Match the layer with its correct description.

Question

1. inner core
Solid rock about 720 km thick that flows from plasticity. Temperature is about 850°C.
2. outer core
Plates that average about 30km in thickness and 25°C in temperature.
3. lower mantle
Solid rock about 2,200 km thick. Temperature is about 3,000°C.
4. upper mantle (asthenosphere)
Very dense liquid of iron and sulfur about 2250 km thick. Temperature is about 4,000°C.
5. crust (lithosphere)
Made of solid iron about 1,200 km thick. Temperature is about 7,000°C.

Answer 1

Here’s the correct matching of each layer with its description:

1. inner core

   • Made of solid iron about 1,200 km thick. Temperature is about 7,000°C.

2. outer core

   • Very dense liquid of iron and sulfur about 2250 km thick. Temperature is about 4,000°C.

3. lower mantle

   • Solid rock about 2,200 km thick. Temperature is about 3,000°C.

4. upper mantle (asthenosphere)

   • Solid rock about 720 km thick that flows from plasticity. Temperature is about 850°C.

5. crust (lithosphere)

   • Plates that average about 30km in thickness and 25°C in temperature.