Continental Drift and Plate Tectonics

What is the Theory of Continental Drift?

• New continents are continually being created

  and destroyed.

• The layout of the continents is the same today

  as it has always been

• The continents have always been separate but

  may one day drift together to form a single

  continent

• All the continents were once one continent that

  broke up and drifted apart over hundreds of

  millions of years

Tags

NGSS.MS-ESS2-3

Where does magma rise to the top to become new crust?

• one plate splits into two distinct plates

• one plate grinds against another plate

• two plates separate and move apart from one

  another.

• two plates meet and collide with one another.

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

When tectonic plates of more density and less density collide, what happens?

• The plate that is more dense fractures.

• The plate that is more dense rises.

• The plate that is less dense subducts.

• The more dense plate subducts.

What type of boundary exists when 2 plates are pulling apart?

• Convergent

• Transform

• Obtrusive

• Divergent

Tags

NGSS.MS-ESS2-3

What do these color strips show between South America and Africa with the Theory of Plate Tectonics?

• Similar cultures

• Similar fossils

• Similar languages

• Similar weather

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Alfred Wegener proposed the Theory of Continental Drift. Which one of these does NOT support the theory Wegener proposed?

• Fossils that were similar were found on different continents.

• Bacteria was found all over the world.

• Shape of continents fit together to form a supercontinent called Pangea

• Climate seen as glacial or ice sharring are found all over the world.

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

The theory of continental drift states that all the continents were once part of one big landmass called Pangaea. Who was the scientist that came up with this theory?

• Harry Hess

• Bill Nye

• Alfred Wegener

• Albert Einstein

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NGSS.HS-ESS1-5

Why was Alfred Wegener unable to explain his theory?

• He couldn't explain how the continents drifted.

• He couldn't explain why similar fossils on different continents were separated

• He couldn't explain why similar geological structures found were found on different continents.

• He couldn't explain why the continents fit together like a puzzle.

Tags

NGSS.MS-ESS2-3

Tectonic plates float on top of the

• crust

• asthenosphere

• lower mantle

• outer core

Tags

NGSS.MS-ESS2-3

Seafloor Spreading occurs at a

• convergent boundary

• divergent boundary

• transform boundary

• continental boundary

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3