1. Motion of the Earth, the Moon and PlanetsEarthMoonPlanets

2. Learning Goals … I will understand key terms: rotation, revolution, tilt, solstice, eclipse. I will understand how Earth’s tilt affect the season. I will understand how the Moon affects tides. I will understand how eclipses occur.

3. Earth’s Motion Earth’s Rotation: Earth spins on its axis = ROTATION it takes Earth 24 hours to rotate Earth’s Revolution: Earth moves around the Sun = REVOLUTION it takes Earth 365.25 days to revolve Earth’s Tilt: Earth is tilted 23.5° from the vertical

4. Gravity Gravitation force: the force of attraction between all masses in the Universe Earth stays in orbit because of the balance between its forward speed and the Sun s’ gravitational pull

5. Seasons Solstice: when the tilt is either closest or furthest from the Sun – first day of Summer (closest tilt) first day of Winter (furthest tilt) Equinox: when the hours of daylight = hours of darkness (first day of Spring & first day of Fall)

6. Phases of the Moon The Moon is non‐luminous as it reflects the light from the Sun. We see different amounts of the illuminated surface of the Moon. They follow a predictable pattern called the lunar cycle.

7. TidesTides – the Pull of the Moon Tide – the rising and falling of the ocean When the Moon is overhead there is HIGH TIDE The Moon’s gravity pulls the Earth & water towards it

8. Eclipse Eclipse: darkening of a celestial object due to position of another celestial object Lunar Eclipse: Earth between the Sun and the Moon. Solar Eclipse: Moon between the Sun and Earth

9. Learning Goals … I will understand key terms: rotation, revolution, tilt, solstice, eclipse. I will understand how Earth’s tilt affect the season. I will understand how the Moon affects tides. I will understand how eclipses occur.

10. Please Complete … P328 #2, 3, 8, 11, 12