Ch. 1 - Introduction Flashcards Preview

Physical Geology - Basics > Ch. 1 - Introduction > Flashcards

Flashcards in Ch. 1 - Introduction Deck (9)
Loading flashcards...
1

13.8 By

 

 

approx age of the universe

 

 

 

13.8 x 109yr

2

 

 

 

approx age of Earth

 

 

 

4.5 x 109yr

3

 

 

 

the beauty part about ♁ distance from ☉ is:

 

 

 

water exists naturally in all 3 phases

4

 

 

 

the "spheres" of Earth

 

 

 

atmosphere, hydrosphere, biosphere, geosphere

5

 

 

 

atmosphere - mass relative to Ô, composition today

 

 

 

< 0.01% MÔ; 78% N2, 21% O2, < 1% other gases

6

 

 

 

water is present as (phase, %):

 

 

 

oceans ~97.2%; ice ~2.15%; groundwater ~0.62%;

soil moisture, vapor in atmosphere, inland lakes, rivers < 1%

7

 

 

 

what is the main sculptor of land masses on Ô

 

 

 

running water; wind is a negligible factor

8

 

 

 

what is the 5th sphere?

 

 

 

the anthroposphere (not yet formalized)

9