1. Indirect Measurement: Using a Hypsometer • Materials: • 10” square piece of cardboard • Drinking straw • Small washer • Tape • String • Mark 10 equal intervals on sides AB and CB • Tape a drinking straw to side AD. • Tape one end of the string to side CD and put through the straw. • On the loose end of the string tie the washer. A D B Z C

2. How to Use the Hypsometer R • Segment RG represents the object you are going to measure. Point D is the location of your eye when you position the hypsometer. Point H is the location of your feet. • Hold the hypsometer, viewing through point D and looking-up with point A (on the hypsometer) directed towards the top of the object (point R). Point D on both the drawings are the same point! • Hold the string down tight to the cardboard so that you can note the distance from point B to Z (on the hypsometer). Mark this distance on the appropriate column on the Data Table. Q G D H • When marking the distances, in the Data Table from points A to B should be the same for all your objects measured. • Using the tape measure, measure the distance from points G to H. Enter that distance in the appropriate column of the Data Table. • Measure the distance from points D to H. Enter that distance in the appropriate column of the Data Table.

3. Person with Hypsometer__________________________Recorder_________________________ Complete the calculations for each row in the table and attach your work. Use the following formula to calculate the value of QR: Calculate the height of the object (RG) by adding DH and QR.

4. Please respond to the following questions in complete sentences . Share your responses with me as a Google Document titled: Grade 9_first name last name_Hypsometer Activity. I WON’T GRADE IT IF IT IS NOT TITLED CORRECTLY. • Why does this method of measurement with the hypsometer work and how does it apply to what we learned in class? Write a minimum of 5 sentences. • Why is it important to have the same person hold the hypsometer when you are measuring? Write a minimum of 3 sentences. • How accurate were your measurements? Why? Write a minimum of 5 sentences. • What improvements could you make ? How would these changes improve the activity? Write a minimum of 7 sentences. • How are the same principles used in the activity applied in real life? Write a minimum of 5 sentences.

5. Grading • Criterion A: Table and your calculations. 8 points • Criterion B: Questions 1 and 2. 8 points • Criterion D: Questions 3, 4 and 5. 6 points • I would advise you to look at what is expected to earn the maximum points by reading over the criteria at mrsriegels.weebly.com under the MYP tab. • The sentence requirement is a minimum. The more detail and explanation you give, the better.