Thursday, November 19, 2015

Sawfish

                           Sawfish
Sawfish        The sawfish or Pristidae is a crossbreed of a shark and a ray. Its rostrum, or saw-like snout is used to saw prey in half or to dig, there is two types of sawfish. The smalltooth sawfish, and the largetooth sawfish. 
        The smalltooth sawfish is about 18 feet, and can grow up to 25 feet. The sawfish also lives to 25-30 years old. They eat mostly fish, but also crustaceans and, Sawfish live in shallow, coastal waters.
       Instead of bones, sawfish have cartilaginous skeletons.
Unlike sharks, the sawfish has sandpaper like skin. 

My sources are HERE and HERE and HERE
          
         
         


Wednesday, November 18, 2015

Archimedes

                                          Archimedes 

        Archimedes is one of the greatest mathematicians, and scientist in the history of the world. His inventions and discoveries, have made big changes in the world. 
         Archimedes was born in 287 B.C at Syracuse, Sicily and lived to be 75 years old, he is the son of a successful Astronomer and Mathematician named Phidias. Part of his youth was spent time being educated in Alexandria, Egypt. Archimedes is most likely related to King Hireron II, but it was never really proven.
        Archimedes was best known for his discovery on relation between surface, and volume of a sphere, and the Archimedes screw. Archimedes inventions consist of the War Machine, Pulley System, Planetarium, Water Screw, and maybe the Water Organ             Sadly though, Archimedes died during the Second Pulnic War.

My sources are HERE, and HERE, and HERE       Archimedes of Syracuse