Theories of Earth's Moving Crust

The plates move because of the rising and sinking material in the mantle in a...

• sea-floor spreading

• convection current

• tidal current

• wave

Pangaea is the name for

• large island

• Africa

• supercontinent

• the Pacific Ocean

The formation of ridges and trenches in the ocean is explained by a theory called...

• sea-floor spreading

• plate boundaries

• transform boundaries

• volcanoes

What is the name of the theory that Earth's crust is broken up into pieces that are in constant motion due to convection currents in the mantle?

• Plate tectonics

• Pangaea

• Continental drift

• Transform boundary

Which of the following choices correctly states the 2 types of crust?

• Oceanic and Magma crust
• Continental and Oceanic crust
• American and Pacific crust
• Continental and Atlantic crust

Which of the following was NOT used as evidence to support the continental drift theory

• Matching fossils on different continents

• Similar landforms (mountains) on different continents

• Ocean trenches

• The continents fit together like puzzle pieces

Which of the following lists the Earth's layers from innermost to outermost?

• Inner Core, Crust, Lithosphere, Asthenosphere

• Inner core, Outer Core, Mantle, Crust

• Outer Core, Inner Core, Mantle, Crust

Seafloor spreading is a process that...

• Destroys oceanic crust

• Occurs at the mid-ocean ridges

• Causes continents to plow through the seafloor

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which layer of the Earth is liquid and composed mostly of iron and nickel?

• inner core

• crust

• outer core

• mantle

What was the name of the theory that Alfred Wegener proposed all of the continents were a giant landmass and broke apart to their present day locations?

• seafloor spreading

• continental drift

• land moving

• rifting