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.
It's also a holy city in Judaism, Islam, and Christianity, with both Palestinians and Israelis claiming the capital. Jerusalem has a population of 890,000 or more than 1 million in the metropolitan area. Tel Aviv is the financial center of Israel and the second-most populous city with 417,000 residents.