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guzman5860

Getting Started with Chrome extension - Diigo help - 0 views

help.diigo.com/...tting-started-chrome-extension

Diigo Chrome

shared by guzman5860 on 31 Oct 14 - No Cached
  • Use the “Save” option to bookmark a page. Bookmarking saves a link to the page in your online Diigo library, allowing you to easily access it later.
  • Highlighting can also be accomplished from the context pop-up. After the Chrome extension is installed, whenever you select text on a webpage, the context pop-up will appear, allowing you to accomplish text-related annotation. Highlight Pop-up Menu – After you highlight some text, position your mouse cursor over it and the highlight pop-up menu will appear. The highlight pop-up menu allows you to add notes to, share, or delete the highlight.
  • Sticky Note Click the middle icon on the annotation toolbar to add a sticky note to the page. With a sticky note, you can write your thoughts anywhere on a web page.
marino5856

Clocks - How Time Works - 1 views

science.howstuffworks.com/...time2.htm

How does the clock works

shared by marino5856 on 31 Oct 14 - No Cached
  • A day consists of two 12-hour periods, for a total of 24 hours. An hour consists of 60 minutes. A minute consists of 60 seconds. Seconds are subdivided on a decimal system into things like "hundredths of a second" or "millionths of a second."
    • marino5856
      marino5856 on 04 Nov 14
       
      There is 24 hours in a day because  they first divided 60 and that equals 12. So 12 plus 12 equals 24 so thats how they had 24 hours in a day.
  • hat's a pretty bizarre way to divide a day up. We divide it in half, then divide the halves by twelfths, then divide the twelfths into sixtieths, then divide by 60 again, and then convert to a decimal system for the smallest increments. It's no wonder children have trouble learning how to tell time.
  • How long is a day? It's the amount of time it takes for the Earth to rotate one time on its axis. But how long does it take the Earth to rotate? That is where things become completely arbitrary. The world has decided to standardize on the following increments:
  • ...3 more annotations...
  • Why are there 24 hours in a day? No one really knows. However, the tradition goes back a long way. Take, for example, this quote from Encyclopedia Britannica:
  • Why are there 60 minutes in an hour and 60 seconds in a minute? Again, it is unclear. It is known, however, that Egyptians once used a calendar that had 12 30-day months, giving them 360 days. This is believed to be the reason why we now divide circles into 360 degrees. Dividing 360 by 6 gives you 60, and 60 is also a base number in the Babylonian math system.
    • marino5856
      marino5856 on 04 Nov 14
       
      The Egyptians had a calendar that has 12 months so that equals 360 day in total. Also science they new that there is 360 days in a year thats why a circle is 360 degrees. The Roman people invented that so that in the clock there is not 24 hours in a clock so there is 12 am and 12pm.
  • What do a.m. and p.m. mean? These abbreviations stand for ante meridiem, before midday, and post meridiem, after midday, and they are a Roman invention. According to Daniel Boorstin in his book The Discoverers, this simple division of the day into two parts was the Romans' first increment of time within a day:
morales5853

Animals & Habitats - 0 views

www3.canisius.edu/...SOFTCHALKGOOD_print.html

Animals Habitats Nature Surviving

shared by morales5853 on 06 Nov 14 - No Cached
  • Some animals eat plants or other animals for food and may also use plants for shelter and nesting.
  • A habitats is a place where living things live and how they survive in that area.
  • A habitats is a place where living things live and how they survive in that area.
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  • A habitats is a place where living things live and how they survive in that area.
  • A habitats is a place where living things live and how they survive in that area.
  • A habitats is a place where living things live and how they survive in that area.
    • morales5853
      morales5853 on 06 Nov 14
       
      Animals only live in the habitat they know they will survive in
  • Plants, animals, and even humans choose habitats for many different reasons, depending on their needs.
    • morales5853
      morales5853 on 06 Nov 14
       
      Living creatures and thing decide where to live in, all depending on what they think their needs would be. For example a human would like to be were there are jobs and markets where he can survive not in the middle of the desert where they can starve and die. 
garzat5774

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.
garza6544

How do broken bones heal? - HowStuffWorks - 0 views

health.howstuffworks.com/...heal-broken-bones.htm

bones howstuffworks

shared by garza6544 on 31 Oct 14 - No Cached
  • If you experience engine trouble, you take your car to a mechanic. If your pipes leak, you call a plumber. And if you fracture a leg, the usual course of action is to visit a doctor. But unlike other things that may break in life, bones begin healing on their own before you even set foot in a waiting room.The human body possesses amazing healing powers that enable it to bounce back from a vast array of illnesses and injuries. Sometimes broken bones can heal so thoroughly within a few months that even an x-ray can't determine the original fracture line.Doctors often play a vital, sometimes lifesaving, role in a bone's healing process. But, these experts basically help the body heal itself. Doctors provide optimal conditions for bone repair and healing to take place. The rest is up to your cells.But how does this amazing biological process work? How can a fractured limb grow back to its former strength? To understand, you first have to take a closer look at just what bones are made of and how alive they really are.
garza6544

