Earth's History
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20 QuestionsShow answers
  • Question 1
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    Q.

    The diagram shows different layers of sedimentary rock. Each layer is labeled with a letter.

    answer choices

    The left part of Layer B is younger than the right part.

    The left part of Layer F is the same age as Layer M.

    Layer R is older than Layer M

    Layer I is older than Layer B

  • Question 2
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    Q.

    The geologic map below shows several rock formations exposed when a road is cut through a hillside.


    Which formation in this geological map is youngest?

    answer choices

    1

    2

    3

    4

  • Question 3
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    Q.

    A fossil discovered in Colorado dates from the early Mesozoic era. A year later a similar fossil is found in Wyoming that also dates from the early Mesozoic era. These two organisms most likely lived in

    answer choices

    the same environment at about the same time.

    the same environment at different times.

    different environments at about the same time.

    different environments at different times.

  • Question 4
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    Q.

    Which of these provides the BEST evidence that the distribution of Earth’s oceans has changed over time?

    answer choices

    hot spots on ocean floors

    seismic activity along plate boundaries

    sediment buildup on continental slope

    marine fossils found on land masses

  • Question 5
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    Q.

    Scientists estimate that if index fossils were deposited during a certain time frame, then the entire rock layer was also deposited at the same time.


    A scientist finds Trophite fossils. According to the chart above, in what era and period was this rock layer deposited?

    answer choices

    Cenozoic era; Tertiary period

    Mesozoic era; Triassic period

    Paleozoic era; Permian period

    Paleozoic era; Mississippian period

  • Question 6
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    Q.

    Which method would be BEST for scientists to use to determine the absolute age of a Precambrian igneous rock?

    answer choices

    Index fossils

    law of superosition

    radiometric dating

    law of original horizontality

  • Question 7
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    Q.

    A teacher gave students this diagram of rock layers. The teacher directed the students to determine the relative age of each rock layer based only on the information presented in the diagram.


    Which method can BEST be used by the students to determine the relative age of these layers?

    answer choices

    radiometric dating

    rock type evaluation

    the law of superposition

    principle of uniformitarianism

  • Question 8
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    Q.

    Which environmental condition MOST likely existed at the time a fossil formed?

    answer choices

    Organism remains were deposited in an area of open space

    Organism remains were covered by lava flow.

    Organism remains were buried with little oxygen.

    Organism remains were buried in an area where a lot of erosion occurred.

  • Question 9
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    Q.

    Certain fossils can be used to help determine the age of the rock layer in which the fossils are found. Which type of fossil is BEST to use when making this determination?

    answer choices

    marine mammal fossil

    swamp fern fossil

    trace fossil

    index fossil

  • Question 10
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    Q.

    Use this geologic profile to answer the following question.


    Which of the following BEST describes the fossil at Point 3 when compared with the fossils at Points 1 and 2?

    answer choices

    The fossil at Point 3 is less common

    The fossil at Point 3 is smaller.

    The fossil at Point 3 is older.

    The fossil at Point 3 is more complex

  • Question 11
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    Q.

    When two fish die, Fish A sinks to the bottom of a lake and Fish B washes up on the rocky lake shore.


    Why is a fossil more likely to form from the body of Fish A than from the body of Fish B?

    answer choices

    Soft parts of the fish will decay more quickly in the water.

    Sediments in the water will quickly cover the fish

    Scavengers in the water will eat the remains of the fish.

    Currents in the water will move the fish.

  • Question 12
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    Q.

    Trilobites are extinct animals that lived in the oceans. Fossils of these animals can be found in dry areas such as Cincinnati. What does this indicate?

    answer choices

    Trilobites now live underground.

    Trilobites are the ancestors of jellyfish.

    Cincinnati was once covered by the ocean where trilobites lived.

    The environment changed, creating small saltwater lakes in Cincinnati.

  • Question 13
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    Q.

    Structural geologists study rock formations to determine the type of environment in which the rocks formed and the events that shaped the rocks. Paleontologists study fossils found in rock formations. Scientists in both these fields have a common interest in discovering the:

    answer choices

    history and processes of Earth.

    elements that make up the crust.

    types of minerals that make up sediments.

    relationships between Earth and other planets.

  • Question 14
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    Q.

    A student has made the geologic column that you see here.

    answer choices

    fossils

    soil type

    environment

    plate tectonics

  • Question 15
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    Q.

    A scientist drew some diagrams of ancestors of elephants based on fossil evidence.


    Which is the BEST conclusion that can be made from comparing the diagrams?

    answer choices

    Elephant species have changed over time.

    Ancient elephants were better adapted than modern elephants

    Elephant habitats have remained the same over time.

    Elephant fossil evidence is widespread and complete

  • Question 16
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    Q.

    Scientists are able to conclude that a forested ecosystem existed in Antarctica millions of years ago by studying:

    answer choices

    the current climate

    the fossil record

    glacial movement

    seafloor spreading

  • Question 17
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    Q.

    Several dinosaur bones are discovered buried in volcanic ash. The type of dinosaur can BEST be identified by

    answer choices

    knowing the location where the fossils were found.

    establishing an inventory of bones collected

    comparing to characteristics of known dinosaurs.

    knowing the absolute age of the fossils.

  • Question 18
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    Q.

    Which statement best describes the Law of Superposition?

    answer choices

    Each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.

    In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.

    In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.

    Rocks that form near volcanoes are older than surrounding rock.

  • Question 19
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    Q.

    How do scientists know that some mountains were once at the bottom of an ocean?

    answer choices

    Freshwater rivers flow to the ocean.

    Saltwater fish are found in some mountain streams.

    Dinosaur bones have been discovered in the mountains.

    Marine fossils have been found on the peaks of some mountains.

  • Question 20
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    Q.

    What do earthquakes tell scientists about the history of the planet?

    answer choices

    Earth’s climate is constantly changing.

    The continents of Earth are continually moving.

    Dinosaurs became extinct about 65 million years ago.

    The oceans are much deeper today than millions years ago.

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