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7.1 Astronomy - Coggle Diagram
7.1 Astronomy
Stars
Similar mass to sun
Red Giant
Forces unbalanced as hydrogen runs out
Outward forces greater causing swelling
White Dwarf
Fusion stops and star contracts under gravity
Black Dwarf
Star's energy runs out
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Larger mass than sun
Red Supergiant
Larger main sequence stars swell to supergiants
Supernova
Large explosion
Heavy elements from core sent into the universe
Black Hole
Largest red supergiants contract resulting in a black hole
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The lifecycle of a star depends on the star's mass
Outward forces (radiation pressure) balanced by inward gravitational forces
Orbits
Circular orbits
Constant speed but changing velocity
In circular motion the direction is always changing
Stable orbits
If orbital speed changes, the radius must change