Earth's Layers
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is a fault in the context of geology?

  • A process of erosion
  • A type of rock formation
  • A break in the rocks where the layers can slide past each other (correct)
  • A type of stratification

    • What happens to the layers when a fault occurs?

  • The layers disappear
  • The layers shift up or down (correct)
  • The layers merge together
  • The layers remain unchanged

    • What is the analogy used to explain how faults work?

  • A growing tree root (correct)
  • A burrowing rodent
  • A flowing river
  • A developing mountain

    • What is the correct order of formation of the layers in the diagram?

    <p>C, B, A, D</p> Signup and view all the answers

    What is the intrusion in the diagram?

    <p>A separate event that occurs after the layers are formed</p> Signup and view all the answers

    What can be inferred about the layers on both sides of the intrusion?

    <p>They are formed before the intrusion</p> Signup and view all the answers

    What is the significance of the fault line in the diagram?

    <p>It shows where the layers can slide past each other</p> Signup and view all the answers

    What can be inferred about the relative age of the layers?

    <p>The bottom layer is the oldest</p> Signup and view all the answers

    What happens to the intrusion at the fault?

    <p>It splits and moves with the layers</p> Signup and view all the answers

    What is the correct order of events in the diagram?

    <p>Layer formation, intrusion, fault</p> Signup and view all the answers

    Study Notes

    Layers Within the Earth

    • The concept of layers within the Earth can be compared to a giant jawbreaker, with each layer representing a record of time passing, and the deeper you go, the farther back in the history of the rock layers.
    • The layers of rock beneath our feet are similar to the layers of candy in a jawbreaker, with each layer forming a sequence of events.

    Relative Dating

    • Relative dating is a method used in geology to determine the order of events without using actual ages.
    • It compares rocks and rock layers (strata) by looking at what is immediately around them.
    • The general rule of thumb is that older layers are found at the bottom and newer layers are found at the top, relative to the other layers.
    • This method only provides a sequence of what happened before or after some other event, not an actual date the event happened or a true age.

    Disruptions Within the Layers

    • Rocks don't always form in layers; sometimes they melt upward through existing rock, forming an intrusion.
    • An intrusion is when molten rock invades preexisting layers, and can occur where volcanoes are forming.
    • Different types of intrusions include batholiths, sills, dikes, and laccoliths.
    • Faults can also disrupt the layers of rocks, causing them to shift up or down and change their appearance.

    Understanding the Layers

    • A diagram can be used to summarize the information about the layers and intrusions.
    • The diagram shows three strata, two of which are cut by an intrusion, with the bottom layer being the oldest and the top layer being the youngest.
    • The intrusion happened after the formation of the bottom two layers, and before the formation of the top layer.
    • A fault can also be seen in the diagram, which happened after the intrusion and caused the layers to shift and move past each other.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Learn about the layers of the Earth, from the crust to the core, and how they compare to layered candies like gobstoppers and jawbreakers.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser