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Tuesday, December 17, 2013

Isaac Newton

Hey guys i'm back with a new topic. Today i'll be talking about Isaac Newton and about his many discoveries and accomplishments. Isaac Newton was born on Christmas Day, 1642, at Woolsthorpe Manor in England. On some calendars, you might notice Isaac Newton's birthday to be on January 4th, 1643. That's because two different calendars were used at that time.
Isaac Newton was born without a father, because his father died three months before Isaac was born. Isaac's mother left him with his grandparents to deal with so she could go marry some old guy. When Isaac was 19 years old, his mother came back and asked him to take over Woolsthorpe and become a farmer, but Isaac's uncle helped convince Isaac's mother to let him attend Cambridge University. Isaac took a three day journey to Cambridge University, but when he got there he knew that the three day walk was worth it. We all know how Isaac Newton discovered the Laws of Motion, hopefully.
One of the laws of motion is that an object in motion tends to stay in motion.
 
 
Another one of the Laws of motion is that the sum of the forces on an object is equal to the total mass of that object. The last law of motion is when one body exerts a force onto a second body.
 
 
That's all for today people.

Sunday, December 8, 2013

Heat Transfer

Hey guys i'm back with a new topic. Today i'll be talking about heat and the details of what heat is and how it helps us all during our daily lives. First off, heat is the transfer of thermal energy from one object to another when the objects are at different temperatures. The amount of thermal energy that is transferred when two objects are brought into contact depends on the difference in temperature between the objects. Heat is important to us and our lives because it keeps us warm so we are able to live.
Heat is transferred in three ways. They are radiation, conduction, and convection. Radiation is when energy is transferred by electromagnetic waves. These waves carry energy through empty space, and also through matter. The transfer of thermal energy by radiation can occur in solids, liquids, and gases.
Conduction is when the particles in a material collide with other close particles. If you were to hold an ice cube in your hand, the faster-moving molecules in your hand bounce against the slower-moving molecules in the ice. The heat from your hand transfers to the colder ice, the molecules in the ice begin to move faster. As a result, the ice becomes warmer and its temperature rises. Finally, there is convection.
Convection is when thermal energy by the movement of atoms or molecules is transferred from one part of a material to another. When you heat a pot of water on a stove, thermal energy can be transferred through the water. Convection occurs in gases and liquids, not in solids.

That's all for today guys see you next time!

Friday, December 6, 2013

Lemons Sharks

Hey guys i'm back with a new topic. Today i'll be talking about lemon shark reproduction. I know it might seem a little weird but trust me it's normal. Reasearchers say that they have found the first direct evidence that female lemon sharks return to where they were born to breed.sharks
Even though lemon sharks are highly migratory, female lemon sharks prefer to go to where they were born themselves to breed. The researchers also stated that this should mean that fishing in specific places should be restricted. Not only has it been seen in lemon sharks, but it has also been seen in salmon and also sea turtles.
That's all for today guys see you next time.