Noon Sun Angle 90 – Zenith Angle Instructions: Complete .
Noon Sun Angle ch 22ndSeptember 22ndJune 22ndDecember 22ndNameSubsolar Point (Latitude where the sun is overhead at noon)0o0o23.5 N23.5 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, subtract.If the subsolar point and your latitude are in different hemispheres, add.Note: if you get a negative number, it means that no sunlight is received at that time of year or it isdark for 24 hours, use 0o as your answer.Instructions: complete the table.ProblemTime of YearSubsolarPointExampleSeptember 221Equinox23.5 N90 – 2March 2280 N90 – 3September 2280 S90 – 4June 2280 N90 – 5June 2280 S90 – 6June 220 90 – 7December 2280 S90 – 8December 2280 N90 – 9December 2223.5 S90 – 10March 2234 N90 – 11.June 2234 N90 – 12.December 2234 N90 – 0 Latitudewhere youare "at"14 Zenith AngleNoon Sun AngleCalculation14 – 0 1490 – 14 76NoonSunAngle76
More about Noon Sun AnglesNorthSouthThis is a diagram of a house in Arizona. 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 Solstice.13. What is the angle of the sun’s rays at noon during the summer (June 22nd Solstice)? .Show 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 whitein the middle of the picture as the guide for your protractor.16. Would you put a shade tree on the north or the south side of the house? Why?
KEYProblemTime of YearSubsolarPointZenith AngleNoon Sun AngleCalculationNoonSunAngle0 Latitudewhereyou are"at"14 ExampleSeptember 2214 – 0 1490 – 14 7676 1Equinox0 23.5 N23.5 – 0 23.590 – 23.5 66.566.5 2March 220 80 N80 – 0 8090 – 80 1010 3September 220 80 S80 – 0 8090 – 80 1010 4June 2223.5 N80 N80 – 23.5 56.690 – 56.5 33.533.5 5June 2223.5 N80 S80 23.5 103.56June 2223.5 N0 23.5 – 0 23.590 – 103.5 -13.5this means nosunlight is received90 – 23.5 66.50 24 hoursof night66.5 7December 2223.5 S80 S80 – 23.5 56.590 – 56.5 33.533.5 8December 2223.5 S80 N80 23.5 103.59December 2223.5 S23.5 S23.5 – 23.5 090 – 103.5 -13.5this means nosunlight is received90 – 0 900 24 hoursof night90 10March 220 34 N34 – 0 3490 – 34 5656 11.June 2223.5 N34 N34 – 23.5 10.590 – 10.5 79.579.5 12.December 2223.5 S34 N34 23.5 57.590 – 57.5 32.532.5
KEYOriginal- not correctNorthSouthCorrectNorthSouthThis is a diagram of a house in Arizona. Let’s pretend that the house is in southern Arizona at 33 N.The diagram shows summer sun's rays at noon on the June 22nd Solstice and winter sun's rays at noonon the December 22nd Solstice.13. What is the angle of the sun’s rays at noon during the summer (June 22nd Solstice)? .Show your work here:Zenith Angle 33 - 23.5 9.5Sun Angle 90 – 9.5 80.5 14. What is the angle of the sun’s rays at noon during the winter (December 22nd Solstice)? .Show your work here:Zenith Angle 33.5 23.5 56.5Sun Angle 90 – 56.5 33.5 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 whitein the middle of the picture as the guide for your protractor.See 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. 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 house.
NameInstructions: 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 sun.2. 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 sun.3. 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. 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 temperatures.
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 summer.2. 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. The Vernal Equinox is the first day of spring.3. 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 longer.4. 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 axis.5. 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.
Noon Sun Angle Worksheet Name Name Date Subsolar Point (Latitude where the sun is overhead at noon)Equinox March 22nd 0o Equinox September 22nd 0o Solstice June 22nd 23.5 N Solstice December 22nd 23
Zenith angle (θz) is the angle between the line to the sun and the vertical axis. The basic solar angles existed on the earth's surface are shown in Figure 3. Fig. 3. The basic solar angles Zenith angle is 90º during sunrise and sunset whereas it is 0º at noon. Zenith angle is calculated depending on the other angles [14, 16, 20].
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Before measuring an angle, it is helpful to estimate the measure by using benchmarks, such as a right angle and a straight angle. For example, to estimate the measure of the blue angle below, compare it to a right angle and to a straight angle. 90 angle 180 angle A right angle has a measure of 90
An angle is said to be an obtuse angle if it is greater than 90 but is less than 120 . Straight Angle An angle whose measure is 180 is a straight angle. This angle got its name as it forms a straight line. AOB is a straight angle. Reflex Angle A reflex angle
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