WorksheetsEarth History Lsa Review
Total questions: 24
Worksheet time: 14mins
Name
Class
Date
1.
Which is the best example of an index fossil?
a)
corals found in rock layers worldwide
b)
dinosaur bones found only in Australia
c)
footprints of different types of dinosaurs
d)
casts of bird feathers found in all layers of rock in an area
2.
Which theory does evidence found in sedimentary rocks best support?
a)
most organisms from Earth's history still exist.
b)
Organisms have not changed significantly over time.
c)
All organisms from Earth's history have become extinct.
d)
organism's have evolved from simple to complex forms.
3.
Where is evidence most often found to represent a record of Earth's history?
a)
air, lava, and fossils
b)
water, air, and rocks
c)
lava, water, and ice cores
d)
rocks, fossils, and ice cores
4.
Which is the best predictor of the relative age of a layer of rock?
a)
thickness of the layer
b)
position of the layer
c)
length of the layer
d)
size of the layer
5.
Which process most likely accounts for the major increase in atmospheric carbon dioxide over time?
a)
increased deforestation
b)
decreased deforestation
c)
increased use of fossil fuels
d)
decreased use of fossil fuels
6.
Which is used in radioactive dating?
a)
carbon-14
b)
index fossils
c)
hydrochloric acid
d)
law of superposition
7.
A geologist found 600-year-old sediments below a particular rock layer. Which will the geologist most likely find above the rock layer?
a)
450-year-old sediments
b)
600-year-old sediments
c)
650-year-old sediments
d)
1,000-year-old sediments
8.
A scientist finds an index fossil in layers of rock in both Africa and South America. What does this indicate about the ages of rocks?
a)
The African rock is older.
b)
The South American rock is older.
c)
The rocks are younger than the fossils.
d)
The rocks are approximately the same age.
9.
Which part of Earth's history is best shown by analysis of ice cores?
a)
changes in climate
b)
changes in plant growth
c)
changes in the amounts of precipitation
d)
changes in the formation of rock layers.
10.
A scientists finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?
a)
the birds living in the area of the bones
b)
the weather conditions in the area of the bones.
c)
the kinds of trees living in the area of the bones.
d)
the index fossils in the area of the bones.
11.
Which statement best describes the Law of Superposition?
a)
each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.
b)
In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.
c)
In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
d)
Rocks that form near volcanoes are older than surrounding rock.
12.
What do earthquakes tell scientists about the history of the planet?
a)
earth’s climate is constantly changing.
b)
the continents of Earth are continually moving.
c)
Dinosaurs became extinct about 65 million years ago.
d)
The oceans are much deeper today than millions of years ago.
13.
How do scientists know that some mountains were once at the bottom of an ocean?
a)
freshwater rivers flow to the ocean.
b)
saltwater fish are found in some mountain streams.
c)
dinosaur bones have been discovered in the mountains.
d)
marine fossils have been found on the peaks of some mountains.
14.
Which best describes how ice cores are important to the study of geologic history?
a)
they show unconformities, which signal changes in deposition.
b)
they hold index fossils, which are used to date the different ice cores.
c)
they contain evidence showing changes in the atmospheric composition over time.
d)
they follow the Law of Superposition, which gives reasons for extinctions of species.
15.
What do transitional fossils best support?
a)
the Theory of Biological Evolution
b)
the Law of Superposition
c)
the Theory of Geological Evolution
d)
the Theory of Continental Drift
16.
Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be concluded from this evidence?
a)
dinosaurs ate plants.
b)
dinosaurs were eaten by the mammals.
c)
dinosaurs lived on Earth before the mammals.
17.
Which is a process that allows scientists to COMPARE rock layers with others in a sequence to determine their age?
a)
radiometric dating
b)
absolute dating
c)
relative dating
18.
What can be used to find the exact age of a rock specimen?
a)
ice cores
b)
index fossils
c)
radioactive dating
19.
Which chemical compound is found in an ice core sample?
a)
carbon dioxide
b)
nitrogen dioxide
c)
carbon monoxide
20.
Which best represents the purpose of ice core drilling?
a)
to study changes in gravity
b)
to study changes in climate
c)
to determine the relative age of fossils
21.
What role to faults play in the Law of Superposition?
a)
faults create new types of rocks.
b)
faults are younger than the layers they cut through.
c)
faults are the same age as the layers they cut through.
22.
What are trace fossils?
a)
fossilized tracks or other evidence of an organisms activity
b)
fossilized wastes
c)
parts of the original organism
23.
Why are index fossils used as guides to determine the age of rocks?
a)
each index fossil lived during a specific geologic time period.
b)
all index fossils lived during all the periods of geologic time.
c)
index fossils are very rare and not commonly found in rocks.
24.
Which are scientists most likely to use to estimate the age of the Earth?
a)
rock layers
b)
soil samples
c)
organic fossils
d)
water samples
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