Noon Sun Angle = 90 – Zenith Angle Instructions: complete ...

1 Noon Sun Angle WorksheetName NameDateSubsolar Point (Latitude where the sun is overhead at noon)EquinoxMarch 22nd0oEquinoxSeptember 22nd0oSolsticeJune NSolsticeDecember SNoon Sun Angle = 90 Zenith AngleZenith Angle = latitude where you are at subsolar pointIf the subsolar point and your latitude are in the same hemisphere, the subsolar point and your latitude are in different hemispheres, : if you get a negative number, it means that no sunlight is received at that time of or it isdark for 24 hours, use 0o as your : complete the of YearSubsolarPointLatitudewhere youare "at" Zenith Angle Noon Sun AngleCalculationNoonSunAngleExampleSepte mber 220 14 14 0 = 1490 14 = 7676 N90 =2 March 2280 N90 =3 September 2280 S90 =4 June 2280 N90 =5 June 2280 S90 =6 June 220 90 =7 December 2280 S90 =8 December 2280 N90 =9 December S90 =10 March 2234 N90 = 2234 N90 = 2234 N90 = More about Noon Sun AnglesThis is a diagram of a house in Arizona.

2 Pretend that the house is in southern Arizona at 33 N. Thediagram shows summer sun's rays at noon on the June 22nd solstice and winter sun's rays at noon on theDecember 22nd What is the Angle of the sun s rays at noon during the summer (June 22nd solstice )? your work here:14. What is the Angle of the sun s rays at noon during the winter (December 22nd solstice )?_____. Show your work here:Bonus Questions15. The original diagram is not correct. The summer Angle should both be more vertical and the winterangle should be shallower. Use a protractor to check the diagram, then correct the picture. Use the white in the middle of the picture as the guide for your Would you put a shade tree on the north or the south side of the house? Why?NorthSouth KEYP roblemTime of YearSubsolarPointLatitudewhereyou are"at" Zenith Angle Noon Sun AngleCalculationNoonSunAngleExampleSepte mber 220 14 14 0 = 1490 14 = 7676 1 Equinox0 0 = = 2 March 220 80 N80 0 = 8090 80 = 1010 3 September 220 80 S80 0 = 8090 80 = 1010 4 June N80 N80 = = 5 June N80 S80 + = = means nosunlight is received0 24 hoursof night6 June N0 0 = = 7 December S80 S80 = = 8 December S80 N80 + = = means nosunlight is received0 24 hoursof night9 December = 090 0 = 9090 10 March 220 34 N34 0 = 3490 34 = 5656 N34 N34 = = S34 N34 + = = KEYThis is a diagram of a house in Arizona.

3 Let s pretend that the house is in southern Arizona at 33 diagram shows summer sun's rays at noon on the June 22nd solstice and winter sun's rays at noonon the December 22nd What is the Angle of the sun s rays at noon during the summer (June 22nd solstice )? your work here: Zenith Angle = 33 - = Angle = 90 = 14. What is the Angle of the sun s rays at noon during the winter (December 22nd solstice )? your work here: Zenith Angle = + = Angle = 90 = Bonus Questions15. The original diagram is not correct. The summer Angle should both be more vertical and the winterangle should be shallower. Use a protractor to check the diagram, then correct the picture. Use the white in the middle of the picture as the guide for your correction in diagram at the top of this page16. Would you put a shade tree on the north or the south side of the house? Why? The diagram shows that the sun is always shining from the south.

4 The shade is always cast tothe north of the tree. The smart place to put a shade tree would be on the south side of the not correct Instructions: FILL IN THE CIRCLE BY THE CORRECT ANSWER1. Why is it summer in the Northern Hemisphere in June? A. Earth is closer to the sun in June B. Sun angles are high and days are long C. The sun sends out giant solar flares in June D. The Northern Hemisphere is tilted away from the Which statement about the Vernal Equinox is correct? A. There are 12 hours of daylight and 12 hours of darkness at all latitudes. B. Sun angles are low and days are short. C. It is the first day of fall. D. Earth s axis is pointed way from the Look at the diagram above. Where is it summer? A. In Antarctica B. In the Southern Hemisphere C. At the Equator D. In the Northern Hemisphere4. Where can you go on Summer solstice (June 21st) and have 24-hours of daylight? A. The Equator B. The Tropic of Cancer C.

5 All of the latitudes from the Arctic Circle to the North Pole D. All of the latitudes from the Antarctic Circle to the South Pole5. When only a small amount of light hits a surface there is A. high solar flux and warm temperatures. B. high solar flux and cool temperatures. C. low solar flux and warm temperature. D. low solar flux and cool KEY and Explanation for Geography Assessment1. Why is it summer in the Northern Hemisphere in June? B. Sun angles are high and days are long. When the hemisphere on Earth "tilts towards thesun, as it does in the Northern Hemisphere in June, days are longer and sun angles arehigher. This means that a lot more sunlight is received, making it Which statement about the Vernal Equinox is correct? A. There are 12 hours of daylight and 12 hours of darkness at all latitudes. There are 12 hours ofdarkness and light because on the both the Vernal and Autumnal Equinox, the axis pointsneither towards, nor away from the sun.

6 The Vernal Equinox is the first day of Look at the diagram above. Where is it summer? D. In the Northern Hemisphere. The sun is overhead at the Tropic of Cancer, making higher sunangles with more intense sunlight. Also, days are Where can you go on Summer solstice (June 21st) and have 24-hours of daylight? C. All of the latitudes from the Arctic Circle to the North Pole These latitudes receive sunlight forall 24 hours as Earth spins on its When only a small amount of light hits a surface there is D. low solar flux and cool temperatures. Solar flux describes amount of sunlight that strikes agiven surface. The higher the solar flux the hotter the surface.