All About Earth

About what amount of the Earth's surface is covered by water?

• 1/2, 50%

• 4/7, 57%

• 3/4, 75%

• 6/7, 86%

Answer explanation

71% of the Earth's surface is covered by water.

Tags

NGSS.MS-ESS2-4

Match the layer of the Earth with the correct name.

• Outer Core

• 
• Inner Core

• 
• Crust

• 
• Mantle

• 

Answer explanation

Do you know what all the layers are called? Earth has distinct layers within it. The outer most and thinnest layer is the crust - what you are on right now. The next layer is the mantle, which is split into upper and lower sections. Beneath the mantle is the outer core, the layer surrounding the inner core. The inner core is at the center and is the hottest part.

Tags

NGSS.MS-ESS1-4

Reorder the layers of Earth, from the coolest (left) to the hottest (right).

• 
• 
• 
• 

Answer explanation

The outermost layer, the crust, is the coolest layer, with temperatures from 0 - 400 C°. The mantle is hotter than the crust but cooler than the outer core. The outer core is hotter than the mantle but cooler than the inner core. At the center of Earth is the hottest part, the inner core, from 5,000 - 7,000 C°.

Match the Layer # with the correct properties.

• Layer 4

• 5,000-7,000 C°, solid nickel & iron

• Layer 1

• 200-400 C°, solid rock, mostly igneous

• Layer 2

• 4,400-6,100 C°, liquid nickel & iron

• Layer 3

• 500-4,000 C°, molten rock, magma

Answer explanation

Layer 1, the crust, is solid rock - also the coolest. Layer 2, the mantle, is squishy - the rock is molten (magma). Layer 3, the outer core, is very hot - metals are in liquid state. Layer 4, the inner core, is solid because of extreme pressure.

Tags

NGSS.MS-ESS2-1

Which layer represents the CRUST?

• 200-400 C°, solid rock

• 500-4,000 C°, molten rock

• 4,400-6,100 C°, liquid nickel & iron

• 5,000-7,000 C°, solid nickel & iron

Answer explanation

The outer-most and thinnest layer is the crust, which is solid rock and cool. There are two parts to the crust, oceanic crust and continental crust.

Which layer represents the OUTER CORE?

• 200-400 C°, solid rock

• 500-4,000 C°, molten rock

• 4,400-6,100 C°, liquid nickel & iron

• 5,000-7,000 C°, solid nickel & iron

Answer explanation

The outer core is very hot, causing the iron and nickel metals to be in the liquid state. The outer core is also the 2nd hottest layer.

Lithospheric plates are mostly which layer?

• Crust

• Upper Mantle

• Lower Mantle

• Inner Core

Tags

NGSS.MS-ESS2-3

Which layer directly impacts the plates, changing their shape and structure?

• Crust

• Upper Mantle

• Lower Mantle

• Inner Core

How can the composition of plates be described?

• Continental Crust, under the land

• Oceanic Crust, under ocean basin

• Both Continental and Oceanic Crust

• Concrete Crust and Asphalt

Tags

NGSS.MS-ESS2-1

How can the Earth's crustal plates be described?

• Piled on top of one another, stacked

• Surrounded by melted rock, with gaps between

• Fit closely together, touching each other

• Each one is separated by an ocean

Tags

NGSS.MS-ESS2-3