1. Hand in your Scientific Sherlock! Answer the question on your handout:
HW: Seasons Worksheet in lab manual – page 7. Finish lab if not done in class. Alien Illustration-due tomorrow.
Do Now: /22/17
Hand in your Scientific Sherlock!
Answer the question on your handout:
Why is the climate warmer at the equator than at the North and South poles?

2. Why is the climate warmer at the equator than at the
North and South poles?

4. Common Misconceptions:
The Earth’s Seasons
Common Misconceptions:
Some students believe the season are caused by the earth’s distance from the sun
Fact: During our summer months the N. Hemisphere is actually farthest from the sun
Some students believe the sun is not the center of earth’s orbit
Fact: Although earth’s orbit is nearly a perfect ellipse shape with the sun offset, the distance to the sun remains constant all year
Some students believe the earth’s tilt causes it to become closer to the sun at different times of the year
Fact: The tilt does NOT make a significant difference in the distance of the earth to the sun

5. We have seasons because Earth’s axis is tilted
as it moves around the sun

6. Important Days in the Astronomical Calendar
The ____________ is the first day of
summer and the ______________
day of daylight hours the year in the
Northern Hemisphere.
Summer Solstice
Longest
June 21
The ____________, is the first day of
winter and the ______________
day of daylight hours the year in the
Northern Hemisphere.
Winter Solstice
Shortest
December 21

7. Important Days in the Astronomical Calendar
Equinoxes, on the other hand, occur during
transition periods when the North Pole is pointing
neither directly toward nor directly away from the sun.
These days are marked by ________________
periods of light and darkness.
Equal
12 hrs
12 hrs

8. Important Days in the Astronomical Calendar
The ____________ equinox is the
first day of autumn and occurs when
the North Pole begins to lean
____________ from the sun.
Autumnal
September 23
Away
The ____________ equinox is the first day of spring and occurs when the North Pole begins to lean ______________ the sun again.
Vernal
Towards
March 21

9. June 21 (beginning of summer)
December 21 (beginning of winter)
March 21 (beginning of spring)
September 23 (beginning of fall)

10. BrainPOP!

11. Why Do We Have Seasons? Objective: To understand the reason that Earth
has seasons
Class Demonstration
Lab Manual pg 5

12. Season’s Song Just Can’t Get Enough! (Black Eyed Peas)