Earth's History & Geologic Time Review
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23 QuestionsShow answers
  • Question 1
    20 seconds
    Q. According to the law of superposition, which layer is the youngest?
    answer choices
    A
    B
    C
  • Question 2
    20 seconds
    Q. Which division on the geologic time scale is the shortest?
    answer choices
    epoch
    era
    eon
    period
  • Question 3
    30 seconds
    Q. If an index fossil is found in two rock layers that are separated by an ocean, what do you know about the relationship between the two rock layers?
    answer choices
    they are about the same age
    they used to be in the same area
    the are made of the same kind of rock
    the rock layers are unrelated
  • Question 4
    30 seconds
    Q. Which type of dating method can be used on rock layers by applying the Law of Superposition?
    answer choices
    relative dating
    absolute dating
    radioactive dating
    radiometric dating
  • Question 5
    30 seconds
    Q.
    answer choices
    1
    2
    3
    5
  • Question 6
    30 seconds
    Q. How old do Paleontologists believe the Earth is?
    answer choices
    2015 years old
    3.6 billion years old
    4.6 billion years old
    4.6 million years old
  • Question 7
    30 seconds
    Q. Most events on the geologic timeline happened:
    answer choices
    a long time ago, near the beginning
    more recently, near the modern time
    evenly spread out
    right in the center of the timeline
  • Question 8
    30 seconds
    Q. Which of the following questions can be answered by studying  these fossil layers? 
    answer choices
    What did the fish eat?
    Which organisms lived before/after/or at the same time?
    Why did dinosaurs become extinct?
    Are reptiles the ancestors to birds or fish?
  • Question 9
    30 seconds
    Q. When scientists use logic to determine the age of one fossil compared to another, they use this type of dating.
    answer choices
    Relative
    Carbon
    Absolute
  • Question 10
    30 seconds
    Q. Relative age of a rock is the number of years that have passed since the rock formed?            
    answer choices
    true
    false
  • Question 11
    30 seconds
    Q. Radiometric dating is often referred to as 
    answer choices
    total age.
    absolute dating.
    historic age.
    geologic age.
  • Question 12
    30 seconds
    Q. gaps in rock layers caused by erosion are called
    answer choices
    law of superposition
    unconformities
    uniformitarianism
    relative dating
  • Question 13
    30 seconds
    Q. the time it takes for half the atoms in an element to decay into something else is called
    answer choices
    absolute age dating
    relative age dating
    half-life
    extinct
  • Question 14
    30 seconds
    Q. The ________ states that layers of sediment were originally deposited horizontally under the action of gravity.
    answer choices
    law of superposition
    law of horizontality 
    uniformitarianism 
    unconformities
  • Question 15
    30 seconds
    Q. states that the geologic feature which cuts another is the younger of the two features
    answer choices
    law of horizontality
    cross cutting relationships
    law of superposition
    uniformitarianism
  • Question 16
    30 seconds
    Q. Why is the fossil record incomplete?
    answer choices
    fossils get eroded away over time
    most organisms never became fossils
    scavengers and decomposers eat them too quickly
    all of the above
  • Question 17
    30 seconds
    Q. The Geologic Time Scale is a record of what?
    answer choices
    old geologists
    sweet geology music
    the known history of rocks and fossils
    a list of every living thing ever
  • Question 18
    30 seconds
    Q. What 2 things make a good index fossil?
    answer choices
    Good looks and a great smile
    widespread and on Earth of a short time
    widespread and on Earth for a long time
    only found in Clinton Twp and in every rock layer
  • Question 19
    30 seconds
    Q. Which is the correct order of geologic time?
    answer choices
    Era >Eon >Period >Epoch
    Eon >Era >Period >Epoch
    Epoch >Period >Era >Eon
    Era >Eon > Epoch >Period
  • Question 20
    30 seconds
    Q. An index fossil can help you 
    answer choices
    get to know new people 
    plan your next vacation 
    determine the relative age of a rock layer
    determine the absolute age of a rock layer 
  • Question 21
    30 seconds
    Q. a break in the Earths crust 
    answer choices
    fault 
    intrusion 
    extrusion 
    index fossil 
  • Question 22
    30 seconds
    Q. Which of the following is the youngest?
    answer choices
    Intrusion X
    Fault Y
    Layer Z
    Fossil W
  • Question 23
    30 seconds
    Q. Which of the following is the oldest?
    answer choices
    Layer L
    Intrusion D
    Intrusion H
    Layer E
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