4th Grade: Chapter 10 Vocab

petrochemical industry industries, refineries, and factories that use gas and oil to make products philanthropists people who give away money to HELP other people recession a period of reduced economic activity aerospace an industry that builds and operates aircraft, spacecraft, and satellites technology use of scientific knowledge, skills and tools to help people meet their needs software special programs that tell computers what to do interdependent reliant on one another to meet ones needs and wants pesticides chemicals that kill the pests that damage crops heritage shared history custom a way a group of people do something quinceanera a celebration when a girl turns 15 bat mitzvah a celebration when a Jewish girl turns 12 bar mitzvah a celebration when a Jewish boy turns 13 urbanization the process by which towns and cities are formed and grow as more and more people begin living and working in central areas urban sprawl the rapid growth of areas just outside a city automation the use of computers and machines to do jobs in a factory of workplace