8. space physics

Subdecks (2)

Cards (53)

  • our star is called the sun
  • the planets in the solar system go in the order Mercury Venus Earth Mars Jupiter Saturn Uranus
  • the asteroid belt is in between Mars and Jupiter
  • Jupiter has 16 moons
  • Saturn has rings made out of rock and dust
  • Pluto is a dwarf planet
  • gravity between two planets depends on the mass of the planets and their seperation
  • weight = mass x gravitational strength
  • the seasons variate throughout the year from Earth being tilted on its axis
  • daylight hours , temperature , suns height in sky at midday are all affected by the Earths axis
  • Earth tilted towards the sun --> summer
  • equinox --> 12 hours day and night
  • lightyear is the distance travelled by light per year
  • a nebula is a huge cloud of hydrogen gas and dust
  • a protostar is when a nebula has collected into a sphere
  • a main sequence star is a star that has started nuclear fusion
  • a red giant is the size of the sun
  • a red super giant is a high mass star
  • a red giant turns into a white dwarf then a black dwarf
  • a red supergiant explodes in a supernova explosion
  • a supernova turns into a neutron star or a black hole
  • the bigger a star is the hotter it's core , hydrogen turns to helium faster , heavier nucleii can be formed by fusion , less tume is spent as a main sequence star