Plate Tectonics

The outer layer of the Earth is called the __________.

• core
• crust
• mantle
• plates

The scientific theory that the Earth's crust is made of moving plates.

• quakes
• seismic
• plate tectonics
• rotation

In the early 1900's Alfred Wegener found evidence of identical rock types, identical fossils, and matching mountain ranges on different continents that are on opposite sides of an ocean.  What could be the explanation for these observations?

• All animals can swim extremely long distances 
• These observations have no significant meaning.
• In the past, continents were not located where they are today but were joined together 
• mountains are made through the same processes therefore they are very similar in their structure throughout the entire world.

This layer of the core is made of liquid metals.

• outer core
• inner core
• middle core
• apple core

As you travel from the inner core to the crust, how would temperature, pressure and density of the material change?

• The would all increase
• The would all decrease.
• Nothing, the layers are made of the same material throughout
• Temperature would decrease, but pressure and density would increase

Deep cracks in the Earth's crust are called

• faults
• tear
• twist
• shear

As you travel from the inner core to the crust, how would temperature, pressure and density of the material change?

• The would all increase
• The would all decrease.
• Nothing, the layers are made of the same material throughout
• Temperature would decrease, but pressure and density would increase

The Earth is made up of two types of crust.  Which is more dense?

• Oceanic crust 
• Continental crust

What is Pangaea?

• The name of a German Scientist
• the name of the supercontinent that existed millions of years ago
• another name for continental drift
• the name of an ancient fossil

Most geologists think that the movement of Earth's plates is caused by

• conduction
• earthquakes
• convection currents in the mantle
• Earth's magnetic field.