Which layer is made up of iron and nickel?

• Crust
• Mantle
• Inner Core
• Lithosphere

What are the two types of crust?

• top crust and bottom crust
• oceanic crust and continental crust
• pizza crust and toast crust
• lithocrust and asthenocrust

Which physical layer is the thinnest?

• crust
• mantle
• core

Which compositional layer is made of iron and some nickel?

• crust
• mantle
• core

Which mechanical layer is made of solid iron and some nickel?

• Asthenosphere
• Outer core
• Lithosphere
• Inner core

What type of heat transfer in found in Earth"s asthenosphere?

• Conduction
• Convection
• Radiation
• I don't know

Which sublayer is made up of the crust and upper mantle?

• Inner Core
• Outer Core
• Lithosphere
• Asthenosphere

Geologists' main evidence about the structure of Earth's interior comes from

• temperature measurements in deep mines
• observations of other planets
• exploration of caves
• rock samples and seismic waves

What is the correct order (starting from the surface) of Earth's layers?

• crust, outer core, inner core, mantle
• mantle, outer core, inner core, crust
• crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle

Earth's inner core is...

• a dense ball of solid iron and nickel.
• a layer of molten iron and nickel.
• a layer of hot rock.
• a layer of rock that forms Earth's outer skin.