Name: ___________________________________ Date: __________ Period: __________

Interpreting Planetary Data

As a rocket leaves a planet’s surface, the force of gravity between the rocket and the planet changes. Use TABLE 1 to answer the questions below. Write in complete sentences focus style.

TABLE 1

1. Where is the force of gravity on the rocket at the planet’s surface?

2. What is the force of gravity on the rocket at a distance of two units (twice the planet’s radius from its center)?

3. According to the graph, is the relationship between gravity and distance linear or nonlinear? Explain.

4. In general, how does the force of gravity pulling on the rocket change as the distance between it and the planet increases?

5. Estimate the force of gravity on the rocket at a distance of five units.

Use TABLE 2 to answer the analysis questions below. Write in complete sentences focus style.

1. Which two objects have the highest eccentricity?

2. What two objects take the longest to make one orbital period (sidereal period) around the sun?

3. Which object has the 2nd biggest inclination?

5. Which planet has a period closest to the life of an average pet dog?

6. Which planet would float in water?

7. Which planet has the 5th strongest surface gravity?

7. Albedo refers to the amount of sunlight a planet can reflect back. For example, snow reflects a lot of light while asphalt absorbs a lot of light. Which planet can reflect the most light? Why do you think is?

TABLE 2