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.
garzat5774

How birds fly | Sciencelearn Hub - 0 views

sciencelearn.org.nz/...How-birds-fly

birds

shared by garzat5774 on 03 Dec 14 - No Cached
  • Birds have many physical features, besides wings, that work together to enable them to fly. They need lightweight, streamlined, rigid structures for flight. The four forces of flight – weight, lift, drag and thrust – affect the flight of birds.
  • Flying birds have: lightweight, smooth feathers – this reduces the forces of weight and drag a beak, instead of heavy, bony jaws and teeth – this reduces the force of weight an enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust light bones – a bird’s bones are basically hollow with air sacs and thin, tiny cross pieces to make bones stronger – this reduces the force of weight a rigid skeleton to provide firm attachments for powerful flight muscles – this helps with the force of thrust a streamlined body – this helps reduce the force of drag wings – these enable the force of lift.
  • WingsThe shape of a bird’s wing is important for producing lift. The increased speed over a curved, larger wing area creates a longer path of air. This means the air is moving more quickly over the top surface of the wing, reducing air pressure on the top of the wing and creating lift. Also, the angle of the wing (tilted) deflects air downwards, causing a reaction force in the opposite direction and creating lift.Larger wings produce greater lift than smaller wings. So smaller-winged birds (and planes) need to fly faster to maintain the same lift as those with larger wings.Wing loading tells you how fast a bird or plane must fly to be able to maintain lift: wing loading = weight/wing area (kilograms per square metre).A smaller wing loading number means the bird/plane can fly more slowly while still maintaining lift and is more manoeuvrable.
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  • GlidingWhen a bird is gliding, it doesn’t have to do any work. The wings are held out to the side of the body and do not flap. As the wings move through the air, they are held at a slight angle, which deflects the air downwards and causes a reaction in the opposite direction, which is lift. But there is also drag (air resistance) on the bird’s body, so every now and then, the bird has to tilt forward and go into a slight dive so that it can maintain forward speed.
  • SoaringSoaring flight is a special kind of glide in which the bird flies in a rising air current (called a thermal). Because the air is rising, the bird can maintain its height relative to the ground. The albatross uses this type of soaring to support its multi-year voyages at sea.
  • FlappingBirds’ wings flap with an up-and-down motion. This propels them forward. The entire wingspan has to be at the right angle of attack, which means the wings have to twist (and do so automatically) with each downward stroke to keep aligned with the direction of travel.
  • Birds obtain thrust by using their strong muscles and flapping their wings. Some birds may use gravity (for example, jumping from a tree) to give them forward thrust for flight. Others may use a running take-off from the ground.
  • Different birds have different adaptive features to meet their flight needs: Some birds are small and can manipulate their wings and tail to manoeuvre easily, such as the fantail (pīwakawaka). The hawk, with its large wingspan, is capable of speed and soaring. Gannets and seabirds are streamlined to dive at high speeds into the ocean for fish. Godwits, although small, are equipped to fly long distances.
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds have some chacteristics that help them fly, birds are light weighted they have light feathers insted of heavy ones that add more weight to their bodys, they also have a beak insted of jaws that also add weight to their boddys, thay have hollow bones in their body that means that the bone has nothing inside it
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds get ready to fly by flapping their wings, some birds use "gravity" to take of some run and they jump just like an airplane and others jump from a tree and then start flapping their winds
marchand5892

How does the normal heart work? - 0 views

www.heartfailurematters.org/...How-does-the-normal-heart-work

Normal Heart

shared by marchand5892 on 31 Oct 14 - No Cached
  • Your heart is a specialised muscle that pumps blood around your body. Blood carries oxygen and nourishment to all parts of your body and carries waste products to several organs, notably your lungs and kidneys to eliminate. Your heart is divided into two pumps which work together. Blood coming back from the organs and tissues of your body enters the right side of your heart which then pumps it to your lungs. Your lungs remove waste carbon dioxide from the blood and recharge it with oxygen. The oxygen-rich blood returning from your lungs enters the left side of your heart, which then pumps it to all parts of your body, including your heart muscle itself. This process ensures that there is always enough oxygen and nourishment for your body to work efficiently.
  • t is a specialised muscle that pumps blood around your body. Blood carries oxygen and nourishment to all parts of your body and carries waste products to seve
  • Your heart is a specialised muscle that pumps blood around your body. Blood carries oxygen and nourishment to all parts of your body and carries waste products to several organs, notably your lungs and kidneys to eliminate.
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    • marchand5892
      marchand5892 on 04 Nov 14
       
