1. Seasons and the Sun

2. Sunrise/Sunset On the horizon, the positions of sunrise and sunset shift with the seasons.

3. Sunrise/Sunset On the horizon, the positions of sunrise and sunset shift with the seasons.

4. Sunrise/Sunset On the horizon, the positions of sunrise and sunset shift with the seasons.

5. Sunrise/Sunset On the horizon, the positions of sunrise and sunset shift with the seasons.

6. High Noon? The Sun does NOT necessarily pass overhead at noon

7. Influence of latitude and date The latitude from which the sun is observed and the date on which it is observed, determine its altitude and sunrise/sunset positions. June 21December 21

8. Tilting with the Sun The seasons are primarily caused by the angle of tilt of the Earth’s axis.

9. Axis of Tilt The Earth’s axis is fixed in space; points same direction relative to the plane in which it revolves around the sun. KKKKKKKK

10. Sun’s apparent motion The Sun’s apparent shift of sunset/sunrise and noon time position is due to the Earth’s axis’ tilt and the fact that the axis is fixed in space Winter 52° latitude

11. Sun’s apparent motion The Sun’s apparent shift of sunset/sunrise and noon time position is due to the Earth’s axis’ tilt and the fact that the axis is fixed in space Summer 52° latitude

12. Reason for Season The biggest impact on Earth’s seasons is the angle at which sunlight hits on Earth. Direct Glancing/indirect Glancing/Indirect

13. Day and Night The length of daylight is impacted by the tilt of Earth’s axis and its position in its revolution around the sun.

14. The Distance Factor The Earth’s distance from the Sun has NO impact on the seasons. The orbit is eliptical, but it is close to circular.

15. Other things to know for the Quest Vocabulary: –Horizon –Altitude –Longitude –Latitude –Azimuth –Scientific notation –Rotation –Revolution Be able to do –Identify a location given latitude and longitude –Given a location on a map showing latitude and longitude lines, be able to determine its latitude and longitude –Convert a number into scientific notation –Divide two numbers written in scientific notation –Interpret information related to the sun and seasons presented in a diagram