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Standard 4 Key Idea 1. Performance Indicator 1.1. Explain complex phenomena, such as tides, variations in day length, solar insolation, apparent motion of the planets, and annual traverse of the constellations. Major Understanding:
An observer in space will see that Earth requires 23 hours, 56 minutes, and 4 seconds to make one complete rotation on its axis. But because Earth moves around the Sun at the same time that it is rotating, the planet must turn just a little bit more to reach the same place relative to the Sun.
Earth’s Motions. What evidence do we have to provide evidence of Earth’s motions and how do calculate its elliptical orbit? Rotation - the movement of an object in a circular motion around a line of axis. Period of Rotation - amount of time to make one complete rotation. Example: Earth rotates 360o in 24 hours. Earth’s Rotation.
2.1 Tilt, Wobble & Stretch The Earth experiences three dominant periodic motions of much longer periods that are not readily perceptible. Each of these give insight into the interior structure of the Earth or has a direct effect on the Earth's climate. 2.1.1. Axial Precession
Topic 4 Motions of Earth, Moon, and Sun. Overview: without streetlights to dim and hide the moon and planets, most cultures of the past made calculations that predicted their motions. The moon especially became a major tool for timekeeping.
Fifty years of space exploration from the earth infographic 1. The Earth Rotates About Its Axis . The Earth has a circumference (distance around at the Equator) of approximately 40,075 km (24,901 mi) The Earth rotates on its axis relative to the Sun in one "mean solar day"
Chapter 4 Motions of the Earth - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free.
