Stars And Planets Flashcards
What galaxy is our solar system in
The milky way
How many planet are in our solar system
8 (+dwarf planets)
What do the planets in our solar system orbit around?
The sun (which is a star)
What type of force pulled together the cloud of dust and gas to form the sun
gravitational force of attraction
what would you call a cloud of dust and gas
a nebula
what type of reactions take place at the start of a star’s life cycle as dust and gas is drawn together
a fusion reaction
what factor determines the type of lifecycle a star undergoes
the size(and therefore mass) of the star
what 2 phases do all stars of the same/ greater size than the sun undergo?
- protostar
- main sequence phase.
what do stars like the sun become at the end of their life cycle
a black dwarf
what can stars (bigger than the sun) become at the end of their lifecycle
- neutron star
- Black hole
what two states do stars (like the sun) experience between being a general star and a black dwarf
- red giant
- red dwarf
what two states do stars (bigger than the sun) experience between being a general star and a neutron/ black hole
- red supergiant
- supernova
what conditions are needed for fission to occur in a star
- high temps
- high pressure
how are elements distributed through the universe
- through the explosion of a massive star (supernova)
give 2 uses of artificial satellites
- TV
- imaging
