Which is the thinnest layer of the earth?

• Mantle

• Inner Core

• Crust

• Outer Core

How deep is the continental crust?

• 50 km

• 34.7 km

• 5 km

• 35 km

How deep is the crust on oceanic crust?

• 5 m

• 5 km

• 35 km

• 2021 km

The mantle extends up to _______ ?

• 2020 km

• I don't know?

• 2900 km

• 3500 km

The core has a radius about ________ ?

• What is radius?

• 3500 km

• 6371 km

• 7564 km

The core is mainly made up of _______ ? (write in small letters only)

In search for oil, engineers dug a hole about _______ km deep. (write number)

It takes _______ km to reach the center of the earth (write number only)

The crust forms __% of the earth

• 1%

• 1.5%

• 2%

• 2.5%

The mantle forms ________% and the core makes up _______% of the earth

• 65%, 34%

• 84%, 15%

• 76%, 23%

• 12%, 100%