NASA - National Aeronautics and Space Administration

Student Pages

Name:_____________________________

Use the information from this table to determine the scale of your Earth balloon and to calculate the size of your other models. Be sure to fill in any missing information from the tables. Measurements are presented in kilometers (km) and centimeters (cm).


 

Body	Diameter (km)	Model Diameter (cm)
Earth	12,756	20
Moon	3,476
Mars	6,794
Phobos	22

 
To find out what scale your Earth balloon is, divide the diameter of the Earth in km (12,756) by the diameter of the model in cm (20).

12,756 / 20 =

To find the diameters of the other two models, divide the actual diameter by the scale of the models (your answer from the last question).

Image to right: When compared, Jupiter is larger than Saturn and Uranus.

 


Name:_____________________________


Use this table to calculate the distances between the planets.

Bodies	Average Distance (km)	Model Distance (cm)
Earth to Moon	384,000
Earth to Mars	78,000,000

To find the distance between each of your models, divide the actual distance by the scale of the models.

Image to right: The Sun is the center of our solar system.