WorksheetsEarth Science Revision 3
Total questions: 40
Worksheet time: 1hrs 18mins
Name
Class
Date
1.
Modern humans (Homo sapiens) and dinosaurs never existed together on Earth.
a)
True
b)
False
2.
When did life on Earth begin?
a)
4.6 to 4.0 billion years ago
b)
3.9 to 3.5 billion years ago
c)
4.6 to 4.0 million years ago
d)
3.9 to 3.5 thousand years ago
3.
Which of the following places the geologic time eras in order from oldest to most recent?
a)
Precambrian, Paleozoic, Mesozoic, Cenozoic
b)
Mesozoic, Cenozoic, Paleozoic, Precambrian
c)
Cenozoic, Mesozoic, Paleozoic, Precambrian
d)
Paleozoic, Cenozoic, Precambrian, Mesozoic
4.
The ______________ time division covers almost 90% of earth's history.
a)
Paleozoic
b)
Mesozoic
c)
Cenozoic
d)
Precambrian
5.
According to the law of superposition, which layer is the youngest?
a)
A
b)
B
c)
C
6.
a)
1
b)
2
c)
3
d)
5
7.
Which of the following questions can be answered by studying these fossil layers?
a)
What did the fish eat?
b)
Which organisms lived before/after/or at the same time?
c)
Why did dinosaurs become extinct?
d)
Are reptiles the ancestors to birds or fish?
8.
Relative age of a rock is the number of years that have passed since the rock formed?
a)
True
b)
False
9.
Radiometric dating is often referred to as
a)
total age.
b)
absolute dating.
c)
historic age.
d)
geologic age.
10.
Why is the fossil record incomplete?
a)
fossils get eroded away over time
b)
most organisms never became fossils
c)
scavengers and decomposers eat them too quickly
d)
all of these
11.
The Geologic Time Scale is a record of what?
a)
old geologists
b)
sweet geology music
c)
the known history of rocks and fossils
d)
a list of every living thing ever
12.
What can scientists learn from the sequence of rock layers?
a)
Geologic history of that area
b)
Future geological events
c)
The number of organisms that live in the area
d)
The impact that hikers have had on an area.
13.
The Principle of Superposition states that the oldest layer of rock is located at the/a...
a)
Top
b)
Bottom
c)
Middle
d)
Random Location
14.
Index fossils CAN tell us the age of a rock layer.
a)
True
b)
False
15.
What is any evidence of ancient life called?
a)
Half-life
b)
Fossil
c)
Unconformity
d)
Uniformitarianism
16.
The most recent era in the Geologic Timescale is sometimes called...
a)
the age of mammals.
b)
the age of reptiles.
c)
the age of fish.
d)
the rise of the planet of the apes.
17.
Fossils are only found in which type of rock?
a)
igneous
b)
sedimentary
c)
metamorphic
d)
fossil rock
18.
When an animal leaves an impression or tracks in soft sediment such as mud.
a)
Petrification
b)
Trace fossil
c)
Drawn fossil
19.
Define radioactive dating
a)
A method to find a rock's absolute age
b)
a rocks relative age
c)
Using radio waves to find the age of a rock
d)
Listening to the radio
20.
Radioactive decay is..
a)
Something rocks do
b)
When a non radioactive element changes into a radioactive one
c)
When radio waves move slower through rocks
d)
When an element inside a rock decays into another element
21.
One huge continent-Pangaea-forms.
a)
mesozoic
b)
cenozoic
c)
paleozoic
22.
This marks the end of the Cenozoic era.
a)
climate change
b)
This era has not ended.
c)
Astreroid impact
d)
Global warming
23.
Mass extinction of the dinosaurs marks the end of this era.
a)
Mesozoic
b)
Cambrian
c)
Jurassic
d)
Cenozoic
24.
Dinosaurs ruled this era.
a)
Paleozoic
b)
mesozoic
c)
precambrian
d)
cenozoic
25.
According to the law of superposition, which layer is the youngest?
a)
A
b)
B
c)
C
26.
If an index fossil is found in two rock layers that are separated by an ocean, what do you know about the relationship between the two rock layers?
a)
they are about the same age
b)
they used to be in the same area
c)
the are made of the same kind of rock
d)
the rock layers are unrelated
27.
Which type of dating method can be used on rock layers by applying the Law of Superposition?
a)
relative dating
b)
absolute dating
c)
radioactive dating
d)
radiometric dating
28.
Gaps in rock layers caused by erosion are called
a)
law of superposition
b)
unconformities
c)
uniformitarianism
d)
relative dating
29.
The time it takes for half the atoms in an element to decay into something else is called
a)
absolute age dating
b)
relative age dating
c)
half-life
d)
extinct
30.
States that the geologic feature which cuts another is the younger of the two features
a)
law of horizontality
b)
Law of cross cutting relationships
c)
law of superposition
d)
uniformitarianism
31.
What 2 things make a good index fossil?
a)
Good looks and a great smile
b)
widespread and on Earth of a short time
c)
widespread and on Earth for a long time
d)
only found in Clinton Twp and in every rock layer
32.
Which is the correct order of geologic time?
a)
Era >Eon >Period >Epoch
b)
Eon >Era >Period >Epoch
c)
Epoch >Period >Era >Eon
d)
Era >Eon > Epoch >Period
33.
An index fossil can help you
a)
get to know new people
b)
plan your next vacation
c)
determine the relative age of a rock layer
d)
determine the absolute age of a rock layer
34.
A break in the Earths crust
a)
fault
b)
intrusion
c)
extrusion
d)
index fossil
35.
Which of the following is the youngest?
a)
Intrusion X
b)
Fault Y
c)
Layer Z
d)
Fossil W
36.
Which of the following is the oldest?
a)
Layer L
b)
Intrusion D
c)
Intrusion H
d)
Layer A
37.
Explain why a scientist would use Potassium-14 to date a rock.
a)
If the scientists believes the rock or fossil to be over 1 billion years old than they could use it because Potassium-14 has such a long half-life.
b)
Law of Superposition
c)
To determine the age of the rock
38.
Explain why a scientist would choose to use Carbon-14 dating to date a fossil.
a)
that they are studying a fossil younger than 50,000 years
b)
Older than 1 billion years
39.
Why would a scientist decide NOT to use radiocarbon dating?
a)
If the sample obtained is a fossil
b)
if the sample obtained is older than 45,000 years
c)
if the sample is petrified
40.
What kind of information is given by radiometric dating?
a)
the age of a fossil using numbers
b)
the relative age of a fossil
c)
the behavior of an organism that lived a long time ago
d)
what killed the organism that became fossilized
100 %
