Climate Change Flashcards
1
Q
Obliquity
A
The tilt of the Earth’s axis
41000 years
2
Q
Precession
A
The tilt of the Earth at the perihelion and aphelion
19000 and 23000 year cycle
3
Q
Perihelion
A
The Earth’s closest approach to the Sun
4
Q
Aphelion
A
The Earth’s furthest point from the Sun
5
Q
O18 levels
A
Low when warm
High when cold (because O16 is locked up in ice)
6
Q
Eccentricity
A
How circular the orbit of the Earth is
100000 year cycle
