1. What marks the end of the Phanerozoic Eon?
a. the first appearance of organisms with hard parts
b. oxygen breathing organisms
c. It has not ended yet
d. mammals
2. What is the current era?
a. Archean
b. Cenozoic
c. Mesozoic
d. Paleozoic
3. According to the table, which was the first significant event that involved life?
Table 1: EARTH HISTORY-SHAPING EVENTS
Origin of the solar system
Earth forms, 4.6 B.Y.B.P.
Oceans form, 4.0 B.Y.B.P
Primitive algae evolves, 3.3 B.Y.B.P
First fossil evidence of multicellular organisms,
1.2 B.Y.B.P.
Trilobites are abundant, algal reefs form, 600
M.Y.B.P.
First corals evolve, invertebrates dominate
oceans, 500 M.Y.B.P.
First land plants evolve, insects appear, 440
M.Y.B.P.
Fishes are abundant, early amphibians evolve,
Dinosaurs are abundant, 180 M.Y.B.P.
The first birds evolve, 180 M.Y.B.P.
Asteroid impact, 66 M.Y.B.P.
Modern groups of mammals appear, 60 M.Y.B.P.
Earliest horses evolve, 60 M.Y.B.P.
Large mammals evolve, 40 M.Y.B.P.
Carnivores abundant, 11 M.Y.B.P.
Adirondack mountains uplifted, 11 M.Y.B.P.
First humanoids evolve (Australopithecus
africanus), 3 M.Y.B.P.
Ice Age of the Pleistocene begins, 1 M.Y.B.P.
Mammoths and mastodons are abundant, 1
400 M.Y.B.P.
M.Y.B.P.
Forests that become coal swamps are present,300 Large ice sheets retreat ~ 10 000 years ago
M.Y.B.P.
Mount Vesuvius erupts and destroys Pompeii,
Earliest reptiles evolve, 300 M.Y.B.P.
A.D.79
Alleghenian Orogeny occurs, 270 M.Y.B.P.
New Madrid Earthquake, 1811-1812
Trilobites become extinct, 270 M.Y.B.P.
Chicago Fire 1871
Earliest dinosaurs appear, 225 M.Y.B.P.
Krakatoa eruption in Java, 1883
Pangaea breaks up, 225 M.Y.B.P.
Chicago Bull win 5th World Championship, 1997
Earliest mammals evolve, 200 M.Y.B.P.
a. origin of the solar system
b. Earth forms
c. oceans form
d. primitive algae evolves
4. What is the shortest division of time in the geologic time scale?
a. an epoch
b. a period
c. an era
d. an eon
5. What era of geologic time ended with the largest extinction event in Earth history?
a. the Cenozoic
b. the Cretaceous
c. the Paleozoic
d. the Mesozoic
6. What is the longest division of time in the geologic time scale?
a) an epoch
b) a period
c) an era
d) an eon
7. What is at the bottom of the geologic time scale?
a. the Silurian Period
the Cenozoic Era
c. the oldest division of time
d. the youngest division of time
According to the figure on the next page, what marked the end of the Mesozoic Era?
8.
a) the extinction of many marine invertebrates
b) the extinction of the dinosaurs
c) the building of the Appalachians ends
d) mammals are \
9. For undisturbed, horizontal strata of sedimentary rocks, their age
A) increases from top to bottom
B) decreases from top to bottom
C) can be determined from their color
D) is the same
10. What makes a good index fossil?
A) big and easy to see in the field
B) with a hard shell that can be easily preserved
C) spans over a long geological time period
D) widespread geographically and limited to a short span of geological time.
11.Most of the periods in the geologic timescale are named for the
a) Geographic localities
b) Most common animal
c) Time of the year
d) Scientist that discovered the fossil known for that time period
12 )What is relative dating?
Going on a date with a sibling or cousin.
Establishing that something happened a very long time ago.
Establishing a sequence of events.
Placing a specific date on an event.
13) If a dike protrudes through several layers of rock, what can we conclude?
a)A batholith resides nearby.
b)A volcano resides nearby.
c)The dike formed before the rock layers.
d)The rock layers formed before the dike.
14) What does the term Paleozoic mean?
a)Ancient life.
b)Future life.
c)Middle life.
d)Recent life.
15) Dinosaurs and humans existed at the same time period.
True or False
16)The earth has been dated radiometrically to be 4.5 billion years old
True or False
17) Evolution and survival of the fittest are the same thing.
True or False
18) There are two types of evolution punctuated and gradual.
True or False
Choose the letter that best corresponds to the events listed below.
19)
20)
21)
22)
23)
Stromatolites
Beginning of time
Dinosaurs Became Extinct
The Oldest Known Rocks
First Humans
B__D_____A_________________________________________C______E_
Test Chapter 30
Geologic time