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Elementary Classmate Planetarium
Orrery planetarium demonstrates individual concepts, one at a time
Supplier: Science First 6533030
Includes: Instruction book, Elementary Planetariums
Description
- Earth and moon manually move independantly from one another
- Ladder chain and gear drive keeps Earth's axis pointed at a 23.5° angle, toward the North Star
- Overall height: 12 in.
- Arm length: 17 in.
- Sun: 5.75 in.
- Earth: 4 in.
Unlit model demonstrates:
- Occurrence of night and day
- Variation in the length of daylight
- Movement of the Earth around the sun from west to east
- Why only one side of the moon is seen from the Earth
- Eclipses of the sun and moon occur
- Phases of the moon
Specifications
| Demonstrate movement between sun, earth and moon | |
| 30.48 cm | |
| Orrery Planetarium |
| Instruction book, elementary planetariums | |
| 12 in. | |
| Each |
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