Objective – Explain how changes in angle of the sun's rays striking the Earth change energy and daylight
Light and Latitudes - Seasons Across the Continents
(from a lesson plan found at SkyTellers,
http://www.lpi.usra.edu/education/skytellers/seasons/activities/light.shtml
Materials
 Graph paper
 Colored pencils
 Data tables of daylight hours for two unidentified cities
Safety Concerns: None.
Procedure
1. Look at your copy of the handout showing daylight hours for two unknown cities.
2. As you make your graph (make a line graph; be sure each city is identified and
graphed in a different color), number of daylight hours in your city for each month of
the year on their graph.
3. After completing your graph, answer the questions on the worksheet.
Hours of Daylight
Objective – Explain how changes in angle of the sun's rays striking the Earth change energy and daylight
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
Objective – Explain how changes in angle of the sun's rays striking the Earth change energy and daylight
Names _____________________________________________________________
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Absent _____________________________________________________________
Light and Latitudes - Seasons Across the Continents
(from a lesson plan found at
SkyTellers/http://www.lpi.usra.edu/education/skytellers/seasons/activities/light.shtml
1. Which seasons have more daylight hours? (identify months and seasons!)
__________________________________________________________________
__________________________________________________________________
2. Which seasons have fewer daylight hours? (identify months and seasons!)
__________________________________________________________________
__________________________________________________________________
3. How does this compare with the time of year the seasons occur here in Utah?
__________________________________________________________________
__________________________________________________________________
4. Based on the data, is your city in the Northern or Southern Hemisphere? How do
you know?
__________________________________________________________________
__________________________________________________________________
Objective – Explain how changes in angle of the sun's rays striking the Earth change energy and daylight
Light and Latitudes - Seasons Across the Continents - Key
(from a lesson plan found at SkyTellers/http://www.lpi.usra.edu/education/skytellers/seasons/activities/light.shtml
1. Which seasons have more daylight hours? (identify months and seasons!)
Summer – Jun, July, Aug, Sep (if city is in the Northern
Hemisphere); December, January, February, March (if city is in the
Southern Hemisphere).
2. Which seasons have fewer daylight hours? (identify months and seasons!)
Winter – Jun, July, Aug, Sep (if city is in the Southern
Hemisphere); December, January, February, March (if city is in the
Northern Hemisphere).
3. How does this compare with the time of year the seasons occur here in Utah?
The seasons are the same if the city is in the Northern
Hemisphere; They are opposite in the city is in the Southern
Hemisphere.
4. Based on the data, is your city in the Northern or Southern Hemisphere? How do you know?
Answer will vary. The hours of daylight and the months they
occur will also let you know in which hemisphere the city is found.