Science · Earth's structure

Layers of the Earth Quiz

Crust, mantle, outer core and inner core: what each layer is like.

  • 🎓 Grades 4–6
  • 🧪 Science
  • 📐 MS-ESS2-3
  • ❓ 20 questions
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  1. What is the outermost layer of Earth called?

    • A Outer core
    • B Mantle
    • C Crust
    • D Inner core
  2. Which is Earth's thickest layer?

    • A Atmosphere
    • B Inner core
    • C Mantle
    • D Crust
  3. Which layer of Earth is liquid metal?

    • A Lithosphere
    • B Crust
    • C Outer core
    • D Inner core
  4. Which layer is solid metal at the very center?

    • A Crust
    • B Mantle
    • C Inner core
    • D Outer core
  5. What metals make up most of Earth's core?

    • A Iron and nickel
    • B Aluminum and lead
    • C Copper and tin
    • D Gold and silver
  6. Which is Earth's thinnest layer?

    • A Mantle
    • B Inner core
    • C Outer core
    • D Crust
  7. Which layer is the hottest?

    • A Inner core
    • B Crust
    • C Mantle
    • D Ocean floor
  8. Why is the inner core solid even though it is so hot?

    • A Huge pressure squeezes it
    • B It is made of ice
    • C It is made of rock only
    • D It is cooled by oceans
  9. Where do we live?

    • A In the inner core
    • B In the mantle
    • C On the outer core
    • D On the crust
  10. Which crust is thicker, oceanic or continental?

    • A Oceanic
    • B Continental
  11. The crust and the top of the mantle together are the…

    • A Lithosphere
    • B Biosphere
    • C Hydrosphere
    • D Atmosphere
  12. Large pieces of the lithosphere that move are called…

    • A Cores
    • B Craters
    • C Magma chambers
    • D Tectonic plates
  13. What moves slowly in the mantle and helps move plates?

    • A Ice sheets
    • B Wind
    • C Ocean water
    • D Hot rock in convection currents
  14. How have scientists learned about Earth's deep layers?

    • A By using telescopes
    • B By studying earthquake waves
    • C By digging tunnels to the center
    • D By drilling to the core
  15. What is the softer, flowing layer of the upper mantle called?

    • A Crust
    • B Lithosphere
    • C Inner core
    • D Asthenosphere
  16. The ocean floor is made of which type of crust?

    • A Mantle
    • B Continental
    • C Core
    • D Oceanic
  17. About how far is it from Earth's surface to its center?

    • A About 64 km (40 miles)
    • B About 640 km (400 miles)
    • C About 64,000 km (40,000 miles)
    • D About 6,400 km (4,000 miles)
  18. Which layer makes Earth act like a big magnet?

    • A Mantle top
    • B Atmosphere
    • C Crust
    • D Outer core
  19. Which list goes from the surface to the center?

    • A Crust, mantle, outer core, inner core
    • B Crust, outer core, mantle, inner core
    • C Mantle, crust, inner core, outer core
    • D Inner core, outer core, mantle, crust
  20. A model of Earth's layers is often compared to a…

    • A Bowl of soup
    • B Peach with a pit
    • C Ice cube
    • D Paper airplane

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