International Young Naturalist’s Tournament

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Presentation transcript:

International Young Naturalist’s Tournament IYNT 2016 Iran-Shiraz International Young Naturalist’s Tournament

#problem number 15 mountain speak Reporter : Mahdiyeh Shahrabi Maple group

15. Mountain Peaks What methods are used to determine the elevation of the World’s highest mountains? Suggest your own experimental method and determine the height of a mountain or a hill of your choice.

Al-Biruni'sClassic Experiment. Method professional Altimetry SAR Altimetry Theodolite experimental Temperature of air Al-Biruni'sClassic Experiment. Using a Clinometer Shadow of the mountain

Satellite altimetry Function

SAR Altimetry (synthetic aperture radar)

Theodolite

Temperature of air For example if the air temperature at top of mountain is -10 degrees and 20 degrees in the hillside , altitude mountain will be 5000 meters

Al-Biruni'sClassic Experiment Angle of elevation Al-Biruni'sClassic Experiment Using a Clinometer

Knowledge of trigonometry Angle of elevation An astrolabe Knowledge of trigonometry

An astrolabe Clinometer

Al-Biruni's Classic Experiment •Angle of elevation of the mountain top at two different points lying on a straight line were measured using an astrolabe. The third being the distance between these two points. Al-Biruni's Classic Experiment

H= E+D Tan(a) Elevation of mountain= height of Clinometer + distance to mountain tan of angle H= E+D Tan(a)

Use knowledge of trigonometry sine

sine the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right triangle) to the hypotenuse