Earth Science Geology, the Environment, and the Universe

Section 3: Formation of the Atmosphere and Oceans

Self-Check Quizzes-English

1
What significance do the banded iron formations play in Earth's development?
A)They represent the presence of red and brown algae in the oceans.
B)They show that the buildup of sediments was continuous during that time.
C)They confirm that iron was present in the sediments when they were deposited.
D)They show that the composition of the atmosphere changed to contain oxygen.
2
Earth's atmosphere has changed greatly since the planet formed. What gas was most likely rare or absent in Earth's earliest atmosphere?
A)methane
B)ammonia
C)nitrogen
D)oxygen
3
What substance in Earth's atmosphere protects organisms from UV radiation?
A)ammonia
B)water vapor
C)ozone
D)methane
4
The presence of oxygen in Earth's early atmosphere protected the surface from the Sun's UV rays by ___.
A)making the atmosphere thicker
B)forming the ozone layer
C)adding more water vapor to the atmosphere
D)causing more clouds to form
5
What was the original composition of Earth's atmosphere?
A)ammonia and hydrogen
B)hydrogen and helium
C)water vapor and methane
D)nitrogen and carbon dioxide
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