Facts About The World Flashcards
1
Q
How many people are there on this earth?
A
8 billion people
2
Q
What percentage of the Earth is covered by the seas?
A
70%
3
Q
What percentage of the world is covered in desert?
A
10%
4
Q
How deep is the earths liquid rockc
A
4,000 miles
5
Q
How thick is the solid crust
A
3-44 miles deep
6
Q
What percentage of the atmosphere is only 7 miles thick
A
85%
7
Q
How old is planet Earth
A
4,500 million years old
