Q. What are the key features associated with constructive plate margins?
Constructive plate margins At a constructive plate margin the plates move apart from one another. When this happens the magma from the mantle rises up to make (or construct) new land in the form of a shield volcano. The movement of the plates over the mantle can cause earthquakes.
Q. What is constructive plate boundaries?
constructive boundaries (divergent) are where plates are moving away from each other. New crust is created between the two plates. destructive boundaries (convergent) are where plates are moving towards each other.
Q. What geologic features are formed in each boundary?
As these plates slowly move about, they interact with each other, forming boundary zones. Each of these different types of plate boundaries produces unique geographical features on the surface, including fault lines, trenches, volcanoes, mountains, ridges and rift valleys.
Q. What landforms are created at destructive plate boundaries?
Landforms associated with destructive plate boundaries
| Large scale landforms (Destructive plate boundary) | Small scale landforms (Destructive plate boundary) |
|---|---|
| Stratovolcanoes | Cinder cone |
| Caldera volcanoes | |
| Ocean trench | |
| Fold mountains |
Q. What are examples of divergent boundaries?
Examples
- Mid-Atlantic Ridge.
- Red Sea Rift.
- Baikal Rift Zone.
- East African Rift.
- East Pacific Rise.
- Gakkel Ridge.
- Galapagos Rise.
- Explorer Ridge.
Q. What causes transform boundaries?
When two plates are moving away from each other, we call this a divergent plate boundary. This is known as a transform plate boundary. As the plates rub against each other, huge stresses can cause portions of the rock to break, resulting in earthquakes. Places where these breaks occur are called faults.
Q. What are the type of boundaries?
There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries. This image shows the three main types of plate boundaries: divergent, convergent, and transform. Image courtesy of the U.S. Geological Survey.
Q. What would not be found at a divergent boundary?
In general,earthquakes and volcanic eruptions occur at both divergent plate boundaries AND convergent plate boundaries. Volcanoes are not found at transform boundaries because they do not cause changes to the pressure, temperature, or composition of the mantle.
Q. Which two places do divergent boundaries occur?
Divergent boundaries are occur in oceans and lower mantle.
Q. What is an example of plate tectonics?
Examples include the boundary between the Eurasian plate and the African plate, and the boundary between the Indian plate and the Eurasian plate, where the Himalayas are formed where the Eurasian plate is forced up and over the Indian plate. This type of boundary tends to produce a diffuse zone of activity.
Q. What activities occur at the plate tectonics?
Earthquakes, volcanic activity, mountain-building, and the formation of oceanic trenches occur along these plate boundaries.
Q. What is the importance of identifying the major plates?
Why plate tectonics is important. These are the Earth’s major tectonic plates. The arrows show which way the boundaries are moving. USGS Plates cover the entire Earth, and their boundaries play an important role in geologic happenings.
