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Geological records

Total questions: 23

Worksheet time: 49mins

Name
Class
Date
1.

The Law of Superposition helps scientists to determine what?

a)

The absolute age of rock layers

b)

The age of fossils

c)

The relative age of rock layers

d)

the super powers of squirrels

2.
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
3.
An archaeologist made the following diagram of a dig site. What can be said about the pottery as compared to the skull found in the site?
a)
The rock layer with the pottery is more recent than the rock layer with the skull.
b)
The rock layer with the skull is more recent than the rock layer with the pottery.
c)
The rock layer with the skull is approximately the same age as the rock layer with the pottery.
d)
The rock layer with the skull has an absolute date of 17,000 years.
4.
The Principle of Cross-Cutting Relationships states that an igneous intrusion is 
a)
always younger than the layers it cuts across
b)
always older than the layers it cuts across
c)
the same age as the rock it melted
d)
none of the answers are correct
5.
The number of years that have passed since the rock formed is the rock's
a)
relative age
b)
law of superposition
c)
absolute age
d)
index fossil
6.
Which is older, A or D?
a)
A
b)
D
7.
The age of a rock layer compared to the other rock layers around it is called
a)
Absolute Age
b)
Relative Age
c)
Comparative Age
d)
Layer Age
8.

How is radioactive dating used to determine the absolute age of rocks?

a)

The percent of radioactive parent isotopes remaining in the rock is compared to the amount of stable daughter isotopes that are present

b)

it compares the radioactive isotope in a younger layer of rock to an older layer

c)

isotopes of different compounds are compared

d)

daughter isotopes are compared to sister isotopes

9.
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
10.
The original element that undergoes radioactive decay is known as the...
a)
daughter element
b)
half-life
c)
parent element
d)
carbon-14
11.
What is the process of making fossils?
a)
Pressure
b)
Fossilization
c)
Rock Layers
d)
Sediment
12.
a)
True Form Fossil
b)
Mold and Cast Fossil
c)
Carbon Film Fossil
d)
Trace Fossil
13.
a)
True Form Fossil
b)
Mold and Cast Fossil
c)
Carbon Film Fossil
d)
Trace Fossil
14.
a)
True Form Fossil
b)
Mold and Cast Fossil
c)
Carbon Film Fossil
d)
Trace Fossil
15.
The process of making a carbon film fossil is:
a)
Unaltered Preservation
b)
Fossilization
c)
Decaying
d)
Carbonization
16.

turn to stone

a)

frozen areas

b)

hard parts

c)

petrification

d)

amber

17.

tree sap

a)

amber

b)

cast

c)

imprint

d)

frozen areas

18.

The best index fossils have which two traits?

a)

widespread geographically, long lifespan

b)

widespread geographically, short lifespan

c)

specific place, long lifespan

d)

specific place, short lifespan

19.

The numerical age, in years, of any object.

a)

absolute age

b)

relative age

c)

space age

d)

old age

20.
After the third half-life, how much of the sample is left?
a)
1/2
b)
1/3
c)
1/16
d)
1/8
21.

The half life of a 522 isotope 4 times

a)

35.25

b)

174

c)

35.5

d)

70.5

22.

Do you need rocks to date time

a)

Yes

b)

No

23.

What is semimentation

a)

Sediment layer

b)

Covered by sediment in a layer

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