Space

    Cards (6)

    • Explain the life cycle of a star the same size to the sun
      1)nebula( cloud of dust particles attracted by gravity)
      2)due to fusion a proto star forms
      3)Due to pressure from fusion balanced with gravitational pull a main sequence star forms
      4)A red giant forms
      5)When the fuel runs out a white dwarf form
      6)once cooled a black dwarf forms.
    • Explain the life cycle of a star which is bigger than the sun
      1)nebula( cloud of dust particles attracted by gravity)2)due to fusion a proto star forms
      3)Due to pressure from fusion balanced with gravitational pull a main sequence star forms
      4)A super red giant forms (bigger than the sun)
      5)A supernova forms when a star is larger than our sun and it produces heavy elements and a new nebula.
      6)A neutron star - very dense or a black hole forms that is so dense that gravity is so strong so not even light escapes
    • Explain orbits
      They are circular and the speed is constant but the velocity is always changing due to the direction changing.
      uses- GPS, TV
    • Red-shift occurs because the light ====== by an object moving away from us will be====. The stretching causes the light's wavelength to =====. The faster an object moves away from us, the larger the red shift.

      emitted, stretched, increase
    • Which is the correct explanation for why galaxies are moving away from each other?
      Space and the universe itself is expanding and this makes galaxies further apart
    • What is the basic idea of the Big Bang theory?
      The Universe expanded from a single tiny point of high density and pressure
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