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Dolphin - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Dolphin Animals related to Dolphins
shared by lopez5891 on 03 Nov 14 - Cached
  • Dolphins are cetacean mammals closely related to whales and porpoises. There are almost forty species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) (Maui's dolphin), up to 9.5 m (30 ft) and 10 tonnes (9.8 long tons; 11 short tons) (the orca or killer whale). They are found worldwide, mostly in the shallower seas of the continental shelves and are carnivores, eating mostly fish and squid. The family Delphinidae, the largest in the order Cetacea, evolved relatively recently, about ten million years ago during the Miocene.
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Humpback Whales, Humpback Whale Pictures, Humpback Whale Facts - National Geographic - 1 views

animals.nationalgeographic.com/...humpback-whale facts animals whales humpback
shared by carroll_beth on 03 Nov 14 - No Cached
  • Mothers and their young swim close together, often touching one another with their flippers with what appear to be gestures of affection. Females nurse their calves for almost a year, though it takes far longer than that for a humpback whale to reach full adulthood.
    • carroll_beth
      carroll_beth on 04 Nov 14
       
      Mother and baby humpback whales swim close to each other and touch each other frequently.  Scientists think that this is because they love each other and are showing that love to each other.  Babies drink their mother's milk for a whole year, and take a long time to grow up.
  • It is most likely that humpbacks sing to communicate with others and to attract potential mates.
  • t is most likely that humpbacks sing to communicate with others and to attract potential mates.
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hour (unit of time) -- Encyclopedia Britannica - 0 views

global.britannica.com/...hour hours 24 not 60
shared by marino5856 on 31 Oct 14 - No Cached
  • in timekeeping
  • 3,600 seconds, now defined in terms of radiation emitted from atoms of the element cesium under specified conditions. The hour was formerly defined as the 24th part of a mean solar day—i.e., of the average period of rotation of the Earth relative to the Sun. The hour of sidereal time, 1/24 of the Earth’s rotation period relative to the stars, was about 10 seconds shorter than the hour of mean solar time.
    • marino5856
      marino5856 on 05 Nov 14
       
      It also has 24 hours the earth because in the system of the egyptians it said that it also has 24 hours because of the earth spinning.
  • In even earlier systems of timekeeping, an hour was 1/12 of a period of daylight or darkness—hence, variable in length with seasonal changes in the length of day and night. The custom of dividing the cycle of day and night into 24 periods seems to have originated with the ancient Egyptians.
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My Library - 0 views

www.diigo.com/deleon6878 fish Facts
shared by deleon6878 on 31 Oct 14 - No Cached
  • For sharks and Rays this is not a problem as they do not have color vision anyway. The eyes of shallow water species are adapted to have a maximum sensitivity to light of around 500 nanometres, and the eyes of those species that live in deeper waters are adapted to 475-480 nanometres. Most Teleost fish however have color vision, and the eyes of the Trout (Onkorhynchus mykiss) have three sensitivity peaks at, 455, 530 and 625 nanometres.
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What Causes the Sky to Change Colors When the Sun Rises and Sets? | eHow - 0 views

www.ehow.com/nge-colors-sun-rises-sets.html sky kids
shared by guzman5860 on 31 Oct 14 - No Cached
  • During a sunrise, the sun is lower in the sky, which lengthens the angle at which light reaches the Earth. As a result, the shorter violet, blue and green light never reaches the eye, so only the yellow, orange and red light is visible. Because red has the longest wavelength, the first light of dawn often appears pink or red--depending on the particles in the atmosphere. As the sun moves further up the sky, the reds and yellows fade as the scattered blue light becomes more visible.
    • guzman5860
      guzman5860 on 07 Nov 14
       
