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WorksheetsGeologic Time & Dating
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What is relative dating?
a)
An exact time period with dates
b)
When a mass extinction occurred
c)
An estimate of a time period or age
d)
The age of Dinosaurs
2.
What era do we live in?
a)
Cenozoic
b)
Pleistocene
c)
Jurassic
d)
Holocene
3.
What was the name of the very first supercontinent?
a)
Superzoic
b)
Rodinia
c)
Pangaea
d)
Gigantica
4.
Carbon-14 is used to find the age of organic fossils, which means those organisms:
a)
Were once living
b)
Became fossilized in the ocean
c)
Died in the desert
d)
Came into contact with radiation
5.
During which era was much of the Earth covered in swamps and forests?
a)
Cretaceous
b)
Carboniferous
c)
Triassic
d)
Precambrian
6.
The "daughter isotope" in a rock sample refers to the radioactive particles.
a)
True
b)
False
7.
This is used to divide Earth's long history into manageable parts:
a)
Invertebrates
b)
Portioning
c)
Law of Horizontality
d)
Geologic Time Scale
8.
Which of the following is an "event" that a scientist might use to mark the start or end of an era?
a)
Evolution
b)
Extinctions
c)
Index fossils
d)
All fossils in a single rock sample
9.
A massive volcanic eruption could have cause the extinction of the dinosaurs because:
a)
It covered the planet in lava
b)
It caused a chain reaction of volcanic eruptions
c)
Ash blocked all the light from the sun
d)
A volcanic eruption isn't an extinction theory
10.
In order of largest to smallest, Geologic time is broken down in the following way:
a)
Periods - Eras - Eons
b)
Eons - Eras - Periods
c)
Eras - Periods - Eons
d)
Just Eons to Periods
11.
Rock layers and fossils in different places on the globe can be matched up through a process called:
a)
Correlation
b)
Look-alikes
c)
Horizontality
d)
Deposition
12.
If a rock contains 25% radioactive (parent) material, how many half-lives have passed?
a)
1
b)
2
c)
3
d)
4
13.
What does the prefix "Meso" stand for? (Ex. Mesozoic)
a)
Recent
b)
Ancient
c)
Middle
d)
Life
14.
The concept that younger layers of rock are deposited on top of older layers:
a)
Superposition
b)
Improvisation
c)
Cross-Cutting
d)
Animation
15.
If an igneous intrusion or fault cuts through existing rock layers, the intrusion/fault is:
a)
Older
b)
The same age
c)
Younger
d)
None of the above
16.
What is the Paleozoic Era also known as?
a)
Age of Mammals
b)
Age of Bacteria
c)
Age of Reptiles
d)
Age of Fish
17.
Which of the following laws applies when a rock cuts through pre-existing layers?
a)
Law of Original Horizontality
b)
Correlation
c)
Fossilization
d)
Law of Cross-Cutting Relationships
18.
The specific number of years that has passed since a rock was formed is referred to as?
a)
Relative age
b)
Approximate age
c)
Absolute age
d)
Recorded age
19.
How old is the Earth?
a)
4.6 billion years
b)
4.4 million years
c)
6.5 billion years
d)
2017 years
20.
Gaps or missing layers in the rock record often formed by erosion are called:
a)
Superpositions
b)
Carbon films
c)
Unconformities
d)
Relative ages
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