Moon Phases

Guiding Question: What are the phases of the moon?  Why do they occur? 
Hypothesis:  I predict that all of the sides that the moon is turned that the half of thye moon will be lightened.  
Materials: 

• One big Styrofoam ball
• one  small styrofoam ball
• a toophpick
• a barbaque stick
• a torch
• and a ruler 

When making bthe expiriment today we had to gather the materials, which would represent a planet or body in space. The big styrofoam ball represented the planet Earth, which was stuck on the stick, in order to hold it without touching the styrofoam. On the big styrofoam ball was attached by a toothpick a small sturofoam ball which represented the Earhts moon. The torch represented the sun, and the ruler we had to use so we can measure the distance between the sun and the Earth, which was 30 centimeters for the model and in real life it is 149, 597, 870.7 kilometers. What i would do to resolve this question i rotated the earth slowly around to see what will happen, and I have noticed that when it is day on Earth, we see only the dark side of the moon, and when it is night we see the lighted part of the moon, which lets us see the moon. And when the moon is one of hemispheres like the west or east hemisphere, the moon will be a crescent moon. The moon changes its phase every month, due to its rotations.