Sir Isaac Newton
Most Influential Scientist of His Time
3 laws of motion
2nd law: Force=Mass X Acceleration
3rd law: for every action there is an equal and opposite reaction
"Achievements in brief"
- Showed that sunlight is made up of all the colors of the rainbow. He used a glass prism to split a beam of sunlight into its separate colors, then another prism to recombine the rainbow colors to make a beam of white light again.
- He built the first reflecting telescope.
- Wrote the Principia, one of the most important scientific books ever written; in it he used mathematics to explain gravity and motion. (Principia is pronounced with a hard c.)
- He discovered the law of universal gravitation, proving that the force holding the moon in orbit around the earth is the same force that causes an apple to fall from a tree.
- Formulated his three laws of motion – Newton’s Laws – which lie at the heart of the science of movement.
- Showed that the tides are caused by gravitational interactions between the earth, the moon, and the sun.
- Predicted, correctly, that the earth is not perfectly spherical but is squashed into an oblate spheroid, larger around the equator than around the poles.
in formation from http://www.famousscientists.org/isaac-newton/
Sir Isaac Newton and Gravity
I have an activity about gravity and density to share with you guys.
I would like for you to create the Pom-Pom-Drop like the picture in groups.
What happens to objects when we let go of them?
Let's test our Pom-Pom Drop with balls of different sizes and densities.
What will happen when we let go of the heavier, more dense balls?
What will happen when we let of the lighter, less dense balls?