comets, meteor, and asteroids

Cards (19)

  • celestial visitors have captured the imagination of ancient civilizations. They have thought of bad omens or signs of great change or challenge such ad ishering disasters or wars.
  • Comets - made up of ice, rock, and cosmic dust. it follows an elliptical path
  • comets are found in Kuiper belt and Oort cloud
  • SHORT-TERM COMET - orbital period of less than 200 years. found in KUIPER BELT
  • LONG-TERM COMET - Orbital period of more than 200 years, found in the OORT CLOUD
  • PARTS OF A COMET -
    1. Nucleus
    2. Coma
    3. Ion tail
    4. Dust tail
  • Nucleus - composed of ice, rock and metal; frozen
  • Ion tail - composed of charged gases
  • Dust tail - composed of very small dust particles
  • coma - composed of water vapor, carbon dioxide, dust and ammonia
  • Meteors -
    1. meteoroid
    2. Meteors
    3. Meteorite
  • meteors - composed of Iron and nickel
  • meteoroids - any Natural solid object moving in space
  • meteors - enter the earths atmosphere, usually found in mesosphere
  • meteorite - landed and found in earths surface
  • Meteor colors -
    1. RED - Atmospheric nitrogen and oxygen
    2. ORANGE YELLOW - sodium
    3. YELLOW - iron
    4. BLUE GREEN - magnesium
    5. VIOLET - calcium
  • ASTEROIDS - some are called planetoids, solid, rocky-metallic, irregularly-shaped objects
  • ASTEROIDS - found beyond the asteroid belt, found along the Jupiters orbit
  • asteroids and its compositions -
    1. Carbonaceous (dark C) - Hydrogen
    2. Silicaceous (bright S) - Silicates of Iron and Magnesium
    3. Metallic (bright M) - Metallic Iron