Inside Our Earth

The thinnest layer of the earth is the..

• mantle

• outer core

• crust

• inner core

The _____________ is about 2,900 km thick and has rocks in the form of magma.

Granite, chalk,clay and salt are examples of

• rocks

• minerals

• fossils

• metals

Which layer of earth has high temperature

• Mantle

• Crust

• outer core

• inner core

Ocean crust mainly consists of_________

• silica and magnesium

• silica and alumina

• nickel and iron

• all of the above

Just like a/an ________ ,the earth is made up of several concentric layers with one inside another.