This is called a tremor. They may shake you up a bit but they only last for about a minute and cause little damage. Maybe some things will fall off shelves but no building will crumble.
Many small, frequent earthquakes relieving stresses gradually are better than one large earthquake that happens infrequently in respect of the destruction to property involved.
An earthquake.
Earthquake intensity is measured using the Modified Mercalli Scale. That is basically a 'subjective' scale (as opposed to the Richter scale, which measures magnitude), because intensity is measured by the impact is is reported to have on people and their property, as reported by them. So a big earthquake like 8 on the Richter scale can have a low intensity if it happens in an area where few people live. A small earthquake can be high-intensity if it happens in a crowded area with many ramshackle houses.
earthquake aftershocks
There will never ever be an earthquake there.
A small earthquake that happens after a larger one is called an aftershock. Aftershocks happen because the crust in the area where the main earthquake happened is adjusting to the earthquake's effects.
happens after a earthquake
An Earthquake happens.
a earthquake happens whaen a plate moves that what happen when we had the christchurch earthquake happened.
a small earthquake that follows the main earthquake
A small earthquake that follows the main earthquake.
An aftershock is a small earthquake that follows the main earthquake, while a foreshock is a small earthquake that often precedes, leads to, a major earthquake.