The average thickness of oceanic lithosphere is closest to:
a) 5km
b) 10km
c) 30km
d) 100km
e) 1000km
~ d) 100km
You are in Iceland, witnessing a lava flow. What is most likely to be the
composition of the lava? :
a) felsic
b) mafic
c) ultramafic
d) iron
e) intermediate
~ b) mafic
Y...
Who said: "All life and all the material parts of the Earth's Surface make up a
single system, a king of meta-organism, and a living planet."?
a) Yogi Berra
b) James Lovelock
c) Brad Allenby
d) Thomas Midgely
e) Sir Thomas Tredgold
✓✓✓✓~ b) James Lovelock
What is the present human population of Earth (apporximately)?
a) 1 billion
b) 3 billion
c) 7 billion
d) 10 billion
, e) 14 billion
✓✓✓✓~ c) 7 billion
The Atlantic Ocean is opening up at a rate closest to;
a) 0.05 cm/year
b) 5 cm/year
c) 50 cm/year
d) 5 meters/year
e) 50 meters/year
✓✓✓✓~ b) 5 cm/year
By weight, 90% of the earth is made up of four elements. These four, in
decreasing order of abundance from left to right, are:
a) Si, O, Al, Fe
b) O, Fe, Si, Ni
c) O, Si, Al, Fe
d) Fe, O, Si, Mg
e) O, Si, Fe, Al
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