      In the sunrise the sky is lower into the sky and the colors that are seen are only red orange and yellow because they have the longest wavelength and the ones with the shorter wavelengths don't reach your eyes until the sun moves up. And when the sky comes up the blue light comes more visible. Usually the first colors that are shown are red or pink depending on the particles of the atmosphere.
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Gender Focus | The History of Pink for Girls and Blue for Boys - 1 views

www.gender-focus.com/...pink-for-girls gender pink blue girls boys
shared by Nany Rocha on 31 Oct 14 - No Cached
  • But did you know that pink hasn’t always been a colour for girls, or blue for boys? In Michael Kimmel’s outstanding Manhood in America: A Cultural History, he points out that clothing wasn’t colour-coded in America until the early twentieth century, before which little boys and girls were dressed pretty much identically. Even when people started pushing for more gender-specific children’s clothing, there was a huge debate over which colour to assign to which gender. It started out with boys wearing pink or red because the colours were seen to indicate strength, while girls wore blue because they were “flighty” like the sky. From a 1918 editorial called “Pink or Blue” cited by Kimmel:
    • Nany Rocha
      Nany Rocha on 04 Nov 14
       
      Michael Kimmel pointed out that color coding wasn't used in the vintage america.In fact little boys and little girls used to dress up the same way.But then people wanted to make little kids use specific colored clothes.It started with boys wearing pink or red stuff because the colors where supposed to symbolize strength,while girls used blue because it was soft and dainty (Delicate).
  • So basically the colours changed based on which colour was seen to denote the strength of boys and delicacy of girls, but the idea that those traits are inborn and inalienable did not. It’s not just clothes: walk through the girls’ section of any Toys R Us and you’ll see shelf after shelf of pink, pink, pink. While little girls enjoy some leeway to play with blue toys, many boys get mocked if they want to play with pink “girls’ toys” and sometimes their parents and relatives start panicking that they might even grow up to be (gasp) gay. The fact that parents worry about the sexuality of their kids at all is crazy enough in itself, but that’s for another time. Back to colour-coding.
  • If you think boys and girls just forget about coding gender based on colour once they hit puberty, you’d be wrong. Maricopa County Sheriff Joe Arpaio made headlines when he started forcing male inmates to wear pink underwear to humiliate them. He says it’s a deterrent to reoffending because inmates don’t want to come back and be forced to wear pink again. How screwed up is it that we’ve given a colour so much meaning in less than 100 years that it would make grown male criminals tremble just to think about wearing it?
  • ...2 more annotations...
  • his is about more than policing convicts, it’s about policing the boundaries of masculinity and reinforcing homophobia. Kimmel states: “Homophobia is more than the irrational fear of homosexuals…[it] is the fear of other men – that other men will unmask us, emasculate us, reveal to us and the world that we do not measure up, are not real men.” The pink and blue shoe keychains might not seem like a big deal, and indeed most people don’t think twice about them. But imagine how much harder it could be for some trans and intersex people to negotiate a restroom ritual like this. Gender-neutral washrooms are a big step towards fixing this issue, but so is realizing that blue-pink colour coding is just the tip of the iceberg of things we use to arbitrarily divide “masculine” from “feminine”.
    • Nany Rocha
      Nany Rocha on 04 Nov 14
       
      Gender stereotypes are something that might not seem important,but actually it is a bit important because it kind of symbolizes what a girl or boy will or would use as clothes or other things.I really think that all this stereotypes are dum because it actually doesn't make sense.
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How Do Broken Bones Heal? - Health News and Views - Health.com - 0 views

news.health.com/...how-do-broken-bones-heal bones health
shared by garza6544 on 31 Oct 14 - No Cached
  • Bones are flexible enough to give a bit when physical force is applied, but if that force is too great, they’ll snap like a plastic ruler bent too far. Luckily, they also repair themselves naturally (even better with a cast). Here’s how bones heal. 1. Immediately after a fracture occurs, a blood clot and callus form around it. 2. New “threads” of bone cells start to grow on both sides of the fracture line toward one another. 3. Eventually, the fracture closes up and the callus is absorbed by the new cells. This process may take from six weeks to a year.
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How do fish breathe under water? | Ask.com - 0 views

www.ask.com/...e-under-water-ef265177bb1680b7
shared by deleon6878 on 31 Oct 14 - No Cached
  • The oxygen that fish and other animals with gills use is bonded to hydrogen molecules and is dissolved in the water.
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The Purpose of Crying - HowStuffWorks - 0 views

science.howstuffworks.com/...crying1.htm Crying works brain tears
shared by guzman5862 on 31 Oct 14 - No Cached
  • What happens when you cry, exactly? A salty fluid chock full of protein, water, mucus and oil is released from the lacrimal gland in the upper, outer region of your eye. This fluid, better known as tears, then flows down the surface of your eye, across your face and smears your mascara.
    • guzman5862
      guzman5862 on 04 Nov 14
       
