SEASONS

1. SEASONS V. Cruz

2. The Earth’s axis is tilted 23.50 from vertical. The axis always points in the same direction in space.

3. Seasons change depending on the amount of sunlight reaching the Earth as it revolves around the Sun.

4. Indirect Sunlight Light is spread over a larger area (scattered) and it is less intense. Light covers a smaller area and it is more intense. Direct Sunlight

5. During our summer the northern hemisphere is tilted toward the Sun. Summer solstice June 21-22 Direct Sunlight Direct Sunlight Direct Sunlight The hemisphere that is tilted toward the Sun receives more direct sunlight. The Sun rays are less scattered.

6. The hemisphere that is tilted toward the Sun has longer days and shorter nights. The Sun is visible for 24 hours in the Arctic Circle in June. Summer solstice June 21-22

7. During our winter the northern hemisphere is tilted away from the Sun. Indirectsunlight Indirect sunlight Winter SolsticeDecember 21-22 We are receiving sunlight at an indirect angle. The sun rays are scattered.

8. We receive less sunlight and less energy during winter. Indirect Sunlight Indirect sunlight Less thermal energy (heat) means lower temperatures in the winter.

9. During fall and spring the Earth’s axis is parallel to the sun. Sunlight Sunlight Sunlight Sunlight Vernal Equinox (Spring) –March20 Autumnal Equinox (Fall) – September 22 The northern and southern hemispheres get equal amount of sunlight.

10. March 20 Vernal Equinox December 20 Winter Solstice Direct Sunlight Indirect Sunlight June 20 Summer Solstice September 22 Autumnal Equinox

13. THE END!!