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BrainPOP | Immune System - 0 views

    • Regina Cantu
       
      Our Immune system is the system that helps us fight off germs and viruses, if Our immune system wouldn't exist, we would be sick more often.
    • Regina Cantu
       
      When you have a disease you already had, your immune system remembers and knows how to fight it off.
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Kids' Health - Topics - Eyes - how your eyes work - 0 views

  • Your eye works in a similar way to a camera - light passes through the lens of your eye and is 'recorded' on the back of your eye (the retina).
    • guzman5862
       
      Your eye makes kind of the same effects and uses to a camera because a light goes through your eye so that you can see things clearly and that also happens with the camera but thats the flash.
  •  
    Your eye works in a similar way to a camera - light passes through the lens of your eye and is 'recorded' on the back of your eye (the retina).
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Whats Your Problem?|Lesser-Known Sleep Disorders: Parasomnias, Sleepwalking, Teeth Grin... - 0 views

  • Your chance of being a sleepwalker can more than double if one or both parents have had episodes.
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World Clock: Time in the 24 World Time Zones - 0 views

    • marino5856
       
      There are actually 23hr and 59 minutes so they say it is 24 hours. The p.m starts again in one but this is how we count them: 13=1 pm, 14=2 pm 15= 3pm 16= 4 pm 17= 5 pm 18= 6 pm 19= 7 pm 20 =8 pm 21 = 9 pm 22= 10 pm 23 =11 pm. Pm is 23:59:59. AFter this its starts all over again.
  • At Noon, the 12-Hour clock repeats the same hour numbers but as PMAt Noon, the 24-Hour clock keeps adding hour numbers: 13 = 1 PM; 14 = 2 PM; 15 = 3 PM; 16 = 4 PM; 17 = 5 PM; 18 = 6 PM; 19 = 7 PM; 20 = 8 PM; 21 = 9 PM; 22 = 10 PM; 23 = 11 PM through 23:59:59 -- then starts over at 00:00:00 (Midnight)On both clocks, the minutes and seconds are exactly the same
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Mars -- Britannica School - 0 views

  • Nevertheless, the search for life on Mars continues, in part because it shows signs of having been wetter in the past. Water is necessary for all known forms of life. It is possible that microscopic life once existed on Mars. Today the surface is too cold and the air is too thin for liquid water to exist there for long. It is also bombarded with ultraviolet radiation from the Sun, which is very harmful to living things.
    • Diego Hinojosa
       
      Mars is the fourth planet from the sun for years and years there have been sending  little robots and machines from NASA to find more information. It has a very little atmosphere to protect it from the sun.

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BrainPOP | Time Zones - 0 views

    • marino5856
       
      The earth is divided in 24 time zones. Time zones go north south pole  to north pole, they are meridians, They are 360 that are degrees. Thats why they are different times. They are the same minute but different hour to the west of it  and highest hour to the east. Smaller goes to west  and bigger to east. The earth rotates. Thats why the hour changes. Like the sun is up it has a different hour than when the moon is up. The earth soins 15 degrees per hour. The sun rises in L.A. at the same minute than N.Y. when it is getting dark.
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What do Dolphins Eat? - Dolphin Facts and Information - 0 views

  • While some dolphins eat fishes like herring, cod or mackerel, some others eat squids.
    • lopez5891
       
      Dolphins eat small animals, and I think that what they d lis really good because if they ate more bigger animals they would start to be endengared. Because the more little they are, the more number of animals they are.
  • Even more, large dolphins like the killer whales, eat some other marine mammals like seals or sea lions and sometime even turtles.
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Five Stages Of Sleep ... Sleep Cycles Explained - 2 views

  • Stage 1This is the lightest stage of sleep, the transition phase, where you feel yourself drifting off. If you were to forget about the alarm clock and allow yourself to wake up naturally, Stage 1 sleep would be the last stage before you fully wake up. You don't spend too much time in Stage 1 sleep, typically five to 10 minutes, just enough to allow your body to slow down and your muscles to relax.
    • lobo5879
       
