Motion in the Solar System Earth’s Rotation: Earth rotates about it axis once every 24 hours. -the side of the Earth fa

1. Motion in the Solar System Earth’s Rotation: Earth rotates about it axis once every 24 hours. -the side of the Earth facing the Sun is in daylight

2. Motion in the Solar System Earth’s Revolution: the travel of the Earth around the Sun -takes 365.25 days (add a day every 4 years) -revolution time roughly equates to how far away from the Sun the planet sits

3. Motion in the Solar System Earth’s Tilt: axis from North to South pole is not perpendicular to the Earth’s orbital path around the Sun -it is tilted by 23.5 degrees

4. Motion in the Solar System Earth’s Tilt: Seasons: as Earth revolves around the Sun, different areas of the Earth directly face the Sun Winter: the southern hemisphere faces the Sun Summer: the northern hemisphere faces the Sun

5. Motion in the Solar System Earth’s Tilt: Seasons:

6. Motion in the Solar System Earth’s Tilt: Seasons: Solstice: the time of the year when the tilt of the Earth is most inclined toward or away from the Sun Summer Solstice: Tropic of Cancer most directly faces the Sun Winter Solstice: Tropic of Capricorn most directly faces the Sun Equinox: the time of year when the equator most directly faces the Sun

7. Motion in the Solar System Earth’s Wobble: Precession: the changing direction of the Earth’s axis -similar to the wobble of a spinning top -wobbles in a complete circle every 26000 years

8. Motion in the Solar System Earth’s Wobble: Precession:

9. Motion in the Solar System Motions of the Moon: the Moon revolves around the Earth and rotates about its axis -the rotation rate equals its revolution rate so the same side of the Moon always faces the Earth

10. Motion in the Solar System Motions of the Moon: Tides: the alternate rising and falling of the surface of large bodies of water, caused by the interaction between Earth, the Moon, and the Sun High tide: occurs between Earth and Moon & on the opposite side of the Earth simultaneously Low tide: occurs on the side of Earth perpendicular to the Moon

11. Motion in the Solar System Motions of the Moon: Tides:

12. Motion in the Solar System Motions of the Moon: Tides: High Tides: Spring Tides: when Moon & Sun align, the gravitational pull is increased. -this creates higher than average tides Neap Tides: lower than average high tides caused when the Sun is perpendicular to the Moon and diminishes the pull of the Moon

13. Motion in the Solar System Phases of the Moon: lunar cycle: all the phases of the Moon New Moon: begins the lunar cycle -Moon is not visible because the side illuminated by the Sun faces away from Earth -amount of illuminated side visible increases from this point each night Full Moon: the entire lit side of the Moon faces the Earth -the amount of illuminated side facing the Earth diminishes from this point until the next new moon

14. Motion in the Solar System Phases of the Moon:

15. Motion in the Solar System Eclipse: darkening of a celestial body due to the position of another celestial body Solar Eclipse: when the Moon and Sun align and the Moon blocks the Sun from view

16. Motion in the Solar System Eclipse: darkening of a celestial body due to the position of another celestial body Lunar Eclipse: when the Earth is positioned between the Sun and Moon so the Moon is completely in the Earth’s shadow