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Plate Tectonics Test Review
Terms in this set (27)
The seafloor spreading theory was proposed by ______
As Earth's plates move apart at some boundaries, they collide at others, forming ______
mountains, volcanoes, and ocean basins
The youngest rocks in the ocean floor are located at the mid-ocean ______
The results of plate movement can be seen at ______
rift valleys, plate boundaries.
The ______ are forming where the Indo-Australian plate collides into the Eurasian plate.
The presence of the same ______ on several continents supports the idea of continental drift.
Continental drift occurs because of ______
The cycle of heating, rising, cooling, and sinking is called a ______
Oceanic plates are pushed down into the upper mantle in ______
The hypothesis that continents have moved slowly to their current locations is called ______
Plates move apart at ______ boundaries.
Ocean floor rocks are ______ continental rocks.
The alignment of iron-bearing minerals in rocks when they formed reflects the fact that Earth's ______ has reversed itself several times in its past.
The lack of an explanation for continental drift prevented many scientists from believing a single supercontinent called ______ once existed.
Scientists aboard the Glomar Challenger added to the evidence for the theory of seafloor spreading by providing ______
samples of rock from different locations.
Where plates slide past one another, ______ occur.
The places between plates moving together are called ______
Seafloor spreading occurs because ______
hot, less-dense material below Earth's crust is forced upward toward the surface.
Studying the ocean floor, scientists found rocks showing magnetic ______
The theory that describes Earth's crust and upper mantle as being broken into sections is called ____________________.
The theory of ____________________ was shown to be correct by age evidence and magnetic clues.
____________________, occurring in the mantle, are thought to be the force behind plate tectonics.
Earth's plasticlike layer is the ____________________.
Earth's ____________________ move around on a special layer of the mantle.
The main lines of evidence for ____________________ are fossil, rock, and climate clues, and the theory of seafloor spreading.
The rigid part of the plates of the ____________________ are made of oceanic crust or continental crust and upper mantle.
The name ____________________ means "all land."
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