Grade 9 Science Experiment 16 - How to Build and Use your Own Sextant
Purpose:
The purpose of this science fair project is to demonstrate how you can build a sextant to study latitude. A sextant is a measuring instrument that measures the angle of elevation of a celestial object above the horizon. The angle, and the time when it was measured, can be used to calculate a position line on a nautical or aeronautical chart. Sextant's are often used when you wish to find your latitude. A sextant can measure the angle between any two objects, such as between two lighthouses.
Hypothesis:
A sextant is a powerful tool that uses the sun and earth science properties to determine one's latitude.
Variables:
Angle of the two mirrors used in the sextant.
Materials Needed:
- Cork
- Glue
- Pins
- Glass tube
- Straw
- Sealing wax
- Large protractor
- "Moving" mirror that is 7cm by 1cm in size
- Small "Fixed" mirror
- Knife
- Large Protractor
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