Earth Systems, Structures, & Processes

Which layer of the Earth is represented by letter C?

• Crust 
• Mantle
• Inner Core
• Outer Core

Which layer of the Earth is represented by letter B?

• Inner Core
• Outer Core
• Crust 
• Mantle

Which layer of Earth is divided into plates?

• Outer Core
• Crust 
• Inner Core
• Mantle

_______________________ move through the rock material by causing particles in the rock to vibrate at right angles to the direction in which the waves are moving. 

• Primary waves
• Secondary waves
• Surface waves 
• Light waves

Tectonic plate movement is caused by 

• movement in the inner core
• conduction in the mantle 
• convection currents in the mantle 
• oceanic plates drifting 

Pangea was a ______________ that included the 7 continents that we know today. ___________ movement eventually led to Pangea breaking apart and forming the continents that we know today. 

• ocean; plate
• supercontinent; ocean
• environment; ocean
• supercontinent; plate

Where are earthquakes and volcanoes most often located?

• center of crustal planes
• edges of crustal plate
• center of continents
• edges of continents

What is the basic composition of Earth's core?

• The solid inner core surrounded by a liquid outer core
• The liquid inner core surrounded by a solid outer core
• Both inner core and outer core are solid
• Bothe the inner core and outer core are liquid 

Which best describes Earth's crust?

• It is stationary and unable to move. 
• It is thicker than the mantle and the core. 
• It is located between the outer and inner core. 
• It is composed of oceanic and continental plates. 

The activity that occurs along the Ring of Fire is most likely due to:

• Movement along plate boundaries
• Volcanoes erupting 
• Temperature differences in the atmosphere
• The Pacific Ocean's harsh environment