Section #: 22.3
Formation of the Atmosphere and Oceans
Practice Test
1.
Why don't Archean and Proterozoic rocks have iron oxides?
SC.D.1.4.4
a.
there was too much iron to be oxidized
b.
there wasn't any iron in rocks of that age
c.
there wasn't any free oxygen in the atmosphere
d.
there weren't any stromatolites at that time
Hint
2.
__________ are rocks that have alternating bands of fine-grained quartz and iron oxides.
SC.D.1.4.4
a.
All Archean rocks
b.
Banded iron formations
c.
Sedimentary rocks
d.
Red beds
Hint
3.
What was the original composition of Earth's atmosphere?
SC.D.1.4.4
a.
hydrogen and helium
b.
ammonia and hydrogen
c.
nitrogen and carbon dioxide
d.
water vapor and methane
Hint
4.
What substance in Earth's atmosphere protects organisms from UV radiation?
SC.D.1.4.1
a.
water vapor
b.
methane
c.
ammonia
d.
ozone
Hint
5.
What process is primarily responsible for the formation of Earth's oceans?
SC.D.1.4.4
a.
evolution
b.
outgassing
c.
plate tectonics
d.
sea-floor spreading
Hint
