1-10 Flashcards
1
Q
What is the age of the Universe?
A
13.7 billion years
2
Q
- What is the age of the Earth?
A
4.5 billion years
3
Q
If the Earth’s history is squeezed into one year, then the human history merely occupies the last
A
2 seconds.
4
Q
When did human first appear on Earth?
A
2 million years
5
Q
What is the current abundance of global atmospheric CO2?
A
400 ppm
6
Q
How much would the global sea level rise if 10% of Greenland ice sheet melts?
A
1 m
7
Q
How much would the global sea level rise if all Arctic sea ice melts?
A
0
8
Q
What is the current rate of increase of atmospheric CO2?
A
2 ppm/year
9
Q
What is the approximate rate of increase of atmospheric CO2 due to volcanic emissions?
A
0.1 ppm/year
10
Q
Why was the path of Hurricane Sandy (2012) in the Atlantic Ocean unusual?
A
The path should have turned east but it didn’t.
