Some jobs require special clothing or uniforms. Sometimes these special clothes are meant to protect workers or the people they work with. An emergency room doctor, for instance, may wear special clothes to protect herself from blood and infectious agents as well as to protect patients from the germs and impurities that may be present on ordinary clothing. Most often, though, special clothes or uniforms are worn so that workers can be easily recognized by other people. Occupations that require uniforms are frequently service jobs, where workers help or perform services for other people. Workers in stores and restaurants frequently wear uniforms so that customers know whom to ask for help or service. Uniforms help police officers do their jobs better, because people recognize them and go to them for help or give them the cooperation they need to maintain the law. On the battlefield, soldiers wear uniforms to identify which country they are from, signaling whether they are friends or enemies.
- Why is it important to volunteer?
- What is philanthropy?
- How do firefighters help the community?
- How do police officers help the community?
- What type of people help make a community operate well?
- What is head lice?
- What do I do if witness bullying on the playground?
- Should I tell my parents I am being bullied?
- What are antibiotics?
- What causes people to pass gas?
- How does an electric car work?
- What were some of the earliest steam and gasoline driven vehicles?
- Who invented the automobile?
- How does a cable car stop and go?
- How does an escalator work?
- Why are they called skyscrapers?
- How do elevators work?
- What is the tallest building in the world?
- How is steel used in skyscrapers?
- What is the Nobel Prize?


