Gravity
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Gravity

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Gravity Gravity Presentation Transcript

  • What is Gravity?• Gravity is the invisible force of attraction between every bit of matter in the universe.
  • Who did discover the Gravity?• The mathematician and physicist Sir Isaac Newton is said to have developed his ideas about gravity while sitting one day under an apple tree.
  • What is a Force?• A force makes something move, by pushing or pulling it. Gravity is an invisible force.
  • Does Gravity change?An object’s gravitational pull changeswith its mass and distance. Infact, gravity decrease precisely inproportion to its distance .
  • How does Gravity hold you down?The mutual gravitational attractionbetween the mass of your body and themass of the Earth pulls them together.
  • Why can you jump higher on the Moon?The Moon is much smaller than theEarth, so its gravity is much weaker.Astronauts weigh six times less on theMoon than they do on the Earth, and canjump much higher.
  • What’s the difference between mass and weight?• Mass is the amount of matter in a object. It is the same wherever you measure it, even on the Moon.• Weight is a measure of the force of gravity on a object. It varies according to where you measure it.
  • THANK YOU!