Chapter 4 Homework
The East African rift is a divergent plate boundary that is splitting the continent of Africa into two pieces. What will eventually form around this divergent boundary?
An Ocean
Where are tectonic plates located?
At Earth's surface
: Which of the following statements about earthquakes with magnitude greater than 4.0 is most accurate?
Earthquakes with magnitude greater than 4.0 occur in a pattern than correlates closely with plate boundaries.
In general, where do volcanoes form in subduction zones?
On the overriding plate, away from the convergant boundary
How do plates move at divergent plate boundaries?
Plates move apart
How do plates move at convergent plate boundaries?
Plates move toward one another
How do plates move at transform plate boundaries?
Plates slide past one another
Why are volcanoes NOT found at transform boundaries?
Transform boundaries do not cause changes to the pressure, temperature, or composition of the mantle.
In general, where do earthquakes AND volcanic eruptions occur
at convergant & divergant boundaries
What are the three types of plate boundaries?
divergent, convergent & transform
What forms at divergent plate boundaries?
new oceanic lithosphere
