Universe Timeline Flashcards
1
Q
Life cycle of a star
A
Birth: Nebula
Main sequence: burn hydrogen
Red giant: outside of star expands
Collapse: core makes iron and star collapses
2
Q
When did earth form
A
4.6 billion years ago
From cloud of matter
3
Q
When did moon form
A
4.5 billion years ago
4
Q
When did life begin
A
850-580 mill plant life
580-480 mill sea animals
199-65 mill large animals
25.7 thousand human
5
Q
How was the moon formed
A
Theia crashing into earth and debris formed moon
6
Q
When did the Big Bang happen?
A
13.6 billion years ago
