Viscosity

           Viscosity is a measure of a fluid's resistance to flow. Vicosity is the condition or property of being viscous. This means that the thicker the fluid, the higher viscosity it has. Suppose you are pouring out syrup from a cup. The syrup would take awhile to come out of the cup because it is so thick. If you poured out water, it would go much faster because it is so much thinner. 

           We did a lab where we tested the viscosity of different liquids. We would drop a marble down in a tube filled with the liquid. The longer it would take to fall, the higher viscosity it had. It was interesting to see that the most viscous liquid was hair gel and the least viscous was rubbing alchohol. You can use whatever liquids you would like, but it is interesting to see how high a viscosity the things you use every day are!

           The temperature of the liquid changes the viscosity. If the temperature increases, the viscosity usually decreases. If the temperature decreases, the viscosity will increase. The viscosity also depends of the composition, size, and shape. The viscosity changes with the kinetic energy of the molecules, which depend on the temperature. This all being said, the viscosity of a liquid can change, if it is heated or altered.

            Viscosity describes the internal friction of a liquid. A liquid with a high viscosty resists motion because its molecular makeup gives it a lot of internal friction. A liquid with a low viscosity flows easily because its molecular makeup results in very little friction when it is in motion.

You can tell in the honey that it has a high viscosity because it is thicker and is more viscous.

You can tell in the water that it has a lower viscosity because it is thinner and is less viscous. 

Work Cited (3 websites):

"DEFINITION OF VISCOSITY." Princeton University. N.p., n.d. Web. 26 Jan. 2014. <http://www.princeton.edu/~gasdyn/Research/T-C_Research_Folder/Viscosity_def.html>.

"Viscosity." Viscosity. N.p., n.d. Web. 26 Jan. 2014. <http://www.chem.purdue.edu/gchelp/liquids/viscosity.html>.

"Viscosity." The Free Dictionary. Farlex, n.d. Web. 29 Jan. 2014. <http://www.thefreedictionary.com/viscosity>.

Flu - The New Deadly Bug

    

         Have you heard the new sad stories of someone dying of the flu? Yes, it is the flu season again. If you did not know the long word for flu is influenza. The flu is an infectionn on your nose, throat, and lungs. You can get the flu by inhaling tiny droplets of liquid when someone with the flu coughs or sneezes. You could also get it if you touch something that has the virus on it, then touch your mouth, eyes, or nose. The first trigger of the flu is with a high fever. Other symptoms include dizziness, chills, nausea or vomiting, flushed face, body aches, headaches, or lack of energy. Those symptoms usually go away within 2-4 days and new ones come in. Such as a dry cough, increased breathing symptoms, runny nose, sneezing, and a sore throat. If you think you have the flu, go to the doctor and get checked out. To lower the fever, you may use tylenol, motrin, or advil, unless told otherwise. You should be getting lots of rest with a lot of liquids to keep you hydrated and rested. Do not forget that you can try to prevent the flu by getting yourself a flu shot. In some cases it does not work, but it never hurts to help your body fight it! If you go to your local doctor's office or a Walgreens or CVS they have vaccinations, and you can pick (at most places) either the shot in your arm or a mist up your nose. The highest peaks of the flu usually appear in the fall and January to February. 

         There are mulitple different types of the flu. You can get swine flu, influenza A, & influenza B. Go to a doctor if you think you have any of these symptoms. The flu can be a serious illness that kills many people per year. Get your vaccination and make sure your friends and family get it too.

Information From:

Paragraph Information From:

Board, A.D.A.M. Editorial. Flu. U.S. National Library of Medicine, 11 Apr. 2012. Web. 13 Jan. 2014. <http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001144/>.

Picture 1 From:

    http://commons.wikimedia.org/wiki/File:EM_of_influenza_virus.jpg

    Picture 2 From:

    http://en.wikipedia.org/wiki/Influenza

The Milky Way

          The Milky Way is a popular galaxy in our universe. Did you know that there are actually billions of galaxies in our universe as well? The Milky Way comes from the translation of the Latin words "Via Lactea", which comes from the Greek words "Kiklios Galaxious" which translates as milky circle. The Greek myth on how it was created started when Zues was bringing baby Heracles to his mother to be fed, and the Milky Way was simply spilled milk. Scientists believe the Milky Way to be about 800 million to 13.5 billion years old. Can you imagine being that old and looking so great? The diameter of the Milky Way galaxy range is about 100,000 to 120,000 light years. Astronomers have used Kepler's 3rd Law to study the mass of the galaxy. Kepler's 3rd Law relates orbit radius and period with central mass. When you take the radius of our orbit with the center of the galaxy and the time it takes to complete one orbit you can plug in those facts to Kepler's 3rd Law. You would get about 750 billion to 1 trillion solar masses. As you can tell, the galaxy is very big, in fact there are about 100 billion stars in the galaxy. Even though the Milky Way is GIANT, there are still other galaxies out there that we may not be able to see that are EVEN BIGGER!

           An overview of the Milky Way

          A side view of the Milky Way

Information & Pictures from:

"The Milky Way Galaxy." The Milky Way Galaxy. N.p., n.d. Web. 07 Jan. 2014. <http://www.astrodigital.org/astronomy/milkywaygalaxy.html>.