What Mountains?
Whose fault?
In Africa
What we think and what we know
Your Fault
100
Mt. St. Helens in the Cascades range formed as a result of subduction of the Juan de Fuca tectonic plate beneath the North American plate. What type of mountain is Mt. St. Helens?
a volcanic mountain
[Most volcanoes form from subduction of the Pacific plate and a continental plate.]
100
What stress causes Normal faults?
tension stress
100
Which is the coolest picture of Kilimanjaro?
YES!
100
The theory that explains how large pieces of Earth’s outermost layers move is:
Plate Tectonics
100
What kind of boundary causes the San Andreas fault?
transform boundary
200
What mountains are these? [Double click if you can tell the type of mountain.] [Triple click if you can tell what type of plate boundary created them!]
The Andes mountains are folded mountains (with some volcanoes) caused by the colliding boundary of the Nazca plate and the South American plate.
200
What faults are caused by shear stress?
Strike-slip faults
200
What kind of fault is it: Normal, Reverse or Slip-strike?
Normal
[Normal gravity made if fall in.]
200
What do scientists' study to know what is inside Earth?
seismic waves
200
What's in the middle of the target called?
Double click if you can tell what the point is underneath the target where the earthquake takes place.
The epicenter is in the middle. The focus is underneath where the earthquake really takes place.
300
The Alps arose as a result of a collision of the African plate and the Eurasian plate. What type of mountains are the Alps?
folded mountains
[Folded mountains form at colliding boundaries.]
300
What fault is caused by compression stress?
Reverse fault
300
What stress created it: tension stress, compression stress, or shear stress?
tension stress
[The arrows show the land was torn outward in both directions.]
300
Volcanic islands can form over hot spots. The Hawaiian Islands started forming over hot spots in the Pacific Ocean millions of years ago. What process causes the hot, solid rock to rise through the mantle at these locations? 
mantle convection
300
What kind of fault is the San Andreas fault?
Slip-strike
400
What type of mountains does this diagram show? [Double click if you tell what stress causes it.]
Fault-block mountains caused by
tension stress
400
What type of mountains are caused by Compression faults?
Volcanoes and Folded mountains
[double click if you got both]
400
What formation is a point 'A'?
a rift valley or rift zone
400
Do you know what this is? [Double click if you know WHERE it is.]
the San Andreas fault in California USA
400
What tectonic plates create the San Andreas fault?
the Juan de Fuca plate and the North American plate
Or you could say the Pacific plate and the North American plate
500
Which mountain range was created by this subduction?
the Himalayas or Himalayan mountains
500
Which faults do NOT cause mountains?
Strike-slip faults
500
Why are there no major earthquakes in Africa?
There are no plate boundaries in Africa.
500
Geologists could not accept the theory of Plate Tectonics until the energy and mechanism could be proven. What is the energy source for Plate tectonics?
the inner core
500
LOOK! It's our very own fault. Isn't it cute? What's it called? Double click if you know where it is? 
