Earth's Structure and Rocks Quiz
10 Questions
5 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main composition of the Earth's mantle?

  • Iron and nickel
  • Calcium and sulfur
  • Silicon, oxygen, aluminum, iron, and magnesium (correct)
  • Copper and zinc

    • Which of the following rocks is primarily monomineralic?

  • Basalt
  • Gneiss
  • Dunite (correct)
  • Granite

    • What is the density range of the Earth's core?

  • 9.0 to 12 g/cm³ (correct)
  • 3.0 to 4.5 g/cm³
  • 1.0 to 2.0 g/cm³
  • 5.5 g/cm³

    • Which type of rock constitutes the majority of the Earth's crust by volume?

    <p>Sedimentary rocks</p> Signup and view all the answers

    Which mineral is an example of a monomineralic rock?

    <p>Olivine</p> Signup and view all the answers

    What is the thickness of the Earth's inner core?

    <p>3,500 km</p> Signup and view all the answers

    Which type of scientific study focuses on the origin of rocks?

    <p>Petrogenesis</p> Signup and view all the answers

    Which type of rock is classified as igneous?

    <p>Basalt</p> Signup and view all the answers

    What is the overall density of the Earth?

    <p>5.5 g/cm³</p> Signup and view all the answers

    What percentage of the Earth's crust is made up of igneous rocks?

    <p>18%</p> Signup and view all the answers

    Study Notes

    Mantle

    • Thickness: 2,900 km
    • Composition: silicon, oxygen, aluminium, iron, and magnesium
    • Density: 3.0 to 4.5 g/cm³

    Core

    • Location: Inner portion of the Earth
    • Thickness: 3500 km
    • Composition: Metals like iron (Fe) and nickel (Ni)
    • Density: 9.0 to 12 g/cm³
    • Inner core: solid Fe and Ni
    • Outer core: melted Fe and Ni

    Density of Earth

    • Overall density: 5.5 g/cm³

    Rocks and Minerals

    • Rock: Naturally occurring, hard mass of mineral matter formed after molten magma solidifies
    • Composition: Composed of two or more rock-forming minerals (e.g., granite, basalt, gneiss)
    • Monomineralic rocks: Composed of only one mineral (e.g., olivine, dunite, forsterite)
    • Note: Most rocks are composed of several minerals, not a single mineral
    • "Pure" monomineralic rocks rarely exist in nature

    Petrology and Petrography

    • Petrology: Study of rocks, including their origin
    • Petrography: Description of rocks, including chemical composition and crystalline structure

    Rocks in the Earth's Crust

    • Up to 5 km:
      • Igneous rocks: 18%
      • Sedimentary rocks: 74%
    • Whole Earth's Crust:
      • Igneous rocks: 95%
    • Examples of sedimentary rocks:
      • Shales (52%)
      • Sandstones (15%)
      • Limestone & Dolomite (7%)
      • Others (8%): conglomerate, chert

    Studying That Suits You

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

    Quiz Team

    Description

    Test your knowledge on the Earth's structure, including the mantle and core, as well as the properties of different rocks and minerals. Explore concepts like density and petrology to understand the composition and classification of Earth's materials.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser