What's that fault/fold?
A type of fault where rocks on either side moves in opposite, horizontal directions
What is a strike-slip fault?
A plume of hot material that rises through the mantle and can cause volcanoes.
What is a hotspot?
Caused by two plates moving towards one another
What is compressional stress?
The spot where the youngest seafloor is
What is a rift valley?
The block of rock that forms the upper half of a fault.
What is a hanging wall?
A type of fault where the hanging wall slides upward; caused by compression in the crust
What is a reverse fault?
A place hotspots are common
What is a plate boundary?
Caused by two plates shifting away from each other
What is tensional stress?
How the earth's magnetic field is now
What is normal polarity?
The block of rock that forms the lower half of a fault?
What is a foot wall?
a downward fold formed by compression in Earth's crust
What is a syncline?
Why there are more hotspots underwater
What is thinner seafloor?
Caused by two plates sliding past each other
What is shearing?
Magma cooling in the ocean to make underwater islands
What is seafloor spreading?
A force that acts on rock to change its shape or volume
What is stress?
A type of fault where the hanging wall slides downward; caused by tension in the crust.
What is a normal fault?
A new (not yet above water) island, forming next to Hawaii
What is the Lö'ihi Seamount
Every type of stress
What is compressional, tensional, and shearing?
The reason continents move
What is the creation and destruction of ocean crust?
Stress that stretches rock so that it becomes thinner in the middle
What is tension?
An upward fold formed by compression of Earth's crust.
What is an anticline?
The amount of hotspots currently estimated to exsist right now.
What is 50?
All faults and folds caused by compressional stress
What is anticlines, synclines, and reverse faults?
The person who put together the seafloor spreading hypothesis
What is Harry Hess?
A break in the Earth's crust where masses of rock slip past one another
What is a fault?