Worksheets2nd Quarter assessment Practice age dating of rock
Total questions: 14
Worksheet time: 8mins
Name
Class
Date
1.
Rocks or fossils found in the LOWEST layers are ___________ than those in the top layers
a)
younger
b)
older
c)
the same age
d)
more common
2.
what is the main compound used to determine absolute age of once living things less than 50,000 years old?
a)
carbon-14
b)
calcium-69
c)
lead-21
d)
organic material-9000
3.
Knowing whether a rock is older or younger is known as
a)
Absolute age
b)
Relative age
c)
Radioactive decay
d)
Half-life
4.
Some elements are radioactive which means ______________
a)
they are always the same and never change
b)
they give off energy as they break down
5.
The RATE at which a radioactive element decays remains constant
a)
TRUE
b)
FALSE
c)
Cannot be calculated
6.
Geologists use RADIOACTIVE DATING to determine the RELATIVE AGE of rocks.
a)
TRUE
b)
FALSE
c)
There is no way to know how old rocks are
7.
The amount of time it takes for material that was radioactive to decay into a more stable form
a)
Absolute age
b)
Relative age
c)
Half-life
8.
The layer labeled YOUNGEST is an example of
a)
a sedimentary rock layer
b)
an igneous intrusion
c)
a hardened lava flow
d)
an extrusion
9.
Is the Hermit Shale OLDER or YOUNGER than the Coconino Sandstone?
a)
Older
b)
Younger
c)
1 million years older
10.
Relative Age
a)
The age of rock compared to the age of rock layers
b)
The amount of rock layers there are in one area
c)
How old rocks are in terms of superposition
d)
How old each rock layer is
11.
Which rock is the oldest?
a)
Layer 1
b)
Layer 3
c)
Layer 6
d)
Layer 8
12.
Which rock layer is yougest?
a)
B
b)
G
c)
Y
d)
A
13.
Which is OLDER, Inclusion A or Fault H?
a)
A
b)
H
c)
They are the same age.
14.
What fossil is older?
a)
Trilobite
b)
Gastropod
c)
Ammonite
d)
Fern
100 %
