الوصف
How many days does it take the Earth to revolve around the Sun? The answer to this question and more are answered when using this gear-driven model representing the Sun, Moon and Earth and their relationships. Daylight, night, seasons, and phases of the Moon are all effectively demonstrated. Arm is 15 long; Sun is 6 in diameter; Earth is 4? in diameter; moon is 1? in diameter.
Features
Made of superior quality polymers Sturdy structure and good stability. A smooth Gear-driven model. Manually movable moon. Shadow hemisphere to represent night. Includes a detailed instruction manual.