. Central heterochromia is when the eyes show various colors, such as a blue iris with a golden-brown ring around the pupil. And sectoral heterochromia is when one iris has a splash of color that's different from its overall hue, a trait that actress Kate Bosworth has.
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  • Sometimes, though, the concentration and distribution of melanin isn't uniform, which leads to a condition known as heterochromia. This condition can present itself in different ways. There's complete heterochromia, when each eye is a distinctly different color, say, one blue and one brown. Central heterochromia is when the eyes show various colors, such as a blue iris with a golden-brown ring around the pupil. And sectoral heterochromia is when one iris has a splash of color that's different from its overall hue, a trait that actress Kate Bosworth has.
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Nature vs Nurture: How do baby birds learn how to fly? | Bio-Aerial Locomotion - 1 views

blogs.bu.edu/...do-baby-birds-learn-how-to-fly birds
shared by garzat5774 on 03 Dec 14 - No Cached
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds learn to fly with practice but it is a natural instinct like how hummans learn to walk and talk, bird parent help them by pushing them out of the nest and for them to try to fly.
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How Do Birds Fly? | ASU - Ask A Biologist - 0 views

askabiologist.asu.edu/how-do-birds-fly birds fly wings bones sky
shared by touche5839 on 03 Dec 14 - No Cached
  • Birds use their strong breast muscles to flap their wings and give them the thrust to move throught the air and fly. In a way, birds use a swimming motion to get the lift needed to fly.
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How Car Engines Work - HowStuffWorks - 0 views

auto.howstuffworks.com/engine.htm Car engines howstuffworks
shared by guzman5862 on 03 Dec 14 - Cached
  • Have you ever opened the hood of your car and wondered what was going on in there? A car engine can look like a big confusing jumble of metal, tubes and wires to the uninitiated.
    • guzman5862
      guzman5862 on 03 Dec 14
       
      Don't you ever wondered how is your car when you open it? well they are like a whole system inside it and if you open it you are going to see a lot of cables and tubes.
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