NEW
Font size
S
M
L
XL
WorksheetsGeologic time and Fossils
Total questions: 21
Worksheet time: 11mins
Name
Class
Date
1.
The last step in the formation of a fossil...
a)
buried organism
b)
the organism dies
c)
sediments with the organism harden
d)
none of these
2.
One of the first bird fossils...
a)
trilobite
b)
archaeopteryx
c)
titanis
d)
sea pen
3.
The oldest layer lies at the bottom of an undisturbed rock stratum.
a)
radioactive decay
b)
absolute age
c)
superposition
d)
intrusion
4.
Looking at the diagram, which layer is the oldest?
a)
dolomite
b)
limestone
c)
basalt
d)
beach sand
5.
The half life of barium-139 is 86 minutes. If you had a 100 gram sample, how much would be left after 172 minutes?
a)
50 g
b)
25 g
c)
12.5 g
d)
6.25 g
6.
Which of these is widely spread over a short geologic time and usually are found in one layer of the rock stratum?
a)
preserved fossils
b)
inrock fossils
c)
index fossils
d)
trace fossils
7.
The era that dinosaurs ruled the Earth's land, air and oceans.
a)
Cenozoic
b)
Paleozoic
c)
Precambrian
d)
Mesozoic
8.
Uncomformity or fold?
a)
fold
b)
uncomformity
9.
Which event occurred at the end of the Permian period?
a)
Dinosaur extinction
b)
KT asteroid
c)
80% of all living things became extinct
d)
trilobite extinction
10.
Age of the fishes!
a)
Paleogene
b)
Devonian
c)
Quarternary
d)
Triassic
11.
The correct order of the periods from earliest to more recent...
a)
quarternary, triassic, paleogene, cretaceous
b)
triassic,cretaceous, paleogene, quarternary
c)
paleozoic, mesozoic, cenozoic
12.
What am I called?
a)
tyrannosaurus
b)
pteradactyl
c)
trilobite
d)
Sea scorpion
13.
Evidence that supports the KT asteroid theory...
a)
dead dinosaurs
b)
a picture showing it happening
c)
an uncomformity
d)
a layer of iridium on Earth
14.
A gap in the geologic record where rock layers have been lost do to erosion...
a)
folding
b)
intrusion
c)
uncomformity
d)
faulting
15.
Which of the following is an example of a preserved fossil?
a)
insect in amber
b)
foot prints
c)
leaf imprint in fossilized rock
16.
2.5 billion years ago photosynthetic bacteria produced which of the following?
a)
hydrogen gas
b)
carbon dioxide
c)
oxygen gas
d)
argon gas
17.
Which of the following is not evidence provided by the fossil record?
a)
genes of past organisms
b)
past environments
c)
past activities of living things
d)
all of the above
18.
Which of the following would be used to determine the absolute age of a fossil found in a layer of rock that dates 20,000 years old?
a)
Uranium-235
b)
Potassium-40
c)
Carbon-14
d)
All of these
19.
Which of the following is the age of a fossil in years?
a)
relative age
b)
absolute age
c)
radio age
d)
old age
20.
These gases made up Earth's first atmosphere...
a)
oxygen, hydrogen
b)
oxygen, nitrogen
c)
helium, nitrogen
d)
hydrogen, helium
21.
The geologic time scale shows ...
a)
geologic events and life forms
b)
life forms and genes of fossils
c)
geologic events and genes of fossils
Reset
