Laboratory Activity Inclinometer

Name: _______________________________________ Year/ Section: _________________________________ Teacher:______________________________________

Date: ____________ Score: ___________

Supplement Laboratory Activity No. 1 The Inclinometer An inclinometer is an instrument for measuring angles of slope (or tilt), elevation or inclination of an object. It is also known as a clinometer, tilt meter, tilt indicator, slope meter, slope gauge, gradient meter, gradiometer, level gauge, level meter, pitch & roll indicator. Using an inclinometer, a person can calculate the height of something that he or she can’t easily measure with a ruler. Also knowledge about the Pythagorean theorem and the trigonometric functions are an essential in determining the height of an object. Pythagorean Theorem: c2= a2 + b2 Trigonometric Functions: Sine Θ= opposite / hypotenuse Cosine Θ= adjacent/ hypotenuse Tangent Θ= opposite/ adjacent Objective/s: 1. To make an improvised inclinometer. 2. To use an inclinometer in measuring the height of tall objects. 3. To determine the height of an object using the Pythagorean theorem and the trigonometric functions. Materials: • Drinking Straw • Protractor • Washer/ 5 centavo coin • Scotch™ Tape • String • Meter Stick • Scientific Calculator Procedure/s: A. Making the improvised inclinometer: 1. Push one end of the string through the washer (5 € coin). 2. Stick/ Tape the other end of the string to the center of the protractor (90o). See to it that the string and washer can slide freely. 3. After procedures 1-2, tape the protractor in the drinking straw as seen in figure 1.2. B. Measuring the height of a tall object: 1. Choose something tall to measure. 2. Determine your distance from the base of the object that you will measure. 3. Look at the top of the object through your inclinometer and determine what angle your inclinometer measures. Write down this angle. Dominus Illuminatio Mea Dominus Illuminatio Mea Dominus Illuminatio MeaDominus Illuminatio Mea Dominus Illuminatio Mea

4. Calculate now the height of the object using the Pythagorean theorem/ trigonometric functions. Presentation of Data: Trial

Distance from the Object

Angle Measured by the Inclinometer

Height of the Object

1 2 3 Average: Calculation/s:

Conclusion/s: ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ _________________________________________________________________________________.

Prepared by: Mr. Jayson G. Chavez (06-18-2007) Dominus Illuminatio Mea Dominus Illuminatio Mea Dominus Illuminatio MeaDominus Illuminatio Mea Dominus Illuminatio Mea