Main Idea 1
When does folding happen?
A) Tectonic compression causes rock layers to deform and bend rather than break.
B) When Tectonic stresses exceed the strength of the brittle rock, causing it to break and slip.
C) When plates are in motion, building up immense stress along boundaries over millions of years.
A) Tectonic compression causes rock layers to deform and bend rather than break.
How are folded mountains formed?
A)They break into 2.
B)The rocks bend.
C)One rises, one falls.
B) The rocks bend.
Plates_____, causing crust to________.
Collide, Lift
What is the difference between young and old mountains?
A) Young are short and round and old are tall and sharp.
B) Young are tall and sharp and old are short and round.
C) There is no difference.
B) Young are tall and sharp and old are short and round.
Sedimentary rocks form in _______ at the bottom of the__________.
Layers/ocean
Fault blocks are formed when one plate_________ off another due to stress_______ the crust's limits. Allowing you to see the _______ in the wall.
breaks/exceeding/layers
When an oceanic plate subducts under a continental plate what is formed?
Ocean Trenches
Old mountains are over _________ years old and young mountains are less than _________ years old.
100 million/100 million
When does faulting happen? Explain.
When tectonic stresses exceed the strength of brittle rock causing it to fracture and move usually during earthquakes.
How are complex mountains formed? Give an example.
Examples: Himalayan Mountains, Andes, Alps, Applaachian.
What is the surface opening of a volcano called?
Volcanic Vent
Are mountains still growing? What is happening to young and old mountains in the present?
Young mountains are but not old ones. Young mountains are still rising due to the movement of crusts. While old ones are eroding from the rain ("shrinking").