3.5.15

Gravity

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Gravity

Gravity is a force. Every object that has mass will exert an attractive pull on another object. Gravity was discovered by Issac Newton after he wondered how and why an apple fell from a tree.

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Isaac Newton

  • Isaac Newton was born on the 4th January 1643 in Lincolnshire, England.
    • He died on the 31st March 1727.
  • Around 1666, Newton discovered gravity when an apple fell to the ground.
  • The myth states the apple hit him on the head. But there is no evidence for this.
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Gravity

  • All objects have a gravitational “pull” towards the centre of an object.
  • Moons orbit planets due to gravity.
  • Planets orbit the sun due to gravity.
  • Gravity keeps us firmly on the Earth and not floating off into space.
  • The further you get from a body of mass, such as a planet, the weaker the gravity gets.
  • If gravity was too strong, we wouldn’t be able to walk. Our legs would be ‘stuck’ to the ground.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

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