Q#2-Minor members of the Solar system

Cards (60)

  • What recent advances have allowed scientists to study near-Earth objects?
    Advances in space technology
  • What are examples of near-Earth objects studied by scientists?
    Comets and asteroids
  • What do comets and asteroids provide clues about?
    The origins of our solar system
  • How long have people been aware of comets?
    Since ancient times
  • What did some people historically believe about comets?
    They brought bad luck
  • What is a comet described as?
    A fuzzy luminous big snowball
  • What happens to a comet as it approaches the sun?
    It loses some of its material
  • What is the relationship between a comet's orbit and its visibility?
    It becomes visible as it approaches the sun
  • What is the nucleus of a comet made of?
    Frozen water
  • What is the tail of a comet formed from?
    Gas blown by solar wind
  • How long can a comet's tail reach?
    Up to 150 million kilometers
  • Where do most comets originate from?
    A huge cloud called the Oort cloud
  • What hypothesis exists regarding comets and the extinction of dinosaurs?
    A comet or asteroid may have crashed into Earth
  • What is a meteor also called?
    A falling star or shooting star
  • What happens when a meteoroid enters Earth's atmosphere?
    It burns up and creates a meteor
  • What causes a meteor to glow as it travels through the atmosphere?
    Friction with atmospheric gas molecules
  • What colors can meteors produce based on their composition?
    Various hues depending on chemical composition
  • What are meteoroids?
    Objects in space from dust to small asteroids
  • What happens to a meteorite after it survives atmospheric entry?
    It hits the ground
  • How many meteors enter Earth's atmosphere daily?
    Millions
  • What is the size range of meteors?
    Size of pebbles to baseballs
  • When were meteors believed to be from our solar system?
    Since 1833
  • What are asteroids described as?
    Rocky or metallic objects orbiting the sun
  • Why are asteroids hard to see?
    They reflect little light
  • What is the largest asteroid classified as?

    A dwarf planet
  • Where do many asteroids orbit the sun?
    In the asteroid belt between Mars and Jupiter
  • What role does Jupiter play in asteroid orbits?
    It pulls asteroids outward
  • What are the differences between comets, asteroids, and meteors?
    • Comets: Ice and dust, have tails
    • Asteroids: Rocky/metallic, no tails
    • Meteors: Streaks of light from meteoroids
  • What are the three parts of a comet?

    Nucleus, head, and tail
  • What happens when a meteoroid burns up in the atmosphere?
    It creates a streak of light
  • How do comets, asteroids, and meteors relate to each other?
    They are all celestial objects orbiting the sun
  • What are the three main types of celestial bodies discussed?
    Comets, meteors, and asteroids
  • How many planets are in the solar system?
    Eight planets
  • What is a comet often referred to as?
    A dirty snowball
  • What are the three main parts of a comet?
    Nucleus, coma, and tail
  • What happens to the nucleus of a comet as it approaches the Sun?
    It vaporizes and forms a coma
  • Where do comets originate from in the solar system?
    Oort cloud and Kuiper belt
  • What is the Oort cloud?
    A spherical cloud of comets
  • What is the Kuiper belt composed of?
    Comets, minor planets, and other bodies
  • What are meteors commonly known as?
    Shooting stars