Ch.19 Earth, Moon, & Sun

1. Ch.19 Earth, Moon, & Sun Section 3: Phases, Eclipses, & Tides

2. Section 3 • Motions of the Moon • The changing relative positions of the moon, Earth, and sun cause the phases of the moon, eclipses, and tides

3. Section 3 • Phases of the Moon • Phases • The phase of the moon you seed depends on how much of the sunlit side of the moon faces Earth • What is a new moon?

4. Section 3 • Eclipses (when an object in space comes between the sun and third object, it casts a shadow on the object • When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs • Two types of eclipses • Solar eclipses • Lunar eclipses

5. Section 3 • Eclipses • When Do Solar Eclipses Occur • A solar eclipse occurs when the moon phases directly between Earth and the sun, blocking sunlight from Earth • Solar eclipse • Total Solar Eclipses • Umbra • Partial Solar Eclipses • Penumbra

6. Section 3 • Eclipses • When Do Lunar Eclipses Occur • Lunar eclipses • During a lunar eclipse, Earth blocks sunlight from reaching the moon • Total Lunar Eclipses • Partial Lunar Eclipses • During which phase of the moon can lunar eclipses occur?

7. Section 3 • Tides (the rise & fall of ocean water that occurs every 12.5 hrs or so) • Tides are caused mainly by differences in how much the moon’s gravity pulls on different parts of Earth • The Tide Cycle • Spring Tides • Neap Tides