Plates Vocabulary
The thinnest layer of the earth
What is the crust?
Earthquakes and Volcanoes are usually located in relation to these.
What is a plate boundary?
These landforms are produced on earth when two continental plates collide or move towards each other.
What are mountains?
The remains or traces of past life, usually found in sedimentary rock.
What is a fossil?
A number of rigid, but moving, pieces of Earth's surface.
What is tectonic plates?
This is the mechanism, or what causes, the plates to move.
What is convection cycles in the mantle?
These landforms are produced on the coasts of continents where oceanic crust moves underneath the continental crust.
What are volcanoes?
Evidence of an organism's activities.
What is a trace fossil?
The theory that all continents are fragments of Pangaea now drifting apart.
What is the Continental Drift Theory?
Using arrows- Draw the movement of plates when it forms a volcano or mountain.
Arrows should be pointing towards eachother:
--------> <----------
These natural disasters occur when a sudden movement occurs along transform boundaries (when plates slide past each other).
What are earthquakes?
Older rocks are located toward the bottom, under the younger rocks. ... This law proves that evolution could have occurred since fossils found deep in rock structures are older, from a different time, where some generations of species did not exist.
What is the Law of Superposition?
States that youngest rocks of ocean floor are at diverging boundaries, moving outward.
What is seafloor spreading?
Using arrows- Draw the movement of plates when it creates an earthquake.
Arrows should be sliding past eachother. (Represents a rubbing movement that causes tension and overall earthquake)
Cracks in the earth's crust along which there is movement. These can be massive (the boundaries between the tectonic plates themselves) or very small.
What is a fault?
True or False: A fish fossil found in the desert is evidence that the land where the fossil was found was once under water.
What is true?
When two tectonic plates meet. One of the plates is pushed under the other into the Earth's mantle.
What is subduction?
Using arrows- Draw the movement of plates when it forms a mid ocean ridge or rift valley on land.
Arrows should be pointing away from eachother:
<-------- -------->
These features form as new crust rises to the surface during seafloor spreading. (Hint:this is underwater)
What are mid-ocean ridges?
A fossil of an organism that lived in many places around the world for a short period of time and is now extinct.
What is an index fossil?