Note for teachers: If you are having cloudy or inclement weather, please go to Activity 7a and 7b to find your data for this activity. You may also take digital pictures of your screen for Stellarium and the Website. You may also want to use these activities to double check your answers.
On March 19, 20, 21, 22 and June 19, 20, 21, or 22 you need to repeat the following measurements, record them first in your project journal and next in the Survey for Data Collection linked below.
Tools needed: protractor, compass, one meter stick, nail, thin cardboard, ruler, piece of string and writing utensil.
- Obtain a 1" x 2" piece of wood that is 1 meter tall.
- On a piece of thin cardboard draw a quadrant (1/4 of circle) using a protractor that has lines indicating every degree from zero degrees to 90 degrees.
- Glue the quadrant to the wide side of the stick ( see drawing).
- Pound a large nail perpendicular to the quadrant at the origin (see drawing).
Note: the angle on the protractor will be the angle of inclination of your solar noon when you complete the official measurement.
- Plant your 1 meter stick in the ground. It must be perfectly upright.
- Use the compass to find North.
- Plant a short stick about .5 meters North of the long stick. The sticks form a sun dial. When the shadow of the Sun touches the short stick, the time is solar noon.
- Special Note: the angle on the protractor is the angle of inclination of your solar noon.
- Enter the time and angle of inclination into your project journal.
- When you have finished, please complete the Survey for Data Collection linked to the top of this activity.