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