Earth's Layers & Spheres Summative Practice

Earth's inner core is

• a layer of hot rock

• a solid ball of iron and nickel

• a layer of liquid iron and nickel

Which layer of the earth is a pure liquid?

• crust

• outer core

• inner core

The soft layer of rock in the mantle that can act like a liquid and a solid is called the

• crust

• asthenosphere

• lithosphere

The crust and the uppermost mantle make up the solid layer of hard rock called the

• lithosphere

• asthenosphere

• outer core

How does temperature change as you move from the crust to the core?

• it gets hotter

• it stays the same

• it gets colder

What is the correct order (starting from the surface) of Earth's layers?

• Crust, Mantle, Outer Core, Inner Core

• Crust, Inner Core, Outer Core, Mantle

• Crust, Inner Core, Mantle, Outer Core

• Crust, Outer Core, Inner Core, Mantle

Which layer is composed mostly of iron?

• Z

• V

• Y

• X

Which layer of the Earth is the thinnest?

• Inner core

• Mantle

• Outer core

• Crust

Which of the following best describes Earth's asthenosphere?

• Solid rock that is broken into plates

• Dense molten rock that moves the crust on convection currents

• Metal rock at the center of the Earth

How does temperature change as you move from the crust to the core?

• it gets cooler

• it stays the same

• it gets hotter

• the core is frozen