Elementary Lighted Planetarium

Description

Includes

Instruction book

Beginning model shows individual concepts, one at a time

Earth and moon move separately by hand. The ladder chain and gear drive is used solely to keep the axis of the Earth point at a 23.5° angle toward the North Star.

Demonstrates several concepts:

• The reason for the occurence of night and day
• The variation in the length of daylight
• The movement of the Earth around the sun from west to east
• Why only one side of the moon is seen from the Earth
• How eclipses of the sun and moon occur
• The cause of the phases of the moon

Order Info

• Height: 12 in. (30.5cm)
• Arm length: 17 in. (43cm)
• Sun: 5.75 in. (14.5cm)
• Earth: 4 in. (10cm)
• Globe color: Light blue or black oceans
• Electrical requirements: 110V

Specifications

• For Use With (Application): Beginning model shows individual concepts, one at a time
• Includes: Instruction book
• Height (Metric): 30.48 cm
• Height (English): 12 in.
• Product Type: Elementary Lighted Planetarium
• Quantity: Each