occurs when 2 plates are pushing towards each other.
When do convergent boundaries occur?
100
They occur on the edges of continents and in the ring of fire.
Where do most earthquakes occur?
100
When all the land masses were together before continents.
What is Pangaea?
100
Cracks in earth's crust
What are faults?
200
1.Cover several of miles.
2.long,gently sloped sides.
3.fluid like lava flows out over the sides over long periods of time.
refer to 1c for an image.
What are characteristics of a shield volcano?What is the shape of shield volcanoes?
200
Occur when plates move apart from each other
When do divergent boundaries occur?
200
Occurs because of transform plate boundaries and mostly because of sudden movements of rocks along faults
What are earthquakes?
200
Alfred Wegener made a theory about .......... with Pangaea included in the process.
What is continental drift?
200
The fault where rocks plunge towards the ground.The pressure is from the bottom and top creating a flat portion but then a little curvy part.
What are monocline faults?Where is the pressure from?
300
1.most dangerous,tend to erupt violently,ejecting large quantities of ash cinders and lava. One example is the Mt. Saint Helens.Refer to 1d of the word document for a picture.
What are characteristics of composite volcanoes?
300
When plates slide past one another it causes a ........... boundary.
When do transform boundaries occur?
300
Earthquakes under water that causes a giant wave?
How can earthquakes cause Tsunami's?
300
The movement of Pangaea to the continents of today.
What is Pangaea rifted and split?
300
Folds the bends downwards. The pressure comes from The sides which makes the rocks arch upwards but as it gets weaker it starts to bend downwards.
What are syncline folds?Where is the pressure from?
400
Form on sides of shield volcanoes. Steep cone shaped volcanoes. Usually erupt once,solidify,and never erupt again.Loose material on sides tend to collapse.
What are characteristics of a cinder volcano? What shape do cinder volcanoes cause?
400
Geological features of this kind of boundaries are mountains,trenches,shallow quakes,and intermediate quakes.
What are geological features of convergent boundaries?
400
Shifting of plates puts stress on faults causing this.
What causes earthquakes?
400
The Continental drift caused Pangaea to ............. causing ............
What made Pangaea to rift and cause different land masses?
400
A fold where the rocks arch upwards. The pressure is from the sides causing the rocks to arch upwards.
What is an anticline fold? Where is the pressure from?
500
steep-walked,basin-shaped,depression.
What is the shape of an ash flow caldera?
500
When the 2 crusts interact with each other the thinner and more dense crust is hidden by the thicker and less dense.
What happens when convergent Continental and oceanic crusts interact?
500
Surface faulting, tectonic uplift and subsidence, tsunamis, and land slide.
what do earthquakes cause?
500
In 1912 Alfred Wegener discovered.......
When was Pangaea first discovered?
500
Folds that form due to folds converging.Refer to 1a and 1b on the word document.