Sea-Floor Spreading and Plate Tectonics

True or False: The 7 continents were once a united landmass.

• True
• False

Tags

NGSS.MS-ESS2-3

Boundary where two plates move away from each other.

• Transform Boundary
• Divergent Boundary 
• Convergent Boundary
• Physical Boundary

The theory that Earth's lithosphere are moving constantly by convection currents from the Mantle.

• Plate Tectonics
• Tectonic Plates

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-1

The leading edge of the older crust that is subducted pulls the rest of the plate down with it.

• Strike-slip fault
• Island Arc
• Folded Mountains
• Slab Pull

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

What does a convergent Ocean-Ocean Plate Collision makes? 

• Volcanic Mountains
• Volcanic Islands/ Island Arc
• Folded Mountains
• Rift Valley

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

True or False: Continental Crust is less dense than Oceanic Crust

• True
• False

Continental crust is mainly made of the rock....

• Nickel
• Basalt
• Mantle
• Granite

Earth's lithosphere is broken into separate sections called.....

• plates
• faults
• trenches
• rifts

Tags

NGSS.MS-ESS2-3

Mountains formed when two continental plates collide

• Regular Mountains
• Folded Mountains
• Volcanic Mountains
• Continental Mountains

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Why did scientists rejected Wegener's theory? He couldn't.....

• Explain why continental crust was denser than oceanic crust.
• Describe the climate of Pangaea
• Explain what force pushes or pulls continents
• Describe how seeds moved from Africa to South America