Earth's Layers

Answer Key - Grade 3 Science Worksheet - Building Confidence

Write the layer of Earth: crust, mantle, outer core, or inner core.

1. 1.

   If you could dig straight down, this layer would be the last one you reach. Layer: inner core

2. 2.

   This is the thickest layer, made of hot, slowly moving rock. Layer: mantle

3. 3.

   This liquid layer lies around the center of Earth. Layer: outer core

4. 4.

   This is the very center of Earth, a ball of solid metal. Layer: inner core

5. 5.

   This is the hottest layer, and it stays solid because of the great pressure. Layer: inner core

6. 6.

   This layer is hot enough that rock in it can slowly flow. Layer: mantle

7. 7.

   This layer is the thinnest, like the skin of an apple. Layer: crust

8. 8.

   Volcanoes erupt through this layer. Layer: crust