Earth Unit, Lessons 2-3

The ______________ has four main layers.

• mantle

• core

• earth

• crust

The crust, mantle, outer core and inner core are the four main _______________ of the earth.

• earth

• rock

• surface

• layers

The ________________ is the outermost layer of the earth.

• crust

• rock

• core

• mantle

The _______________ is between the crust and the core.

• surface

• rock

• mantle

• layers

Tags

NGSS.MS-ESS2-1

The _______________ is in the center of the earth.

• core

• surface

• solid

• rock

The core of the earth is under pressure and is ______________.

• solid

• layers

• mantle

• earth

Earth’ s crust is made of _____________ and can break during earthquakes.

• rock

• solid

• crust

• core

What shape is the core of the Earth?

• uneven sides

• no particular shape, just jagged edges

• square

• round

What two metals did the egg yolk represent in the activity?

• silver and gold

• heavy and light

• iron and nickel

• soft and hard

How many systems (spheres) does Earth have?