In which plate margin does sea floor spreading occur?
Convergent margin
Divergent margin
Transform margin
None of these
An earthquake is measured with a machine called a ________.
Telegraph
Seismograph
Compass
Lactometer
What type of landform is developed in subduction zones?
Fold mountain
Ocean trenches
Oceanic ridges
Rift valley
On which scale is the earthquake measured ?
Plane scale
Richter scale
Divider
When did the supercontinent Pangaea begin to break apart?
about 10,000 years ago
about 10 million years ago
about 200 million years ago
about 570 million years ago
The inner most layer of the earth is
Mantle
Inner Core
Crust
The land near the Pacific Ocean is well known for its volcanoes. This area is called
The ring of fire
The ring of Volcanoes
The ring of water
The ring of Oceans
The San Andreas Fault in California is a:
convergent plate boundary.
divergent plate boundary.
transform plate boundary.
none of these.
