Angle of Insolation – Report Sheet

Name: ______Date: ______

300 Angle of 600 Angle of 900 Angle of

Insolation Insolation Insolation Time (minutes) Temperature (0C) Temperature (0C) Temperature (0C) 0 1 2 3 4 5 6 7 8 9 10

Questions: Answer all questions in complete and grammatically correct sentences.

1) Create a graph, on graph paper, to reflect your temperature readings using Time vs. Temperature. Make sure to include a key to signify the different angles of insolation.

2) Why was it necessary to make sure the thermometer bulbs were directly under the lamp and positioned exactly the same for each phase of the experiment?

3) Direct rays are rays of light that strike the surface at an angle of 900 (perpendicular rays). Which thermometer received the most direct rays?

4) Which thermometer heated to the highest temperature?

5) How did the less direct rays (lower angle of insolation) affect the maximum temperature reached?

6) As the angle of insolation increases from 300 to 900, how was the RATE of heating of the surface affected?

REFER TO THE FOLLOWING DIAGRAM TO ANSWER QUESTIONS 6 THROUGH 10

7) How does the angle of insolation vary from sunrise to noon?

8) How does the angle of insolation vary from noon to sunset?

9) At what time of day is the angle of insolation the greatest?

10) At what time of day will the shadow be shortest?

11) At what time of day will the intensity of insolation be greatest?

REFER TO THE FOLLOWING CHART TO ANSWER QUESTIONS 11 THROUGH 15

Location Latitude Date Sun’s Noon Hours of Elevation Daylight North Pole 900 N March 00 24 Equinox June Solstice 00 24 September 00 24 Solstice December -- 0 Solstice New York 410 N March 490 12 City Equinox June Solstice 72 1/20 15 September 490 12 Solstice December 25 1/20 9 Solstice Equator 00 March 900 12 Equinox June Solstice 66 1/20 12 September 900 12 Solstice December 66 1/20 12 Solstice South Pole 900 S March 00 24 Equinox June Solstice -- 0 September 00 24 Solstice December 23 1/20 24 Solstice

12) The angle of insolation is also called the elevation of the sun. According to the chart above, is the angle of insolation the same at all locations on the June solstice (first day of summer)?

13) According to the chart above, as you go from the latitude of the Equator to the latitude of the North Pole on the March Equinox (first day of spring), what happens to the angle if insolation at noon?

14) According to the chart above, is the angle of insolation at noon for New York City the same every day of the year?

15) According to the chart above, what happens to the angle of insolation at noon for New York City from the December Solstice (first day of winter) to the June Solstice (first day of summer)?

16) According to the chart above, what happens to the angle of insolation at noon for New York City from the June Solstice (first day of summer) to the December Solstice (first day of winter)?