What are the 3 types of tectonic plates?
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.
What are the 3 classification of Volcano?
Volcanoes are classified as active, dormant, or extinct. Active volcanoes have a recent history of eruptions; they are likely to erupt again.
How do we know Plate tectonics is real?
Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Finding identical or similar fossils in areas separated by vast distances were some of the first clues that scientists used to reconstruct past plate movement.
Where are the most volcanically active boundaries on Earth?
Pacific Ring of Fire
Indonesia is one of many places located within the world’s most volcanically, and seismically, active zone, known as the Pacific Ring of Fire. This 40,000 km horseshoe-shaped region, bordering the Pacific Ocean, is where many tectonic plates bang into each other.
Does Earth becomes smaller or bigger when plates move?
New crust is continually being pushed away from divergent boundaries (where sea-floor spreading occurs), increasing Earth’s surface. But the Earth isn’t getting any bigger.
What are the 3 types of volcanoes in the world?
1 Hot Spot: Hawaiian Islands, Yellowstone Supervolcano 2 Divergent plate boundaries: Mid-ocean ridges, rifts 3 Convergent plate boundaries: Subduction zones
Are there any volcanoes on the surface of a plate?
The normal amount of melt that may be present in the asthenosphere under a normal plate is obviously too small to produce volcanoes on the surface (otherwise there would be volcanoes all over) and is in equilibrium with its surroundings.
How are plate boundaries related to volcanic activity?
Sometimes, the plates collide with one another or move apart. Volcanoes are most common in these geologically active boundaries. The two types of plate boundaries that are most likely to produce volcanic activity are divergent plate boundaries and convergent plate boundaries. At a divergent boundary, tectonic plates move apart from one another.
What are the three types of plate boundaries?
Recall that there are three types of plate boundaries: convergent, divergent, and transform. Volcanism occurs at convergent boundaries (subduction zones) and at divergent boundaries (mid-ocean ridges, continental rifts), but not commonly at transform boundaries. Why not?