Solar System P4

Which of the following lists Earth's compositional layers starting with Earth's center and ending with the outermost layer.

• mantle, crust, core

• crust, mantle, core

• crust, core, mantle

• core, mantle, crust.

What is the main cause of earthquakes?

• large ocean waves called tsunamis

• movement of tectonic plates

• erosion of topsoil by rivers

• animals burrowing underground

In the Earth's mantle, heat is transferred in large convection currents. Within these currents;

• cooler and hotter rock rise but do not sink

• hotter rock rises and hotter rock sinks

• hotter rock rises and cooler rock sinks

• hotter and cooler rock sink but do not rise

Which of the following statements is true?

• The Earth's lithosphere is made up of tectonic plates.

• The Earth's mantle is made up of continents.

• The Earth's mantle is made up of tectonic plates.

• The Earth's lithosphere is entirely made up of liquid magma.

Which choice correctly completes the sentence?

___ reaches the Earth's surface through ___, then turns into ____.

• Magma; earthquakes; lava

• Lava; volcanoes; magma

• Lava, earthquakes,; magma

• Magma; volcanoes; lava

Most tectonic plates move at rates of

• meters per second

• centimeters per second

• meters per year

• centimeters per year

The crust of the Earth is made of:

• Many hard rocks broken into very large pieces called plates
• A hard layer that contains hot magma and molten rock
• A soft ball that contains Nickel and Iron

Which layer of Earth is the thinnest? 

• Crust
• Mantle
• Inner Core
• Outer Core

This layer of Earth is solid Iron and Nickel

• Outer Core
• Mantle
• Inner Core
• Crust

What are the two types of crust?

• top crust,bottom crust
• oceanic crust, continental crust
• water,land
• none of the above