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rift vally on land, and mid-ocean ridge under water

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Long cracks where plates diverge?

rift


What is formed when the plates move apart at some boundaries and collide at others?

At collision, mountains, at separation, long deep holes into the earth.


When were fold mountains formed?

this most common type of mountain is formed when two tectonic plates smash into each other the edges buckle and crumble,giving rise to long mountain chains~bobby from Texas


How did the plates spread apart?

Tectonic Plates are formed when a divergence occurs within a continent; it is called as ÒRiftingÓ. When hot magma advances from below, the mantle pushes the crust and causes pressure forcing the continent to break and separate creating an earthquake.


How long did it take for the Rocky Mountains to form?

The rocky mountians formed over 20 million years of colition bettween two continental plates


What are the long deep cracks in the Maria Bedrock on the Moon called?

The long deep cracks in the Maria Bedrock on the Moon are called rilles. These are narrow, trench-like depressions that can be several kilometers wide and hundreds of kilometers long. Rilles are thought to have formed from a combination of volcanic and tectonic processes.


Why does melting occur at divergent plate boundaries?

Hot mantle rock rises where the plates are moving apart. This releases pressure on the mantle, which lowers its melting temperature. Lava erupts through long cracks in the ground, or fissures


What is a rift in geology?

A rift valley is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault


How are volcanoes and earthquakes linked to plate tectonics?

Yes. 1st of all the volcanoes are formed by the plates moving together and one going on the top.


Cracks in the moon's bedrock are called A. highlands. B. rilles. C. maris. D. umbra.?

B. rilles. Rilles are long, narrow depressions on the Moon's surface that are typically formed by ancient lava flows or tectonic activity. They can appear as cracks in the bedrock when viewed from a distance.


When contients break apart into separate land masses it is called?

When continents break apart into separate land masses, it is called continental drift or plate tectonics. This process is driven by the movement of Earth's tectonic plates, which can cause continents to shift and separate over millions of years.


How did plates form?

When the entire earth formed, it had a very cool pre-ice age ice age. The magma cooled and formed these giant rocks. +++ There was a very deep ice-age in Precambrian times but long before that, the primary cooling and solidifying of the Crust into granite continental, and basalt ocean-floor, plates would have been by radiation of heat into Space.