The equator is an imaginary line that divides the Earth into the Northern Hemisphere and the Southern Hemisphere. It is located at 0 degrees latitude and is the longest line of latitude on the Earth's surface.
Characteristics of the Equator:
Location: The equator is located at 0 degrees latitude, halfway between the North Pole and the South Pole.
Length: The equator is approximately 40,075 kilometers (24,901 miles) long.
Day and Night: Near the equator, the length of day and night remains relatively constant throughout the year, with approximately 12 hours of daylight and 12 hours of darkness.
History and Nature of Science: A student should understand the history and nature of science. A student who meets the content standard should:
Develop an understanding that historical perspectives of scientific explanations demonstrate that scientific knowledge changes over time, building on prior knowledge.
Develop an understanding that scientific knowledge is ongoing and subject to change as new evidence becomes available through experimental and/or observational confirmation(s).