what is a earthquake

look it up in a dictionary

science is hard but hang in there

If you want to read about earthquakes, an encyclopedia can give much information. Look on plate tectonics. The core of the earth is very hot and consists of molten magma. There are a number of "plates" on which land rests. When these plates move the edges rub against one another and that causes bumping, grinding, and this translates on the earth's surface as an earthquake. I hope this helps.

The dictionary and encyclopedia are both good sources of information. Another source is the Internet. I searched Google under the key word "earthquake" to get these possible sources:

http://en.wikipedia.org/wiki/Earthquake
http://projects.crustal.ucsb.edu/understanding/
http://www.fema.gov/kids/quake.htm

I hope this helps a little more. Thanks for asking.