Plate Tectonics

To support his hypothesis of continental drift, Alfred Wegner used three pieces of evidence:

• Climate Evidence

• Fossils, Reptiles and Ferns

• Evidence from rock formations

• All of the above

Isochron maps of the seafloor ages indicate that ocean crust is ____.

• Older Near mid-ocean ridges

• Younger Near mid-ocean ridges

• Made of Fruit Roll-ups

• Less dense than Continental crust

Tags

NGSS.MS-ESS2-1

Tectonic plates interact or meet at places called plate ___________.

• Plate Parties

• Plate Stations

• Plate Boundaries

• Plate Junctions

Tags

NGSS.MS-ESS2-3

Features found at divergent boundaries include _______.

• Mid-Ocean Ridges

• Mountians

• Trenches

• Island Arc Volcanoes

Tags

NGSS.MS-ESS2-3

Continental drift was not widely accepted when it was first proposed because _________.

• Wegener was not very well liked.e

• Wegener was really young.

• Wegener couldn't explain the mechanism.

• Most people thought the earth was flat.

What type of geologic feature can form when portions of subducted ocean plates melt and magma is forced upward in the ocean?

• Earthquakes

• Deep sea trench and volcanic island arcs

• Hot spots

• Mid-ocean ridges

Oceanic crust is made mostly of __________________.

• Iron

• Fruit Roll-up

• Granite

• Basalt

Coal beds in Antarctica indicated to Wegener that this continent was ________________________.

• A leader in fossil fuels

• once tropical, located closer to the equator

• Under water

• Hit by a giant meteor

Continental-continental plate collisions form ___________.

• Deep Sea Trenches

• Earthquakes

• Volcanoes

• very tall folded mountain ranges

Places where tectonic plates move apart are called _____________________.

• Transverse

• Convergent Boundaries

• Divergent Boundaries

• Collective Boundaries