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heat from a volcanoe
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When magma rises up through the sea floor rifts and cools to form ocean floor?
yes
What happens when magma pouring through a rift onto the ocean floor?
new land forms
What is a crack in the ocean floor called?
Oceanic trench.
What is the cause of volcanic eruption?
Magma in mantal is under great heat and high temperature. Once there is a crack or we called a line of weakness appears on crust's surface,magma would escae to the surface from mantal.Volcanic ashes,gases and magma would throw out and causes volcanic eruptions.
What is located in midocean ridges?
The Mid-Atlantic Ridge is found on the ocean floor in the middle of the Atlantic Ocean.
When magma rises up through the sea floor rifts and cools to form ocean floor?
yes
What is the effect of magma pushing up through cracks in the ocean floor?
push and a pull
What happens when magma pouring through a rift onto the ocean floor?
new land forms
What is a crack in the ocean floor?
valley
What material that rises to surface at mid-ocean ridge?
Sea-floor spreading due to convection currents in the Earth's mantle (although this is still under investigation). Magma is pushed up through the cracks in the sea-floor as the plates move apart.
What is sea floor spreeding?
a crack in the ocean floor appears.
What is the theory that occurs when magma is pushed upward and flows through the openings in the ocean floor?
this usually happens when the sea floor spreads open.
What is a deep crack in the ocean floor?
huge cracks in the ocean floor are called trenches.
What is a crack in the ocean floor called?
Oceanic trench.
What happens when the Earth's crust splits apart and forms a valley?
It causes what we call "sea-floor spreading." Sea-floor spreading is the process in which the ocean floor is extended when two plates move apart. As the plates move apart, the rocks break and form a crack between the plates. Earthquakes occur along the plate boundary. Magma rises through the cracks and seeps out onto the ocean floor like a long, thin, undersea volcano.
Hardens to form new rock at mid-ocean ridges?
Sea- Floor Spreading molten material erupts through the valley that runs along the center of some mid-ocean ridges. This material hardens to form the rock of the ocean floor. Mid-ocean ridges an undersea mountain chain where new ocean floor is produced.
When magma reaches the ocean floor what does it form?
obsidian. It is a very dark substance.
