Earth

Which layers of Earth are mostly made of solid material?

• inner core and outer core
• crust and inner core
• crust and mantle
• mantle and outer core
  

The inner core of Earth is solid because of the

• rate of rotation.
• extreme temperature.
• amount of pressure.
• magnetic field.
  

Which of these correctly lists Earth’s layers in order from the center to the surface?

• outer core, inner core, asthenosphere, lithosphere
• asthenosphere, lithosphere, outer core, inner core
• inner core, asthenosphere, lithosphere, outer core
• inner core, outer core, asthenosphere, lithosphere
  

A student uses clay to build models of an oceanic plate and a continental plate. What characteristic CANNOT be accurately represented by the models?

• the shapes of plates
• the relative sizes of plates
• the relative densities of plates
• the arrangement of plates relative to one another
  

Which of the following has the greatest direct influence on movement of the lithosphere?

• the Sun
• the Moon
• Earth’s core
• Earth’s mantle
  

Which section of Earth is composed primarily of liquid metal?

• crust
• mantle
• outer core
• inner core

Earth is made of different layers that have varying characteristics. Which is the thickest layer?

• the mantle
• the inner core
• the outer core
• the crust
  

A difference between the oceanic crust and the continental crust is that the oceanic crust is

• composed chiefly of sedimentary rocks.
• more dense than the continental crust.
• older than the continental crust.
• continually being created.
  

The interior of Earth is made up of several physically different layers. The solid layer of Earth that moves over a viscous layer is called the

• core
• crust
• asthenosphere
• atmosphere

A student uses clay to construct a model of Earth. Which layer of the model should be the thinnest layer?

• the layer representing the mantle
• the layer representing the outer core
• the layer representing the inner core
• the layer representing the crust