Origin of Life The cratering we see on our Moon occurred during: A. the formatio
ID: 114719 • Letter: O
Question
Origin of Life
The cratering we see on our Moon occurred during:
A.
the formation of the Moon
B.
Earth's collision with Theia
C.
Bumper Car Period
D.
Late Heavy Bombardment
Question 2
The oldest evidence of life on the Earth may be contained in crinkly laminations called:
A.
granulites
B.
stromatolites
C.
greenstones
D.
stromatoporoids
Question 3
The first formed rocks on the surface of the Earth are not available to study because:
A.
they were probably eroded away
B.
they may have been metamorphosed so their age-dating would be flawed
C.
they were remelted when differentiated remelted the original surface
D.
all of these
Question 4
The Solar System including the Earth, formed from:
A.
eruption of the sun
B.
evaporation of a black hole
C.
collision of two stars
D.
contraction of a nebula
Question 5
Although the oldest stromatolites are void of the evidence of life, later versions contain the remains of
A.
granulites
B.
greenstone belts
C.
cyanobacteria
D.
dinosaurs
Question 6
In the early solar system, the Earth had another planet in our orbit called:
A.
Theia
B.
Planet X
C.
Eros
D.
Venus
Question 7
The rotational axes of some planets, including the Earth, aren't perpendicular to their orbital planes because:
A.
they were probably struck by other protoplanets in their orbit
B.
conservation of angular momentum sent some spinning off axis
C.
the nebula was turbulent
D.
all of these
Question 8
Evidence that the Earth was hit by an large (relative to Earth) celestial body include(s):
A.
granulites
B.
stromatolites
C.
BIF
D.
tilt of rotational axis
Question 9
Archean banded iron formations are composed of iron in the form of:
A.
magnetite
B.
hematite
C.
red beds
D.
none of these
Question 10
The magnetite in Banded Iron Formations indicates that oxygen levels were probably ___ compared to today.
A.
higher
B.
lower
C.
same as
Question 11
The oldest dated zircon crystals are inclusions in rocks that date back 4.4 billion years, meaning that the conglomerate the zircons are found in are ____ than the oldest Earth material
A.
older
B.
younger
C.
the same age as
Question 12
We now know our Moon was created by:
A.
capture of a passing moon
B.
split off Earth because of rapid rotation of Earth in past
C.
formed when a Mars-sized object struck the Earth
D.
formed in orbit around Earth at same time as Earth
Question 13
According to common understanding among geologists (and your textbook) greenstone belts represent:
A.
impact basins
B.
early ocean basins
C.
cryptovolcanic structures
D.
early life fossils
Question 14
The oldest rock types of Earth materials are:
A.
greenstones
B.
BIFs
C.
granulites
D.
meteorites
Question 15
The large volume of carbon dioxide in Earth's first atmosphere decreased due to the formation of:
A.
granulites
B.
BIFs
C.
carbonates
D.
photosythesis
Question 16
The Earth's first atmosphere came from:
A.
photosynthesis
B.
bumper car period
C.
captured from Theia
D.
volcanoes degassing
Question 17
Our present atmosphere (modified over time)came from:
A.
comet impacts
B.
collision with Theia
C.
degassing by oceans
D.
degassing of volcanoes
Question 18
We know the age of the solar system from studying:
A.
greenstones
B.
BIFs
C.
granulites
D.
meteorites
Question 19
The craters formed during the Late Heavy Bombardment period are missing on the Earth because:
A.
erosion has erased them
B.
metamorphism has erased them
C.
the movement of Earth's plates (Plate Tectonics) has erased them
D.
all of these
Question 20
The nucleus of a continent, the oldest rocks of a continent are called:
A.
Algomas
B.
BIFs
C.
cratons
D.
greenstone belts
A.
the formation of the Moon
B.
Earth's collision with Theia
C.
Bumper Car Period
D.
Late Heavy Bombardment
Explanation / Answer
1. The craters are formed by the impact. Late heavy bombardment is the cause
2. stromatolites. These are the first formed lumps of bacteria that created oxygen through photosynthesis.
3. The first formed rocks are eroded and metamorphosed and are remelted again in the rock cycle.
4.contraction of nebula. The nebula is a pack of gas and rocks and when the nebula started contracting it left many gases and planets
5. Cyanobacteria. The photosynthesis by cyanobacteria resulted in the formation of the stromatolites.
6. Theia. According to the giant hypothesis on impact, the theia collided with Gaia
7. Conservation of angular momentum sent some spinning of the axis. The shape of the Earth is not rounded.
8. Tilt of rotational axis. Before the impact has significant amount of angular momentum and mass.
9. Hematite as the iron is formed in sedimentary rocks.
10. High oxygen resulted in the formation of BIS
11. Younger than the earth
12. Splitting of earth after the collision
13 early ocean basin
14.BIF
15.Photosynthesis
16 volcanoes degassing
17.degassing of volcanoes
18. Meteroits
19 all of them
20 algomas
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