The Universe and the Solar System

Cards (44)

  • formation of the universe
    big bang theory
  • formation of the solar system
    nebular hypothesis
  • who proposed the big bang theory
    georges lemaitre
  • where did georges lemaitre originated
    belgian
  • justified
    Lemaitre’s theory through
    observations that the universe
    is continuously expanding and
    moving away from each other
    Edwin Hubble
  • evidences of the big bang theory
    redshift
    abundance of h and he
    cosmic microwave background radiation
  • kelvin of the cmn
    2.725 K
  • how is the age of the universe measured?
    the speed of the expansion
  • view that the universe is always expanding but maintaining a constant average density,
    steady-state theory
  • who proposed nebular hypothesis
    immanuel kant
    pierre simon laplace
  • composition of the sun
    hydrogen
  • sun's center became compressed enough to initate what?
    nuclear reactions
  • what star is the sun
    middle-aged start (yellow dwarf)
  • composition depended
    on the distance from
    the sun
  • .
    A) high
    B) low
  • planets closer to the sun
    terrestrial planets
  • least explored terrestrial planet
    mercury
  • hottest planet due to greenhouse effect
    venus
  • only known planet with life
    earth
  • why is mars red?
    oxidized iron
  • this is a high pressure region producing anticyclonic storm
    great red spot
  • most complex ring system in the system
    saturn
  • most extreme seasons due to its unique tilt
    uranus
  • aka ice giant
    neptune
  • earth's direction of rotation
    counterclockwise
  • what is the first most massive known dward planet?
    eris
  • what direction of rotation does venus do

    retrograde
  • bodies of rock and
    metal ranging from meters to
    kilometers in diameter
    asteroids
  • orbits the sun like
    asteroids but made of ice
    and dust, not rocks
    comets
  • .
    A) gravity (accretion)
    B) heated (heating)
    C) differentiation
  • consequesnce of the ehating and differentiation of the earth
    formation of atmosphere
    formation of ocenas
    life starts due to the appearance of the blue-green algae
  • Earth’s only natural satellite
    Moon
  • sibling planet that collided with earth
    theia
  • Early Earth history is marked by
    heavy bombardment
  • Collision traces can be found in
    mercury
    mars
  • shape of the earth
    oblate spheroid
  • Eratosthenes accurately
    measured the Earth’s
    circumference by measuring
    the angle of the sun’s
    shadow and distance
    between two cities of Alexandria and Syene
  • • the cumulative
    height (elevation)
    frequency curve of
    the earth
    HYPSOMETRIC
    CURVE
  • how does venus rotate?
    retrograde direction
  • bodies f rock and metal
    asteroids