physics

• Planets visible to the naked eye

  • Venus
  • Jupiter
  • Saturn
  • Mercury
  • Mars
• Center of the solar system

  The sun
• Orbiting


  When planets have an elliptical rather than circular motion around the sun (a closed path)
• The laws of Kepler
• Venus


  • Has a dense atmosphere
  • Is similar in size and mass to the Earth
  • Only about 2% of sunlight reaches the planet
• Great red spot


  Storm 2 times bigger than earth in Jupiter (hurricane)
• Tallest mountain in the solar system

  Mount Olympus
• Inner planets


  Terrestrial planets because they are made of mostly metal and have rocky surfaces
• Outer planets


  Gas giants
• Purpose of the earth's atmosphere

  It provides a greenhouse effect which gives regular temperatures, protects life from intense solar radiation and balances the temperatures
• Gas giants


  • Their rings (terrestrial planets don't have rings)
• Physicist of the 17th century who determined that the solar system is maintained by gravity

  Isaac Newton
• The first law of Kepler states that the shape of the planets orbits as they move around the sun are elliptical rather than circular
• Theory that states the solar system was made by dust and gas

  Big Bang Theory
• Nebular hypothesis or theory

  Possible explanation for how the Sun, the Earth, and the rest of the solar system formed approximately 4.6 billion years ago
• What comets form from

  Dust, rock particles, frozen water, methane and ammonia formed in the Oort cloud
• According to astronomers, the moon formed by a piece of the earth breaking
• What maintains the planets around the sun without crashing

  The gases the orbit of the sun
• What would happen to the earth without the sun's gravity

  It would be destructed including the other planets
• How many times bigger is the sun compared to the earth

  1 Billion
• Nicolas Copernicus model


  Heliocentric, meaning that the planets revolve around the sun
• Exoplanets have been discovered
• Order of the planets

  • Mercury
  • Venus
  • Earth
  • Mars
  • Jupiter
  • Saturn
  • Uranus
  • Neptune
• Characteristics of the earth that allow life as we know it

  • Its distance from the sun
  • Atmosphere
• Distance between the moon and earth

  384,400 km
• Age of our solar system

  About 4.6 billion