      The stage 1 of sleep is when you are starting to relax your muscles and start to sleep. This stages is not very long it is about 5 to ten minutes. This stage is when you wake up more quickly for example if someone touches you you will easily wake up.
  • Stage 2The second stage of sleep is still considered light sleep. Your brain activity starts to slow down, as well as your heart rate and breathing. Your body temperature falls a little and you're beginning to reach a state of total relaxation in preparation for the deeper sleep to come.
  • Stage 3Stage 3 sleep is the start of deep sleep, also known as slow wave sleep. During stage 3, your brain waves are slow "delta waves," although there may still be short bursts of faster of brain activity (also known as beta-waves). If you were to get awakened suddenly during this stage, you would be groggy and confused, and find it difficult to focus at first.
    • lobo5879
       
      this stage is when your body is finishing to relax and example is: if someone trys to wake you up you would be confused and do not know what is happening because you were already finishing to completely relax
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  • Stage 4Of the five stages of sleep, this is the one when you experience your deepest sleep of the night. Your brain only shows delta-wave (slow wave) activity, and it's difficult to wake someone up when they're in Stage 4 of sleep.
    • lobo5879
       
      this stage i when you are more hardly to be awaken. In this stage is when you start to dream and this stage is when the kids start having nightmares
  • It's during Stage 4 sleep that children are most likely to suffer from bedwetting or sleep terrors. Stages 3 and 4 can last anywhere from 5 - 15 minutes each, but the first deep sleep of the night is more likely to be an hour or so. This is the time when the body does most of it's repair work and regeneration.
  • Stage 5 This is the stage of sleep when you dream. It is also referred to as "active sleep" or REM sleep, which stands for the rapid eye movements that characterize Stage 5. During REM sleep, your blood flow, breathing, and brain activity increases. An EEG would show that your brain is about as active as it is when you're awake.Another aspect of Stage 5 sleep is that the muscles in your arms and legs will go through periods of paralysis. Scientists speculate that this may be nature's way of protecting us from acting out our dreams.The first period of REM sleep of the night usually begins about 90 minutes after you start drifting off, and lasts for about 10 minutes. As the night passes, the periods of REM sleep become longer, with the final episode lasting an hour or so.Babies may spend as much as half of the time they're asleep in the REM phase. For a healthy adult, Stage 5 occurs for about 20 to 25% of the time you are sleeping, and decreases with age.Scientists and researchers are continually learning more about the mechanics and physiological effects of sleep, and what happens during the five stages of sleep.
    • lobo5879
       
      This stage is when you are completly relaxed and many babies are many time during this tage and adults are abaut 25% of they sleep
    • lobo5879
       
      This stage is more dificult to wake up because you are alrady in deep sleep.
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Whales and dolphins in captivity - WDC - 0 views

  • Whales and dolphins are highly intelligent animals who want and need to live in complex social groups. In captivity they will usually have been separated from their families, often in cruel hunts and some when they are very young.
    • lopez5891
       
      Dolphins are really intelligent. They are in small groups, until they take them to captivity. There are really big problems on taking them to captivity. One is that they separate them from their family. And another one is that they only get a certain amount of food.
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Dolphin Families - 0 views

  • Your family may be like a dolphin family. Dolphins live in big family groups, called pods. As soon as a baby dolphin, or calf, is born, her mother and father push her to the surface of the water so that she can breathe. The calf stays by her mother's side most of the time, but her father, aunts, uncles, brothers, and sisters all help to take care of her.
    • lopez5891
       
      The Dolphin family is really similar to people family's. The group of Dolphin's are called pods. A baby Dolphin is named calf. When they are big enough, their parents push her/him into the surface. All the family takes care of the baby. By family I mean aunts, uncles, brothers, sisters and obviously their parents. 
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