      Why do people cry? A liquid full of protein, water, mucus and oil goes from the lacrimal gland in the back part of your eye and to the top outer part of your eye. 
  • The reasons for our crying changes as we grow from babies to adults. Learn more on the next page.
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4 Parasites That Want To Invade Your Brain | Popular Science - 0 views

www.popsci.com/...rasites-want-invade-your-brain Brain worm on humans
shared by CLudio Villarreal on 31 Oct 14 - No Cached
    • CLudio Villarreal
      CLudio Villarreal on 07 Nov 14
       
      Paradoxically, using drugs to kill off the Loa loa larvae can be dangerous, because when large numbers of the larvae die in and around the brain, they can block capillaries and cause encephalopathy, a condition that can cause cognitive losses, memory problems, personality changes, and more.GROSS OMG!
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'Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'an... - 0 views

www.dailymail.co.uk/...swimming--bird-excel-both.html penguins
shared by Eugenio Ferrara on 03 Nov 14 - No Cached
  • 'Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'and no bird can excel at both'
  • Eugenio Ferrara on 03 Nov 14
     
    Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'and no bird can excel at both'
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What Is Jupiter? | NASA - 0 views

www.nasa.gov/...what-is-jupiter-58.html jupiter
shared by Esteban Cantu on 03 Nov 14 - No Cached
  • Jupiter is like a star in composition. If Jupiter had been about 80 times more massive, it would have become a star rather than a planet.
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Venus -- Britannica School - 0 views

school.eb.com/...345007 Atmosphere of Venus
shared by Diego Hinojosa on 04 Nov 14 - No Cached
  • The second planet from the Sun is Venus. After the Moon, Venus is the most brilliant natural object in the nighttime sky. It is the closest planet to Earth, and it is also the most similar to Earth in size, mass, volume, and density. These similarities suggest that the two planets may have had similar histories. Scientists are thus intrigued by the question of why Venus and Earth are now so different.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Venus is the second closest planet to the sun.It is really similar to earth and also it is the planet most close to earth. The earth and venus are really similar on size and also atmosphere.
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Curious About Astronomy: Why is a day divided into 24 hours? - 0 views

curious.astro.cornell.edu/question.php Day divided into 24 hours
shared by marino5856 on 04 Nov 14 - Cached
  • December 2003 answer: It appears that the Egyptians were responsible for the 24 hour day. The Eqyptians were fond of counting in base twelve (instead of base 10 which is commonly used today). This is thought to be because they counted finger joints instead of fingers. Each of your fingers has three joints, so if you count by pointing to finger joints with your thumb you can count to twelve on each hand. This might seem arbitrary, but is actually just a strange as counting in base ten simply because we have ten digits.
    • marino5856
      marino5856 on 04 Nov 14
       
      The egyptians were the ones that were in charge of the 24 hours in a day because they had a system so they found  a counting base in twelve.
  • The Egyptians divided the clock into 12 hours of daytime and 12 hours of night-time (or alternatively 10 hours between sunrise and sunset, an hour for each twilight period and 12 hours of darkness). This is known because of various sundials from the period which have been found to be marked with hours. Interestingly this means that hours started out changing in length with the seasons (as the amount of daylight vs. darkness changes).
    • marino5856
      marino5856 on 04 Nov 14
       
      they divided the clock in 12 hours because 12 in the night and about 10 in the sunrise that it became 12hours so that it is equal.
    • marino5856
      marino5856 on 05 Nov 14
       
