The diagram shows the composition of the surface of Earth. What BEST summarizes the composition of the surface of Earth?

• Three-fourths of Earth’s surface is land.

• One-fourth of Earth’s surface is water.

• Earth’s surface contains more land than water.

• Earth’s surface contains more water than land.

Tags

NGSS.5-ESS2-2

The diagram shows the layers of Earth’s interior. Which layer is most observed and studied by scientists?

• crust

• mantle

• inner core

• outer core

The diagram shows the layers of Earth. Which part of the diagram represents the mantle?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS2-1

Why did Earth most likely form into distinct, separate layers?

• because volcanic lava became deeply buried in the core

• because of the density of the rocks at the time of Earth’s formation

• because rocks with hotter temperatures sank to the center of Earth

• because an asteroid collided with Earth, forming many different layers

What is the composition of the outer core of Earth?

• solid iron only

• liquid iron only

• solid iron and nickel

• liquid iron and nickel

Tags

NGSS.MS-PS1-1

Which layer of Earth has the most mass?

• the crust

• the mantle

• the inner core

• the outer core

Which best describes the mantle?

• liquid metal

• dense solid metal ball

• dry land and ocean flora

• rock that has convection currents

Which statement explains the relationship between Earth’s mantle and outer core?

• The outer core is less dense and closer to the surface than the mantle.

• The outer core is more dense and closer to the surface than the mantle.

• The outer core is less dense and farther from the surface than the mantle.

• The outer core is more dense and farther from the surface than the mantle.

Which statement best explains the relationship between Earth’s outer core and inner core?

• The outer core is less dense and closer to Earth’s surface than the inner core.

• The outer core is more dense and closer to Earth’s surface than the inner core.

• The outer core is less dense and farther from Earth’s surface than the inner core.

• The outer core is more dense and farther from Earth’s surface than the inner core.

Which choice describes the layer of Earth just below the mantle?

• oceanic crust

• solid outer core

• liquid outer core

• continental crust