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AIM: Explain the cause and main characteristics of the seasons globally? OBJ: Given notes and activity sheet SWBAT explain the cause and main characteristics.

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Presentation on theme: "AIM: Explain the cause and main characteristics of the seasons globally? OBJ: Given notes and activity sheet SWBAT explain the cause and main characteristics."— Presentation transcript:

1 AIM: Explain the cause and main characteristics of the seasons globally? OBJ: Given notes and activity sheet SWBAT explain the cause and main characteristics of the seasons globally with 70% accuracy DN: Watch Seasons Video https://www.youtube.com/watch?v=F1nL_M1G1Xw HW check ACT: Introduction to Seasons: Cause and Characteristics (notes); Work on eSpark Assignment HW: Complete What Causes the Seasons? Activity Sheet; Pastrami Exam, Dec. 19; Earth Science, January https://www.youtube.com/watch?v=F1nL_M1G1Xw

2 The Seasons Why equator hot and poles cold? Weather: due to the uneven heating of the earth’s surface Direct rays Indirect rays Heat energy spread out cooling effect Heat energy concentrated Heat energy spread out cooling effect

3 The Seasons Seasons: winter, spring, summer, fall (autumn); changes in precipitation and temperature during the year. Cause of the Seasons: tilt of the earth’s axis Earth’s Tilt: 23.5° from vertical 0° tilt: spring, fall only 23.5° tilt: moderate temperatures winter (cold), spring, summer (warm), fall 35°- 45° tilt: extreme temperatures winter (v. cold), spring, summer (v. hot), fall IMPORTANT: north pole axis facing Sun: Summer north pole axis facing away from Sun: Winter Seasons NOT caused by change in Earth’s distance from the Sun Earth farthest from Sun: summer (Northern Hemisphere) Earth closest to Sun: winter (Northern Hemisphere) Seasons EarthRevolvesAroundTheSun/

4 The Seasons Solstice: shortest or longest day of the year Northern Hemisphere (NYS) Summer Solstice - June 21 N.P. axis faces towards Sun More hours daylight 40°N-45°N: 15 hrs light ________________ opposite ________________ Southern Hemisphere Winter Solstice – June 21 S.P. axis faces away Sun Less hours daylight 40°S-45°S: 9 hrs light

5 The Seasons Summer Solstice June 21 Winter Solstice Dec 21 Warm Cold Towards Sun Away Sun

6 The Seasons Equinox: equal day & night (12 hours); 1 st day spring/fall March 21, Sept 23 – 12 hour day everywhere on earth N.P. axis not facing towards or away from Sun At Equator: 12 hrs daylight 12 hrs darkness year round; Sun 90° directly overhead.

7 The Seasons Summer Solstice June 21 Winter Solstice Dec 21 Warm Cold Towards Sun Away Sun

8 The Seasons Northern Hemisphere (NYS) Winter Solstice – Dec 21 N.P. axis faces away from Sun Less hours daylight 40°N-45°N: 9 hrs light _____________________ opposite ___________________ Southern Hemisphere Summer Solstice – Dec 21 (yes, Christmas!!) S.P. axis faces towards Sun More hours daylight 40°S-45°S: 15 hrs light

9 The Seasons Summer Solstice June 21 Winter Solstice Dec 21 Warm Cold Towards Sun Away Sun

10 The Seasons https://www.youtube.com/watch?v=F1nL_M1G1Xw Winter solstice Summer solstice 23.5°N 23.5°S


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