Similar mountain chains run through eastern North America and the British Isles
What is rock types and structures
100
Is the following true or false? Most scientists in Wegeners time supported his continental drift hypothesis
What is false
100
Wegener called Earth's ancient supercontinent _______
What is Pangaea
100
Divergent plate boundaries are also known as what?
What is spreading centers
100
Convergent plate boundaries consist of three types of plate collisions, based on the type of crust colliding and its density. What are they?
1. Subduction zones
2. Subduction zones can also occur between continental and oceanic plates.
3. Collision of two continental crusts
200
Land areas that show evidence of ancient glaciation are now located near the equator
What is ancient climates
200
Is the following true or false? Wegener proposed that during continental drift, larger continental broke through the oceanic crust
What is true
200
Earth's lithosphere is divided into _______ that move and change shape
What is plates
200
Divergent plate boundaries are characterized by tensional stresses, producing block faulting, ________, and open fissures at the spreading center.
What is fractures
200
The India land mass gradually moved northeast until it collided with the ________.
What is Eurasian Plate
300
The Atlantic coastlines of South America and Africa fit together
What is continental puzzle
300
By 1968, data collected about the ocean floor, earthquake activity, and the magnetic field led to a new theory called ______
What is plate tectonics
300
The largest plate in Earth's lithosphere is?
What is Pacific plate
300
Divergent plate boundaries can also occur on.
What is continents
300
The third type of plate boundary is the _____________.
What is transform fault boundary.
400
_______ evidence for continental drift included several organisms found on different landmasses
What is Fossils
400
The new theory that replaced Wegeners hypothesis explained most geologic processes, including the formation of ________
What is Mountains
400
All major interactions among plates occur along their boundaries( earthquakes, volcanoes, faulting, and ______
What is folding
400
Long, linear valleys, some filled with water, and volcanoes are evidence of __________.
What is continental rifting
400
Some geologic texts also refer to transform fault boundaries as ____________.
What is passive plate margins
500
Is the Following true of false? If the continents existed as Pangaea, the rocks found in a particula region on one continent should closely match in age and type those in adjacent positions on the adjoining continent.
What is true
500
An example of one objection that critics had about Wegeners continental drift hypothesis would be?
Wegener could not propose a mechanism capable of moving the continents.
500
Deep faulted structures called ________ are found along the axes of some segments
What is rift valleys
500
What happens during Divergent plate boundary? (Give 2 Examples)
1. Two plates move apart
2. Mantle material upwells to create new sea floor
500
These zones where two plates slide past each other without diverging or converging can also be heard of as ____________.