Worksheets8th grade plate tectonics topo maps
Total questions: 60
Worksheet time: 1hrs 20mins
The movement of the tectonic plates is caused by
the rotation of the Earth.
convection currents in the Asthenosphere
the gravity of the iron-nickel core.
convection currents in the Lithosphere
In some areas of the world, like California and Japan, earthquakes are a common occurrence. How can this best be explained?
The strong ocean currents are undermining both areas causing earthquakes.
Both areas are located near the edge of the Pacific Ocean, the unstable sand causes earthquakes.
Both areas are subjected to strong ocean wind and waves that causes earthquakes.
Both areas are on the boundary of active plates, the motion of the plates causes earthquakes.
Observe this diagram of a plate boundary. One statement BEST describes what is happening. It is that
the oceanic crust is melting.
the denser ceanic crust is subducting under the less dense oceanic crust
volcanic islands are forming.
the tectonic plates are moving away from each other.
The map in the picture shows tectonic plate boundaries. This map would be useful in predicting the location of future
droughts
hurricanes
earthquakes
tornadoes
___________ currents in the Earth's asthenosphere cause plate to shift at their boundaries. This movement also causes earthquakes and volcanic activity.
conduction
convection
radiation
ocean
Where would sea floor spreading most likely occur?
At convergent boundaries (oceanic vs. oceanic)
At convergent boundaries (oceanic vs. continental)
At divergent plate boundaries (oceanic vs. oceanic)
At transform plate boundaries
divergent boundary
convergent boundary
transform boundary
divergent boundary
convergent boundary
transform boundary
divergent boundary
convergent boundary
transform boundary
This type of boundary does NOT involve magma.
divergent
convergent
transform
This type of boundary can be found along the San Andreas fault in California....
divergent
convergent
transform
New crust is formed at this type of boundary
divergent
convergent
transform
This type of boundary creates folded mountains.
transform
divergent
continental-continental convergent
continental-oceanic convergent
At which of these boundaries would you find a deep sea trench?
transform
divergent
oceanic-oceanic convergent
continental-continental convergent
Volcanoes are formed when which type of crust subducts under another plate?
continental
oceanic
magma
When oceanic and continental crust collide what feature would form?
volcanic island arc
folded mountain
volcanoes on the continent
Which feature is formed when two oceanic plates collide?
mid-ocean ridge
volcanic island arc
folded mountains
Subduction means.....
one plate goes under another plate
two plates slide past each other
two plate collide and form folded mountains
Sea-floor spreading explains how.....
new crust is created at a divergent boundary
volcanoes are formed on continents
deep sea trenches are formed
Which one is the steepest?
2
1
4
