Earth and Environmental study guide.
Which of the following is the most recent evidence of plate tectonics?
volcanic activity and sea floor spreading on the at the mid- oceanic ridge.
The sediments found in a riverbed are MOST likely a result of which action on nearby rock?
weathering
Florida has a large supply of phosphate that ancient seas deposited millions of years ago. The phosphate contains the remains of animals that were deposited in layers on the sea floor. Which type of rock did the phosphate become?
Sedimentary
Which of these best explains how tectonic plate movement causes the movement of mountain ranges.
Convection currents in the mantle cause two plates to collide forming the mountains.
Which feature does not form as a result of tectonic plates diverging.
Mid-Ocean ridge
Which feature form when magma emerges between two diverging points.
Mid-Ocean ridge
Vein deposits of gold and silver are often formed in areas that have experienced which geologic process?
Percipitation
What MOST likely led to the formation of the North American continent?
The tectonic plates separated and moved away from each other.
How is the theory of plate tectonics different from a hypothesis regarding a certain aspect of plate movement?
The theory explains a number of related observations.
Sedimentary deposits formed from organic material tend to include a high amount of
carbon
Which process is included in the formation of both metamorphic and sedimentary rock?
compaction
The formation of diamonds requires tremendous pressure that is generated
deep below the crust.
Geologists were examining an area in Africa called the Great Rift Valley. Which geologic event MOST likely caused the formation of the valley?
diverging continental plates
The abundance of a mineral at the surface of Earth MOST likely depends upon the
element availability
Most mountains on Earth occur in huge ranges stretching for thousands of miles. Which event is MOST likely to cause the formation of these mountain ranges?
movement of plates
Over time, non-volcanic mountains can form due to the interaction of plate boundaries. Which interaction is MOST likely associated with the formation of non-volcanic mountains?
oceanic plates separating from oceanic plates
