Terms
The place where two different plated have contact.
plate boundary
What lies just below the lithospheric plates
A layer of made of liquid metal
Tectonic plates are made of two types of crust. Which type is more dense?
Oceanic
This boundary moves together to collide
Describe the geologic events that result from a convergent, divergent, and transform tectonic plate boundary.
Convergent boundaries include moutain formation, volcanoes, and earthquakes. Plates are coming together
Divergent boundaries include volcanic activity because divergent motion usually occurs near ocean ridges Plates are pulling away from each other
Transform boundaries include earthquakes because of a buildup of energy. Plates are sliding past each other.
Major geological events that occur when plates shift suddenly and release stored energy; a frequent occurence along all types of plate boundaries.
Earthquakes
Ocean floors are most accurately described how?
The tops of thin oceanic plates that spread outward from mid-ocean rift zones
Tectonic plates move in three distinct ways. Which motion results in the plates pulling apart?
Divergent
This boundary slide past each other
Transform Boundary
What is the force that drives all plate tectonic movement? Explain the process.
The plates float and move slowly on Earth's soft, underlying asthenosphere, driven by convective currents
What are Spreading Ridges?
Ridges formed from new crustal material at diverging oceanic plates
Which of the following most accurately describes the movement of lithospheric plates?
They are in constant, but slow motion
What can happen at the boundries where transform movement occurs between tectonic plates?
Earthquakes
This boundary separates from each other
divergent boundary
A Volcanic eruption is?
Molten rock spews out from the mantle to the surface of the Earth as ash, lava, and gases.
Huge pieces of lithosphere that slowly move on the asthenosphere and consists of the crust and the rigid, uppermost part of the mantle.
Tectonic plates
The interaction of two plate boundaries can cause which of the following?
Earthquakes and volcanoes
Where are volcanoes, earthquakes, and ocean basins typically found?
near tectonic plate boundaries
This is the place where the plates connect
Plate boundary
What are transform boundaries
Occurs when two tectonic plates slide past each other.
Occurs when one plate is denser than another and is forced below as the two plates converge at their boundary.
Subduction
At which type of plate boundary will a rift valley most likely form? What does this picture look like
Divergent boundary
Scientists believe that millions of years ago all of the land on Earth was part of one landmass. How did the landmass change into our present day continents?
Tectonic plate movement
List all three boundaries
Convergent
transform
divergent
Major geological event that occurs when continental plates of equal density converge, resulting in mountain chains.