Study

Space

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  • What are the name of the 2 solar system models
    geocentric and heliocentric
  • An alien on Mars has a mass of 7kg and a gravity of 4m/s2 what is the weight of the alien?
    28N
  • What causes seasons?
    The tilt of the earth as it rotates around the sun
  • What is a year? (definition)
    How long it takes a planet to go around a star (sun)
  • Which planet would have a shorter year than Earth and why?
    mercury/venus (closer to the sun than earth)
  • weight is a force that always acts
    down
  • What is gravity on Jupiter if mass is 10kg and weight is 45N
    4.5
  • If I moved to a different planet what would stay the same?
    mass
  • What is the difference between a black hole and neutron star?
    Black hole is from biggest stars, absorbs everything. Neutron star is the smallest densest star to exist
  • Whether the star is a big star or a small star, they all start of being...
    A protostar and then main sequence star
  • How many planets are there in our solar system
    8
  • Why is the temperature on Jupiter different from Earth's?
    It is further away so therefore colder
  • How many days is a year on Earth?
    365 1/4 days
  • What is Nuclear fusion?
    When Hydrogen joints with Hydrogen to form Helium
  • state life cycle of a small star
    protostar, main sequence, red giant, white dwarf and black dwarf
  • What is the differences between heliocentric and geocentric models of our solar system?
    Heliocentric has sun at centre, has sun bigger than planets and has all the planets in the correct order. Geocentric had earth in middle, sun rotated earth
  • If I moved to a different planet what wouldn't stay the same and why
    weight- gravity would change
  • Weight is a force measured in
    Newtons
  • Put these in order of biggest to smallest: Planet, moon, star, Universe, solar system and galaxy
    moon, planet, star, solar system, galaxy and universe
  • Mass is measured in
    kilograms (kg)
  • How many hours is 1 day?
    24 hours
  • Gravity on earth is always
    10