GENERAL GEOLOGY

GEOLOGY

PHYSICAL GEOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A divergent boundary at two oceanic plates can result in a ____
A
volcanic island arc
B
continental volcanic arc
C
earthquake
D
ocean ridges (seafloor spreading)
Explanation: 

Detailed explanation-1: -Divergent plate boundaries in the ocean create mid-ocean ridges. This is where new seafloor is created by upwelling magma. Divergent plate boundaries rift a continent apart. Eventually a new ocean will form between the two continents.

Detailed explanation-2: -A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust.

Detailed explanation-3: -Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.

Detailed explanation-4: -When two plates are moving away from each other, we call this a divergent plate boundary. Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere. Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges.

Detailed explanation-5: -Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges.

There is 1 question to complete.