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    which process contributes to the formation of layers in protoplanets when unstable elements release particles and energy?

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    Which unit of geologic time is the oldest?

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    Precambrian

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    Which led to the formation of oceans after water on Earth's surface evaporated?

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    As Earth cooled, water in the atmosphere condensed.

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    1/10 Created by Sticksarecool

    Terms in this set (10)

    Which unit of geologic time is the oldest?

    Precambrian

    Which led to the formation of oceans after water on Earth's surface evaporated?

    As Earth cooled, water in the atmosphere condensed.

    How did the formation of the ozone layer contribute to the existence of life on Earth?

    It blocked the Sun's harmful UV rays.

    Which unit of geologic time began 65.5 million years ago and continues to the present?

    Cenozoic era

    Which best explains how gravity contributes to the formation of layers in protoplanets?

    Gravity attracts materials and causes compaction, which produces heat and leads to the melting, sinking, and rising of materials.

    How long ago did oceans begin to form?

    3800 MYA

    Which period is older than the Triassic period?

    Cambrian

    Why is radioactive dating important when approximating the age of Earth?

    Scientists can determine the order of when rocks formed on Earth.

    What was the significance of collisions of dust, rock, and ice during Earth's formation?

    to modify the density of materials present on Earth

    What could a scientist do to determine what era the Eocene period belongs to on the geologic time scale?

    study information related to the Cenozoic era

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    Active 1 TIME REMAINI 2 3 15 10 54:42 Which process contributes to the formation of

    layers in protoplanets when unstable elements release particles and energy?

    compaction O evaporation O radioactive decay O collision of space materials

    Science Earth Science SCIENCE 3041

    Answer & Explanation

    Solved by verified expert

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    Geologic Time VHS

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    Science

    9th -

    12th

    9th - 12th Geologic Time VHS

    MICHAEL KOWAL 2020-21

    24 plays

    23 Qs

    Show Answers See Preview 1. Multiple-choice 30 seconds 5 pts Q.

    Which best describes the geologic time scale?

    answer choices

    It explains why events happen throughout Earth’s history.

    It presents the correct sequence of events in Earth’s history.

    It is used to determine the absolute dates in years for different periods.

    It was created by scientists who studied index fossils and climate change.

    2. Multiple-choice 30 seconds 5 pts Q.

    Study the geologic time scale. The Eocene period exists in Earth’s history around 34 MYA.

    What could a scientist do to determine what era the Eocene period belongs to on the geologic time scale?

    answer choices

    learn what happened during Precambrian time

    study information related to the Cenozoic era

    view the timing of events in the Mesozoic era

    research events that happened during the Paleozoic era

    3. Multiple-choice 30 seconds 5 pts Q.

    The table shows index fossils. Which conclusion about Paradoxides pinus is supported by the information in the table?

    answer choices

    Life forms existed during the Cambrian period.

    Similar fossil species formed after the Devonian period.

    This fossil species first appeared during the Cenozoic era.

    Different life forms were surviving during Precambrian time.

    4. Multiple-choice 30 seconds 5 pts Q.

    What does the geologic time scale confirm about the Cretaceous period?

    answer choices

    It ended during the Cenozoic era.

    It ended during the Mesozoic era.

    It started before Precambrian time.

    It started before the Cambrian period.

    5. Multiple-choice 30 seconds 5 pts Q.

    What information does the geologic time scale provide?

    answer choices

    explanation of how Earth formed

    places where dinosaurs roamed on Earth

    reasons why organisms evolve into different species

    information about when plants first appeared

    6. Multiple-choice 30 seconds 5 pts Q.

    Study the image. Which describes the geological time of the first land plants?

    answer choices

    Conifers appeared after the first flowering plants.

    Conifers first appeared around 182 million years ago.

    The first flowering plants appeared around 240 million years ago.

    The first flowering plants were introduced toward the end of the Mesozoic era.

    7. Multiple-choice 30 seconds 5 pts Q.

    Study the image about geologic time. During which period did humans first appear on Earth?

    answer choices Quaternary Neogene Paleogene Cenozoic 8. Multiple-choice 30 seconds 5 pts Q.

    Study this image of a geologic time scale. How long ago did invertebrates become common on Earth?

    answer choices

    1.6 million years ago

    132 million years ago

    410 million years ago

    520 million years ago

    9. Multiple-choice 30 seconds 5 pts Q.

    Which unit of geologic time began 65.5 million years ago and continues to the present?

    answer choices Cenozoic era Mesozoic era Permian period Precambrian time 10. Multiple-choice 30 seconds 5 pts Q.

    Which unit of geologic time is the oldest?

    answer choices Cenozoic Mesozoic Ordovician Precambrian 11. Multiple-choice 30 seconds 5 pts Q.

    Which period is older than the Triassic period?

    answer choices Cambrian Cretaceous Jurassic Paleogene 12. Multiple-choice 30 seconds 5 pts Q.

    Why is radioactive dating important when approximating the age of Earth?

    answer choices

    Scientists can identify different life forms using index fossil records.

    Scientists can examine how temperature changes within Earth’s interior.

    Scientists can determine the order of when rocks formed on Earth.

    Scientists can analyze changes in chemical concentration of atmospheric gases.

    13. Multiple-choice 30 seconds 5 pts Q.

    What was the significance of collisions of dust, rock, and ice during Earth’s formation?

    answer choices

    to modify the density of materials present on Earth

    to facilitate heat absorption from the surrounding space

    to blow away a strong burst of particles from the first atmosphere

    to harden materials to form different parts of Earth’s layers

    14. Multiple-choice 30 seconds 5 pts Q.

    How long ago did oceans begin to form?

    answer choices 12.5 MYA 137 MYA 285 MYA 3800 MYA 15. Multiple-choice 30 seconds 5 pts Q.

    Which evidence is most likely used to indicate the beginning of solar system formation?

    answer choices

    Materials combined to form a mass.

    Materials were pulled together by gravity.

    Water condensed and collected to form oceans.

    Different species of microorganisms lived on Earth.

    16. Multiple-choice 30 seconds 5 pts Q.

    Study the graph about oxygen content of Earth’s atmosphere. Which describes oxygen content as Earth evolved over time?

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