      The egyptians divided the clock into 12 hours. 1,2,3,4,5,6,7,8,9,10,11,12 a.m and 1.2.3.4.5.6.7.8.9.10.11.12 p.m so that all the p.m could see the stars and the a.m the sunrise. Like there are 12 a.m and 12 p.m so 12 plus 12 equals24 thats why we have 24 hours in a day.
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Uranus -- Britannica School - 0 views

school.eb.com/...339203 Atmosphere of Uranus
shared by Diego Hinojosa on 04 Nov 14 - No Cached
  • Uranus is the third largest planet in the solar system, after Jupiter and Saturn. Uranus is about four times bigger than Earth. Its diameter at the equator is about 31,763 miles (51,118 kilometers), as measured at the level of the atmosphere where the pressure is the same as at sea level on Earth. The planet is slightly larger than Neptune, but Neptune is about 1.2 times more massive. Uranus’ density is quite low—only about 1.3 times that of water, compared with 1.6 for Neptune and 5.5 for rocky Earth.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Uranus is the third biggest planet on the whole solar system it is four times bigger than earth and it has a ver massive atmosphere
    • Diego Hinojosa
      Diego Hinojosa on 06 Nov 14
       
      Uranus is one of the 3 other planets that is the biggest on the whole solar system.It has a very harsh atmosphere.And it has very little water.
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Neptune -- Britannica School - 0 views

school.eb.com/...345012 neptune Atmosphere
shared by Diego Hinojosa on 04 Nov 14 - No Cached
  • The planet that Voyager uncovered is a stormy, windswept world with a vivid blue hue. Its highly active atmosphere is surprising, since it receives so little sunlight to power its weather systems. Like the other giant outer planets, Neptune has no solid surface. It also has a system of rings and more than a dozen moons.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Neptune is a planet that has a lot of blue. It's atmosphere and also surface is not solid. It also has rings and like 12 moons.
  • Neptune is the smallest of the four giant outer planets. The diameter at its equator is about 30,775 miles (49,528 kilometers), as measured at a level of the atmosphere where the pressure is 1 bar (the pressure at sea level on Earth). This makes it slightly smaller than Uranus but nearly four times as big as Earth. Neptune’s mass is about 1.2 times greater than Uranus’, however, and more than 17 times greater than Earth’s. It is the third most massive planet in the solar system, after Jupiter and Saturn. Like the other outer planets, Neptune has a low density—only about 1.6 times the density of water. However, it is the densest of the four, being roughly 25 percent denser than Uranus.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Neptune is also the smallest planet of the biggest four. The atmosphere of neptune is really thick.Neptune is the most hard planet in other words solid planet and it is four times bigger than the earth.
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FYI: Why Does Some Food Taste Bad To Some People And Good To Others? | Popular Science - 1 views

www.popsci.com/...ad-some-people-and-good-others popular science taste
shared by Isabel Herrera on 04 Nov 14 - No Cached
  • ARE YOU A SUPERTASTER? To find out, put blue food coloring on your tongue. Blue dye doesn't stick to taste papillae, so if your tongue doesn't get very blue, you're probably a supertaster. The bluer it gets, the greater the chance you are a subtaster. More hot sauce!
    • Isabel Herrera
      Isabel Herrera on 04 Nov 14
       
      If you want to find out if you're a super taster, then simply put food coloring on you tongue. Let's say you put blue food coloring on you're tongue. Blue coloring does not stick to your papillae so if your tongue doesn't get very blue, then you're a super taster but if your tongue gets very blue the you're a sub taster.
  • People who have a lot of papillae—the bumps on our tongue, most of which house our taste buds—often find flavors overwhelming. They're "supertasters," and as such they add cream to their coffee and order food mild instead of spicy. Subtasters, on the other hand, have low papillae density and prefer their chicken wings "atomic."
    • Isabel Herrera
      Isabel Herrera on 04 Nov 14
       
      People who have a lot of papillae normally finds flavors to be a little bit to much, that shows that you're a super taster. But when you're a sub taster you have a very low amount of papillae.  
  • Most toxic plants taste bitter, and nomadic groups that came into contact with a variety of plants would have, over time, developed a variety of receptors. People from malaria-infested parts of the world tend to carry a gene that makes them less sensitive to some bitter compounds, specifically those that contain cyanide.
    • Isabel Herrera
      Isabel Herrera on 05 Nov 14
       
      People in the past, usually get to the point to eat poisonous food. But how will they know if it's poisonous??? Well once they taste it, they will find the taste very bitter. That would usually tell them that it's toxic.
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