Things in the Universe are always moving!But what gets the ball rolling so to speak?
It took the likes of a very intelligentperson to figure out the solution to this problem.• This happened hundreds of years ago in England.• During the time span of 1642-1727 an English physicist and mathematician named “Sir Isaac Newton” made some of the most incredible discoveries of the day.• This time span is also called the “Renaissance,” or “Re-Birth.” – This is because the entire European continent was coming out of a time period called the “DARK AGES.”
What were the DARK AGES?• The so-called dark ages were a period of time where most aspects of life in Europe were pretty bad. – There were very little cultural, social, economic, art, and medical advances made • The time era was portrayed as being very sullen or depressing. – The people were all said to be in a “very bad mood”.• A lot of this can be attributed to a “Pandemic” that occurred during this time called the “BLACK DEATH.” – The Black Death is now commonly known as the “Bubonic Plague.” • It is still around today but you don’t hear about it much because of the advances of medical science. – The Black Death was an incurable disease that was very contagious. • It is caused by a Bacteria carried by fleas. • The fleas bit an infected rat and then carried the disease to a person where they too were bitten and contracted the illness.
You see people didn’t make theconnection between the rats, fleas, and people.• They continued to live in squalor. – The filth that surrounded them provided a great place for the rats to thrive, and the fleas as well. • As long as this trash was there, so was the disease!• Bubonic Plague kills by destroying your lymphatic system. – Which is important because it filters the “nasties” out of your blood.• It forms a “Pus-Filled” blister that is filled with the bacteria that causes the disease. – It erupts and spreads the bacteria, and thus the disease.
There is a Children’s Nursery Rhyme that was written during this time.• Ring around the Rosey. – This was one of the symptoms of the plague. • A white ring around an inflamed red swelling that looked almost like a pimple.• Pockets full of Poseys. – People carried flowers with them to hold under their noses to overcome the powerful stench that was found around all of the dead bodies. • That and the fact that they thought that the disease was transmitted by the smell.• Ashes, Ashes. – There were so many bodies to bury that they couldn’t keep up so they burned them.• We all fall down! – Almost everyone that contracted the disease died!
Here are some more odd facts about the “Plague.”• Death from the plague was horrible, but swift. Victims often “ate lunch with their friends, and ate dinner with their ancestors in paradise.”• The first signs were generally aching limbs, and vomiting of blood. Then the lymph nodes would begin to swell. The lymph nodes are glands found in the neck, armpits, and groin. The swelling continued for three or four days until the lymph nodes burst. The swiftness of the disease, the enormous pain, the grotesque appearance of the victims, all served to make the plague especially horrifying.• Some Europeans believed the plague was a sign from God. Groups known as flagellants tried to atone for the sins of the world by inflicting punishments upon themselves.
And who could forget MontyPython’s famous “Bring Out Your Dead Sketch.”
But enough about that!• Back to Sir Isaac Newton! – Sir Isaac Newton discovered one of the most important relationships in physics: • The link between the force on an object, its mass, and its acceleration. – Before the age of 30 he formulated the basics laws of mechanics, discovered the universal law of gravitation, and invented calculus. – His discoveries helped to explain many unanswered questions. • How do the planets move? • What causes tides? • Why doesn’t the moon fall to the Earth like other objects do?
Sir Isaac Newton’s three (3) Laws of Physics The First Law of Motion• An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion will continue with constant speed and direction, unless acted on by an unbalanced force.• Or in other words…….. – Unless you apply some force, things tend to keep on doing what they were doing in the first place.
These are some examples of Newton’s First Law of Motion.• Objects in motion tend to stay in motion, while objects at rest tend to stay at rest.
The Second Law of Motion• The acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass.• Or in other words…….. – Force causes an object to accelerate while the object’s mass resists acceleration.
These are some examples of Newton’s Second Law of Motion.• A force is needed in order to get an object to accelerate• The bigger the mass the bigger the force needed• 2nd Law Animation
The Third Law of Motion• Whenever one object exerts a force on another, the second object exerts an equal and opposite force on the first.• Or in other words…… – For every action, there is an equal and opposite reaction. If you push on the wall, you feel the wall pushing back on your hand.
These are some examples of Newton’s Third Law of Motion.• For every action there is an equal, but opposite reaction.• Shuttle Docking Game
Chapter 3 Vocab Poster• Include: – The word – correct definition – picture that represents it. Words: air friction, equilibrium, force, friction, gravity, inertia, mass, momentum, newton, Newton’s first law of motion, Newton’s second law of motion, Newton’s third law of motion, weight, pounds.