WorksheetsUnit 12 Review: Paleontology
Total questions: 36
Worksheet time: 27mins
Name
Class
Date
1.
In what type of rock do we typically find fossils?
a)
Metamorphic
b)
Igneous
c)
Sedimentary
d)
Minerals
2.
Younger rock lies above older rock describes what law?
a)
Strata
b)
Geologic Column
c)
Unconformities
d)
Superposition
3.
Determining a rock's age by comparing it to other rock layers; "older" or "younger"
a)
Absolute dating
b)
Relative dating
c)
Unconformities
d)
Comparisions
4.
What type of fossils help determine age?
a)
Molds and casts
b)
Organic
c)
Trace fossils
d)
Index fossils
5.
Finding a marine fossil on a mountaintop means that
a)
Fish used to be able to live on land.
b)
The mountain used to be an underwater volcano.
c)
The fossils have been moved.
d)
The mountaintop used to be the ocean floor.
6.
Which era do we currently live in?
a)
Paleozoic
b)
Cenozoic
c)
Proterozoic
d)
Mesozoic
7.
The ideal sequence of rock layers that contains all rock layers and fossils is called
a)
the geologic column
b)
unconformities
c)
superposition
d)
catastrophism
8.
The study of past life is called
a)
modern geology
b)
biology
c)
paleontology
d)
geology
9.
What fossil indicates an environmental change?
a)
Insect in amber
b)
Frozen mammoth in ice
c)
Footprint in sandstone
d)
A fish fossil in a desert.
10.
How old do paleontologists think the Earth is?
a)
1 million years
b)
65,000 years
c)
10 billion years
d)
4.6 billion years
11.
What does absolute dating tell us about rocks and fossils?
a)
Relative dating
b)
Superposition
c)
Paleontology
d)
Exact age
12.
If we find fossils of the same species on different continents, what does that tell us?
a)
This organism lived on multiple continents.
b)
Fossils must have been moved by erosion.
c)
These are probably trace fossils.
d)
Continents used to be connected.
13.
The Law of Superposition helps scientists to determine what?
a)
The absolute age of rock layers
b)
The size of dinosaurs
c)
The relative age of rock layers
d)
the super powers of rocks
14.
According to the law of superposition, the oldest fossils are found
a)
At the top of the rock layers
b)
Near the bottom of the rock layers
c)
In the middle of the rock layers
d)
Somewhat near the surface
15.
Which rock layer in the diagram seems to be the oldest?
a)
F
b)
E
c)
B
d)
A
16.
Igneous rock that has pushed upwards through other layers of rock and is younger than all of the layers it pushes through.
a)
Fault
b)
Intrusion
17.
A break in earth's crust that breaks layers of rock; is younger than all of the layers that are distrubed.
a)
Intrusion
b)
Fault
18.
Which layer is the oldest?
a)
A
b)
B
c)
C
d)
D
19.
Intrusions are ____________________ than the rock that they push through.
a)
older
b)
younger
20.
Which layers formed at the same time?
a)
B and F
b)
E and A
c)
B and D
21.
Which layer is the youngest?
a)
d
b)
e
c)
f
d)
g
22.
Which layer is the oldest?
a)
b
b)
c
c)
d
d)
e
23.
A trilobite, which lived during only one era, is a good example of a(n)
a)
trace fossil
b)
complex organism
c)
intrusion
d)
index fossil
24.
Most fossils are formed by
a)
being preserved in amber
b)
being frozen
c)
drying out
d)
being buried in sediment
25.
A fossil is
a)
any dead organism
b)
a copy of a rock
c)
the preserved remains or traces of an organism
d)
none of these
26.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
27.
After the third half-life, how much of the sample is left?
a)
1/2
b)
1/3
c)
1/16
d)
1/8
28.
The half life of iodine-131 is 8.040 days. What percentage of an iodine-131 sample will remain after 40.20 days?
a)
312.5%
b)
31.25%
c)
.3125%
d)
3.125%
29.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
a)
1 half-life
b)
2 half-lives
c)
3 half-lives
d)
4 half-lives
30.
According to the law of superposition, which layer is the youngest?
a)
A
b)
B
c)
C
31.
Which of the following is the oldest?
a)
Layer L
b)
Intrusion D
c)
Intrusion H
d)
Layer E
32.
Which of the following correctly lists the layers in order from oldest to youngest?
a)
A, B, C, D, E
b)
E, B, C, D, A
c)
E, D, C, B, A
d)
C, B, A, D, E
33.
Which era do we currently live in?
a)
Paleozoic
b)
Cenozoic
c)
Proterozoic
d)
Mesozoic
34.
Which era ended with 90% of species becoming extinct?
a)
Cenozoic
b)
Proterozoic
c)
Paleozoic
d)
Mesozoic
35.
The process when minerals replace an organism's tissues and turns into stone
a)
Casting
b)
Cementation
c)
Petrification
d)
Moltation
36.
this type of fossil provides evidence of the activities of ancient organisms; examples include marks left by footprints or tails
a)
mold
b)
carbon film
c)
trace
d)
cast
100 %
