a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals. Define DENSITY: A measure of how much matter there is in a given amount of space.
Jerusalem is a hilly city so the altitude varies but it is approximately 750 Meters (2,500 feet) above sea level.
Israel has an estimated population of 7.99 million, which ranks 99th in the world. The country has a population density of 387 people per square kilometer (1,004/square mile), which ranks 34th. Jerusalem is the self-designated capital of Israel, although this isn't recognized by the United Nations and Israeli sovereignty over Jerusalem is disputed internationally.