space p2

Question 1

common processes

Answer 1

1)nebula- giant cloud of dust and gas, gravity makes it collapse, temp increases fast=
2)protostar-when temp is high, hydrogen nuclei fuse-helium-n fusion-makes it shine=
3)main sequence star-spends most life in this phase, stable forces are balanced, higher temp=star expands

Question 2

stars like sun

Answer 2

1)red giant-only when hydrogen fuel in core is used up and collapses inwards, helium nuclei fuse to expand star=
2)white dwarf-cools down+shrinks=
3)cold black dwarf

Question 3

stars bigger than sun

Answer 3

1)red super giant-once hydrogen is used up, fusion allows nuclei to form elements up to Fe
2)n fusion stops,core cools, increasing core temp+energy=exploding into=
3)supernova-nuclei heavier than Fe formed, blasted into space to dust and gas, forming new stars
4)if small-neutron star-very hot+dense, spin on axis and wobble
5)if big-black holes

Question 4

planet order

Answer 4

sun- mercury venus easy mars jupitar saturn uranus neptune