When two plates collide directly (versus sliding along each other) they typically form a mountain range. For example, the Himalayan Mountains are are formed by the collision of the Eurasian Plate and the Indo-Australian Plate. As John McPhee says in "Annals of the Former World", the most amazing thing is that the summit of Mount Everest, the worlds tallest mountain, is marine limestone.

Lava

theory of plate tectonics

Mantle plumes result in the formation of hot spots.

to put your food on and eat it off the plate with cutlery. thus meaning to hold your food.

they are both formed by converging plates at a BOUNDARY THAT PUSH UP THE EARTH

The plates that are currently causing Mount rainier to form is the North American plate and the Jaun de Fuca plate.

The mantle is a secrete shell. The functions of the mantle is to protect the crab.

Continental drift is the idea that Wegener created, that all the continents were once a single landmass which he called Pangaea, and they have since drifted apart.

The super continent was called Pangaea.

They are tectonic plates.

There are more than three plates.

However, here are the names of three plates, Africa, North America, South America.

The others are Europe/Asia and Australia.

They have only really affected it a couple of times really. but the main fault is out at sea therefor it caused the 2011 tsunami. if the fault was in the centre of land they would have more to worry about. They have also built buildings that can resist earthquakes.

There are no adjacent plates -_-

It is the mid-ocean ridge.

African plate

Yes, as a feature on the planet the mid-Atlantic ridge is older than the Great Rift Vally, however the present volcanic features on the ridge are just as young as those in the valley.

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Mid-ocean ridges are basically underground volcanoes that lava from the Earth's Mantle can breach. The ocean, however, freezes the lava and that in turn forms rock. If this happens repeatedly, then the older rock gets pushed away from the source, and the younger, just formed rock is, therefore, closer to the ridge. So the younger rock being formed by the ridge is pushing away the older, previously made, igneous rock.

It's difficult to be sure, since no humans were anywhere nearby when it happened, but it was probably about 150,000 years ago.

We believe that there is a stationary "hot spot" in the Earth's mantle, and that the Pacific tectonic plate has been sliding to the northwest. So the western islands like Niihau and Kauai formed long ago, and become dormant and then extinct as the plate moved; then the "hot spot" formed the island of Oahu, and then Maui and Molokai as the plate continued to move. These volcanoes are long dormant. The big island of Hawaii is currently over (or just moving off of) the hot spot, because that volcano is still active.

There's another submerged volcano southeast of Hawaii which is still erupting, and growing another island; it'll probably be another 10,000 years before that island erupts from the sea.

It's not on a boundary. It's on a hotspot, similar to Hawaii.

It was originally thought that water on earth must have come from comets and ice rich asteroids. It was thought that water must have come to earth after formation. Since we are so close to the sun the water would have evaporated away to space when the proto-earth was smaller.

There is evidence in the form of zircon crystals from 4.38 billion years ago that tells us that only 187 million years after formation. This was just not long enough for extraterrestrial objects to bring us the water. Therefore water must have been there from when earth formed.

One recent theory overcomes these problems by suggesting that the earth formed further out in the solar system and migrated in to it current orbit as it grew in mass. Since it was in a cooler orbit water could condense on the rocks and as the earth grew and as the surface cooled water literally oozed out of the rocks and into the atmosphere. When the earth cooled further it literally rained for millions of years. This water went to form the 1st oceans.

This is not the complete picture however. Studies of fossil water trapped underground for billions of years taken from volcano's in Hawaii and Iceland show that the ratio of isotopes of heavy water do not match the water we have in the oceans today.

The only credible answer to this is that about 1/2 the water on earth today was already on earth when it formed and the other 1/2 comes from comets and ice rich asteroids.

Either plates gets subducted which is usually the older plate.