The layers inside the Earth

Grade 6 Science Worksheet - Building Confidence

Circle the best answer.

1. Read this first

   Use this

   Cutaway of the Earth, not to scale:

3. 1.

   Ari labels a cutaway of the Earth. Layer D is the ball at the very center. Which layer is D?

   • The mantle
   • The inner core
   • The outer core
   • The crust
4. 2.

   On the same cutaway, layer B is the thick layer just under the thin outer shell. Which layer does Bo write for B?

   Use the picture in question 1.

   • The outer core
   • The mantle
   • The inner core
   • A sea of liquid lava
5. 3.

   Layer A is the thin outer shell that Kira stands on every day. Which layer is A?

   Use the picture in question 1.

   • The thickest layer
   • The core
   • The crust
   • The mantle
6. 4.

   A column of four blank boxes labeled first (surface) to fourth (center). Jun lists Earth's layers from the surface inward. Which layer comes second?

   • The crust
   • The mantle
   • The inner core
   • The outer core
7. 5.

   “Poster outline:” Luz is making a poster of Earth's layers. Which list goes from the outside in?

   • Crust, outer core, mantle, inner core
   • Crust, mantle, outer core, inner core
   • Inner core, outer core, mantle, crust
   • Mantle, crust, inner core, outer core
8. 6.

   Cutaway, not to scale, with the four layers labeled crust, mantle, outer core and inner core. Noah reads that one layer of the Earth is liquid metal. Which layer is it?

   • The crust
   • The inner core
   • The mantle
   • The outer core
9. 7.

   Cutaway, not to scale, with the inner core shaded and labeled hottest. The inner core is the hottest layer. Is it solid or liquid, by Pia's reading?

   • Solid, because the pressure is enormous
   • Solid, because it is the coolest layer
   • Liquid, like the mantle
   • Liquid, because it is the hottest
10. 8.

    “Cutaway, not to scale:” Lava pours out of volcanoes. Does that mean the whole mantle is liquid, as Ren wonders?

    • No; the mantle is mostly solid, with small magma pockets
    • Yes; the crust floats on liquid lava
    • No; the mantle is liquid metal
    • Yes; the mantle is a sea of lava

11. Table (USGS, rounded), Layer thickness (USGS), with columns Layer and Thickness

    Crust about 5 km under oceans and about 30 km under continents; mantle about 2,900 km; outer core about 2,200 km; inner core about 1,250 km.

12. 9.

    Using the USGS thickness table, Zee looks for the thinnest layer. Which is it?

    • The inner core, since it is in the middle
    • The outer core
    • The crust
    • The mantle, since the crust is thicker
13. 10.

    About how thick is the liquid outer core, according to the USGS table Esme is reading?

    • About 1,250 km
    • About 2,900 km
    • About 30 km
    • About 2,200 km