Column 1
True or False:
If two continental plates converge, a subduction zone forms.
False: oceanic plates
True or False
Scientists at the time rejected Wegener's hypothesis of continental drift because he could not explain how or why Earth's continents moved.
True
Scientists have observed that the continents move apart or come together at speeds of a few centimeters per what amount of time?
What is a year?
While studying the ocean floor, scientists found bands of magnetism of this pattern.
What are alternating bands?
The Himalayan mountain range of India was formed at this kind of boundary.
What is a convergent boundary?
True or False:
Some early mapmakers thought that the coastline of South America matched the coastline of Asia.
True
This part of Earth's process is by when it has reversed itself several times in the past when the alignment of iron minerals in rocks are formed.
What is its magnetic field?
Plates slide past one another at these places.
What are transform boundaries?
Bands of rock on the seafloor showing alternating magnetic orientation indicate Earth's magnetic field has this kind of change.
What is reversing itself in the past?
The youngest part of the ocean floor is found here.
What is near ocean ridges?
Where are the youngest rocks on the ocean floor are located?
What is at mid-ocean ridges?
Plates move apart at these kinds of boundaries.
What are divergent boundaries?
The boundary between two plates moving together is called what kind of boundary?
What is a convergent boundary?
Continental drift states that continents have moved at this speed to their current location.
What is slowly?
A vast, underwater mountain chain.
What is an ocean ridge?
The crust and upper mantle make up this part of Earth.
What is the lithosphere?
The result of plate movement can be seen at these parts of Earth.
What are plate boundaries?
Seafloor spreading occurs because of this happening.
What is molten material beneath Earth's crust rising to the surface?
In order to complete a convection current, the rising material must eventually do this in relationship to Earth.
What is cool?
The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is this in relation to the other side.
What is a mirror image?
True or False?
According to the theory of plate tectonics, plates interact at plate boundaries by deflecting each other, moving away from each other, or moving horizontally past each other.
False: coming toward each other
Plates of the lithosphere float on this layer of Earth.
What is the asthenosphere?
Active volcanoes are most likely to form at these boundaries.
What are convergent oceanic-continental boundaries?
This type of plate boundary occurs between the North American Plate and the Eurasian Plate, shown in the figure in your study guides.
This theory states that Earth's surface is divided into rigid plates that move relative to one another.
What is plate tectonics?