Constructive plate boundaries
1) Convection currents in the mantle move the plates
2) 2 plates of oceanic crust diverge/pull apart e.g. North American and Eurasian plates.
3)
The rising magma forces the ends of the plate to push up and buckle.
This creates tensional cracks on the underside of the plates.
4) Magma is squeezed into the gap between the two plates and is cooled by the ocean to form new, solidified rock/basalt.
5) Rising magma forces its way through the tensional cracks and forms sub-marine shield volcanoes on the ocean floor.
6)
With repeated eruptions over millions of years they can grow until
they break the surface of the ocean and become volcanic islands e.g.
Iceland.
<span>silica is a rich compound that has silicon and oxygen and it's thicker and is more resistant to flow. other lava with less silica flows easier so the amount of water vapor and other gases trapped in lava influences how lava erupts. hope the helps! </span>
<span>Answer:
Peasants moved away from the country into towns they were eventually allowed to buy their freedom.</span>
UAE have imported 62% of its crude petroleum to Japan
Answer:
Naroroon ang Russia sa hilaga ng Asya.
Paliwanag:
Ang County na naroroon sa rehiyon ng hilagang Asya ay ang Russia, Ural at Siberia. Ang bahaging ito ng Asya ay may malamig na klima sapagkat wala ng mga bundok na pumipigil sa Russia mula sa malamig na hangin na nagmumula sa artic na rehiyon kaya't ito ang dahilan kung bakit mayroon itong napakalamig na klima. Halos 77 porsyento ng Russia ang naroroon sa Asya samantalang 23 porsyento ang naroroon sa Europa.