1. Earth in Space Mr. Woodham’s 6 th Grade Earth Science Class

2. Earth’s Movements Rotation vs. Revolution Rotation is the spin of an object about its axis. Rotation is the spin of an object about its axis. -The Earth rotates once a day (once every 24 hours). -The Earth rotates once a day (once every 24 hours). Revolution is when one object moves around another one. Revolution is when one object moves around another one. -Earth moves around the sun in a predictable way. -Earth moves around the sun in a predictable way. -The Earth revolves around the Sun every 365.26 days. -The Earth revolves around the Sun every 365.26 days.

3. Tilt of the Earth’s Axis The axis around which the Earth rotates is tilted by 23.5 degrees in relation to the Sun’s equator The axis around which the Earth rotates is tilted by 23.5 degrees in relation to the Sun’s equator Sun’s Equator Atlanta, Georgia This link will show you what Earth would be like if the Earth’s axis was tilted at a different angle

4. Solstices and Equinoxes Equinox: An equinox is one of two opposite points on the celestial sphere where the celestial equator and ecliptic intersect. Equinox: An equinox is one of two opposite points on the celestial sphere where the celestial equator and ecliptic intersect. Solstice: A solstice is either of the two times of the year when the sun is at its greatest distance from the equator. Solstice: A solstice is either of the two times of the year when the sun is at its greatest distance from the equator. Spring Equinox ~ March 21 Spring Equinox ~ March 21 Summer Solstice ~ June 21 Summer Solstice ~ June 21 Fall Equinox ~ September 22 Fall Equinox ~ September 22 Winter Solstice ~ December 21 Winter Solstice ~ December 21

5. Solstices and Equinoxes The position of the sun changes in the sky from season to season Summer Solstice in the Northern Hemisphere- on June 21 st, the sun is over the Tropic of Cancer in the Northern Hemisphere. That is as far north as you can be and still see the sun directly overhead.Summer Solstice in the Northern Hemisphere- on June 21 st, the sun is over the Tropic of Cancer in the Northern Hemisphere. That is as far north as you can be and still see the sun directly overhead. Vernal (Spring) Equinox and Autumnal (Fall) Equinox- on March 21 st and September 22 nd, the sun would be directly overhead if you were standing at the equator.Vernal (Spring) Equinox and Autumnal (Fall) Equinox- on March 21 st and September 22 nd, the sun would be directly overhead if you were standing at the equator. Winter Solstice in the Northern Hemisphere- on December 21 st, the sun is over the Tropic of Capricorn in the Southern Hemisphere. That is as far south as you can be and still see the sun directly overhead.Winter Solstice in the Northern Hemisphere- on December 21 st, the sun is over the Tropic of Capricorn in the Southern Hemisphere. That is as far south as you can be and still see the sun directly overhead.

6. The Four Seasons: The Effect of the Tilt of Earth’s Rotational Axis

7. Earth’s Climate Zones