Layers of the Earth

Among the following, which describes the crust?

• it composes 1 % of the Earth's total volume

• it is the thickest layer

• it's in liquid state

• it is in solid state

Why is the outer and inner cores also called as NiFe layer?

• It is as cold as a knife

• It is composed of lots of sodium, iron, silica, and carbon

• It mostly contains nickel and iron

• It is the only layer that has nickel and iron

Which among the following describes the mantle?

• it is the thinnest layer

• it is the hottest layer

• it is the only solid layer

• it is the largest layer

Where do convection currents occur?

• crust

• mantle

• outer core

• inner core

This layer's temperature can reach to about 5000 degrees celsius or more.

• crust

• mantle

• outer core

• inner core

What is the thickness of the inner core?

• 5-70 km

• 1,200 km

• 2200 km

• 2900

What is the characteristic of the asthenosphere?

• fluid

• liquid

• solid

• gaseous

In which layer can you find living things?

• crust

• mantle

• outer core

• inner core

Which is found in between the crust and the mantle?

• Repiti Discontinuity

• Mohorovicic Discontinuity

• Lehman Discontinuity

• Conrad Discontinuity

The only layer that is liquid in state is _________.

• crust's oceans

• mantle

• outer core

• inner core