      Everyone's heart is a special muscle, that "pumps around your body" and pumps blood out." The blood gets pushed and picks up the oxygen and the the blood travels through your body and drops the oxygen for the heart to circulate  
Isabel Herrera

Tongue and Taste - How it works. - 1 views

www.wegottaste.com/tongue-and-taste.html

tongue taste works

shared by Isabel Herrera on 04 Nov 14 - No Cached
  •  The tongue is basically a muscle. This muscle helps the digestive process by doing several things: Move food to the teeth for chewing. Mix saliva into the food. Move food to the back of the mouth for swallowing.
    • Isabel Herrera
      Isabel Herrera on 04 Nov 14
       
      The tongue is a very strong muscle that helps the digestive process by helping the food mix with the saliva, also for the food to go to the back of the mouth for swallowing, and finally it helps the food go to your teeth for you to chew easily. 
  • As mentioned above, the tongue mixes the food with saliva. As the saliva mixes it is also spreading the solutions and chemicals from the food into the grooves between the papillae on the tongue. The taste buds are located on the papillae and the taste receptors respond to the chemicals from the food. When triggered, the receptors send impulses along the nerves in the tongue up to the brain for processing.
    • Isabel Herrera
      Isabel Herrera on 04 Nov 14
       
      The tongue helps the food mix with your saliva, but when it starts mixing it sends food chemicals to the cuts on your papillae. The taste buds are in the papillae and the taste receptors respond to the chemicals of the food. When that happens the brain gets signals of how the food tastes like.
mijares5812

How planes work | the science of flight - Explain that Stuff - 0 views

www.explainthatstuff.com/howplaneswork.html

flight science planes stuff

shared by mijares5812 on 31 Oct 14 - No Cached
  • If you've ever watched a jet plane taking off or coming in to land, the first thing you'll have noticed is the noise of the engines. Jet engines, which are long metal tubes burning a continuous rush of fuel and air, are far noisier (and far more powerful) than traditional propeller engines. You might think engines are the key to making a plane fly, but you'd be wrong. Things can fly quite happily without engines, as gliders (planes with no engines), paper planes, and indeed gliding birds readily show us.
    • mijares5812
      mijares5812 on 04 Nov 14
       
      when your on a plane and you hear the engine you big and powerful the only way that  we fly well... no a bunch of other types of planes fly without engines Gliders that have no engine and birds they are no machine they just glide
    • mijares5812
      mijares5812 on 04 Nov 14
       
      the real ways airplanes fly are thanks to the 4 forces the lift from the wings the thrust from the engines the gravity and the drag which  drag the plane to a certain direction
Nany Rocha

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.
Eugenio Ferrara

How Sugar Hijacks Your Brain And Makes You Addicted - 0 views

authoritynutrition.com/how-sugar-makes-you-addicted

sugar

shared by Eugenio Ferrara on 31 Oct 14 - No Cached
  • When we eat foods that contain a lot of sugar, a massive amount of dopamine is released in an area of the brain called the Nucleus Accumbens.
morales5853

Why do animals live in certain places? - 0 views

www.factmonster.com/...A0768522.html

Animals Habitats Home

shared by morales5853 on 31 Oct 14 - No Cached
  • Animals live only where they can survive. Koalas, for example, eat only the leaves of certain eucalyptus trees, so they must live in Australia, where these trees grow.
    • morales5853
      morales5853 on 04 Nov 14
       
      A animal may only live were he is used to and where he knows how to survive its like if a polar bear suddenly appeared in the desert, he wouldn't survive because he is not used to the environment and doesn't know what to eat.
    • morales5853
      morales5853 on 05 Nov 14
       
      Animals only live were they are really adapted to because there is were they already know how to live and they know which animals to get away from and what to eat.
  • Highlighter
morales5853

The Mariners' Museum | EXPLORATION through the AGES - 0 views

ageofex.marinersmuseum.org/index.php

shared by morales5853 on 18 Dec 14 - No Cached
  • Lead Line
    • morales5853
      morales5853 on 18 Dec 14
       
      The lead line was a tool used for measuring the speed a boat was going. This tool worked by a long rope that had many knots made on it and a man garbed it and checked how many knots fell overboard and how fast.
lobo5879

How Sleep Works. Sleep for Kids - Teaching Kids the Importance of Sleep - 0 views

www.sleepforkids.org/...how.html

sleep works kids

shared by lobo5879 on 07 Nov 14 - No Cached
  • You spend the day running on the playground, learning at school, eating meals, and at night your body and brain get to rest, right? Wrong! In fact, while you are off in dreamland, your body and brain are very busy getting ready for a new day. That is why it is so important to give yourself time to sleep.
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