Find out more about the scientific method. Science as defined above is sometimes called pure science to differentiate it from applied science, which is the application of research to human needs. Fields of science are commonly classified along two major lines: 1  Natural sciences, the study of the natural world, and.
In the center a bird rising, and surrounding this the inscription Phoenix, Arizona - Incorporated February 25, 1881.. The first horse-drawn streetcar line was built along some 2 miles of Washington Street in 1887, and the kick off of this new mode of transportation was on Nov. 5.
Guide to Phoenix weather in April The average maximum daytime temperature in Phoenix in April is a warm 29Â°C (84Â°F) with low heat & humidity. The average night-time temperature is usually a cool 11Â°C (52Â°F). There are usually 12 hours of bright sunshine each day, which represents 90% of the 13 hours of daylight.