There is an excellent article on the Christchurch earthquake at wikipedia.org.
As to the 'Plates responsible', the underlying assumption may be in doubt.
The Pacific Plate subducts under the Australian plate in the north, and the Australian Plate subducts under the Pacific Plate in the south.
The bit in between is subject to great thrust by the Pacific Plate, against the Australian Plate, and this raises the Southern Alps. These alps would have risen about 20 000m in the last 25 million years, but have been eroded away continuously, apart from the last 4000 m.
New Zealand
New Zealand is situated on the active boundary of the Pacific and Australian tectonic plates.
New Zealand is an independent, self-governing country in its own right. It is in the southern hemisphere, within the region of Oceania, which also includes Australia, Papua New Guinea and some South Pacific islands. It is not in Australia.
New Zealand was named after Zealand, a province in the Netherlands. The Dutch were the first Europeans to discover it. It does not resemble Zealand - Zealand is flat, New Zealand is mountainous.
New Zealand, like a few spots round the world, straddles two Tectonic Plates, the Pacific and the Australian. The movement between these two plates causes several things definitely New Zealand. The Volcanoes, the Alpine Fault, the Southern Alps.The Alpine Fault commences well south of NZ, continues through the country to emerge as the Hikurangi Trench, then the Tonga Trench and so on.
it happend because the teo tectonic plates rubbed together
It was the Eurasian and the Philippine plates that moved and caused the earthquake in Kobe.
PLATES
an earthquake
there's four tectonic plates under Japan. They are the North American, the Eurasian, Philippine, and Pacific plates. The 9.0 earthquake was caused when the North American & Pacific plates shifted, in a destructive manner.
Assuming you are talking about the earthquake in Japan, the two plates are the Pacific and the Asian plates.
The Haitian earthquake that occurred in January 2010 was caused by a transform boundary where two tectonic plates were sliding past each other. For more information please see the related question.
The Kashmir Earthquake was affected by the destructive tectonic plate boundaries. Eurasian and Indian plate hitting each other. Thats what caused the Himalayas. Once, they hit an earthquake occurs.
the Pacific and Australian plates collided together, to make the earthquake.
When two plates move together damaging both of the plates causing a large earthquake.
plates moved
Because two plates rubbed together which caused the land to shake!!