**Rocket High**

Elizabeth Kelly Pilsen Community Academy

1420 W. 17th Street

Chicago IL 60607

(312) 535-7675

**Objective**:

Students will reinforce their measurement skills. Students will manipulate

a launcher to create specific angles. Students will be introduced to the

concept of tangents. This is for the 7th and 8th grades.

**Materials**:

Each group of four students will need:

-A water rocket and a pump.

-Launchers to rest the rockets against.

-Protractors to measure the angles at the launch site.

-A tape measure.

**Strategy**:

1. Students will determine what angle will launch water rockets to the

highest altitude. Students will use the tangents of angles to determine the

height. The angles to be used are 30, 45, 60, 75, and 90. Students will launch

the rockets at the five different angles listed above. Use two ounces of water

for each launch and pump 15 times.

2. Students will measure the distance from the launch site to the spot

where the rocket is at it's highest altitude.

3. Students will record this data. Example: 30 degrees, 14 ft.

4. Students will then find the altitude by using the formula tangent of the

angle = opposite/adjacent. Example: tan 30=x/distance from launch site to

highest altitude.

**Performance Assessment**:

Students will turn in their finished data sheet. Observations of the

students will be noted during the experiments to determine their use and

understanding of a protractor. Students will need to use data from a chart and

record accurate data in order to complete their data sheet.

**Conclusion**:

For the purpose of this experiment, air resistance and wind will be

ignored. Students will learn that the rockets will reach the highest altitude

when the rockets are shot from the higher degree of angles.

**References**:

Sneider, Cary I. **Experimenting with Model Rockets**. The Regents of the

University California. Berkeley, California. 1989.

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