Download an imaginary line that goes through Earth`s

Chapter 17 Vocabulary 1. axis – an imaginary line that goes through Earth’s center. The Earth’s axis passes through the North Pole, the center of Earth, and the South Pole. 2. rotation – the spinning of Earth around its axis 3. revolution – the movement of one object around another 4. orbit – the path Earth follows as it revolves around the Sun 5. ellipse – a stretched out circle 6. eclipse – when one object in space gets between the Sun and another object, and casts its shadow on the other object 7. lunar eclipse – occurs when the moon passes through Earth’s shadow 8. solar eclipse – occurs when the Moon passes between the Sun and Earth and casts its shadow on Earth 9. constellations – the star patterns in the sky