5.5A The structure of Earth

The earth is made up of ____ layers.

• one

• two

• three

• four

Answer explanation

The three layers of the Earth include crust, mantle and core.

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5.5 The structure of Earth

The earth is made up of three layers: _____, _____ and _____.

• the crust, the mantle and the core.

• the crust, the menthol and the core.

• the crush, the magma and the cord.

• the crust, the mantle and the corona.

The crust ranges from 6 to ____ kilometers in depth.

• 50

• 70

• 90

• 110

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5.5 The structure of Earth

The crust is made up of ___________.

• iron and nickel

• rocks and soil

• magma and soil

• grass and rocks

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5.5 The structure of Earth

The mantle has 2,900 kilometer in depth. It is made up of ____.

• magma

• granite

• rock

• diamond

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5.5 The structure of Earth

The third layer of the earth is called core. It has 3,470 kilometer in depth. It made up of heavy metal such as ____________.

• magma and molten rock

• iron and steel

• iron and nickel

• magma and silver

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5.5 The structure of Earth

The mantle has _____ kilometer in depth.

• 2,800

• 2,890

• 2,900

• 2,980

The core has _____ kilometer in depth.

• 3,370

• 3,470

• 3,740

• 3,340

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5.5 The structure of Earth

The core is the thickest layer of the Earth.

• True

• False

Answer explanation

Yes, it's true. The depth of the core is 3,470 km, which is thicker than the mantle (2,900 km) and the crust (6-70 km).

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5.5 The structure of Earth

The crust is the thinnest layer of the Earth.

• True

• False

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5.5 The structure of Earth