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WorksheetsClues to Earth's Past
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Fossils most often form when a dead organism is buried in sediments.
a)
True
b)
False
2.
Carbon films are formed when a thin film of carbon is left, forming a picture of the original organism.
a)
True
b)
False
3.
Dinosaur footprints are original remains.
a)
True
b)
False
4.
To be a useful index fossil, a species must have been found in only one are of the world.
a)
True
b)
False
5.
Index fossils are the remains of species that existed on Earth for relatively short periods of time and lived in many places.
a)
True
b)
False
6.
Absolute age examines the position of rocks in a sequence.
a)
True
b)
False
7.
Rock layers are correlated if they both contain the same fossils.
a)
True
b)
False
8.
The fossil remains of Sue the T-Rex in the Chicago Museum of Natural History is an example of permineralized remains.
a)
True
b)
False
9.
All of the following conditions help preserve organisms as fossils EXCEPT____________.
a)
quick burial by sediments
b)
hard parts
c)
protection from scavengers
d)
activities of microorganisms
10.
If the same types of fossils are found in two separate rock layers, it is likely that the two rock layers _________________.
a)
formed at different times
b)
are part of one continuous deposit
c)
formed under different conditions
d)
none of the above
11.
Determining the order of events and the relative age of rocks by examining the position of rocks in a sequence is called ____________.
a)
absolute dting
b)
radiometric dating
c)
relative dating
d)
radiocarbon dating
12.
If the same sequence of rock layers is observed over a large area, ___________________.
a)
they are probably NOT related
b)
a large deposit of rock formed over a large area
c)
conditions of formation were probably very different
d)
it is just a coincidence
13.
In a series of undisturbed rock layers where shale lies between sandstone below and limestone above, the ____________.
a)
limestone is youngest
b)
shale is youngest
c)
sandstone is youngest
d)
beds are all the same age.
14.
______________dating uses the properties of atoms in rocks and other objects to find their ages.
a)
Comparative
b)
Absolute
c)
Approximate
d)
Relative
15.
With __________dating, a rock's exact age can be determined, whereas with _________dating, a rock's age is compared to the ages of other rocks.
a)
absolute, relative
b)
relative, absolute
c)
true, absolute
d)
relative, approximate
16.
Gaps in rock layers are called ____________.
a)
unconformities
b)
index fossils
c)
half-lives
d)
none of the above
17.
If a layer of sandstone lies on top of a layer of limestone in which a 300-million -year-old fossil is found, and there are no unconformities, the layer of sandstone must be _________.
a)
older than 300 million years
b)
younger than 300 million years
c)
about 3000 million years old
d)
older than 600 million years
18.
Rock layers are correlated if they both contain the same _________.
a)
elements
b)
shapes
c)
fossils
d)
type of rock
19.
Trace fossils that show the activities of organisms could be _______.
a)
mold and cast fossils
b)
invisible
c)
muddy
d)
footprints, trails and burrows
20.
A mosquito trapped in amber is a type of _____________fossil.
a)
permineralized
b)
original or preserved remains
c)
mold and cast
d)
carbon film
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