Marble-ous ellipses - speed and time of orbiting bodies

Investigate the orbits of planets, comets and other celestial bodies in the Solar System.

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Keywords: Science, Biology, Plants, Seeds, Vegetables, Fruits, Food

Material:

This activity can be adapted to use a smaller ellipse board, in that case you will need less marbles and smaller rulers.
• Ellipse board
• About 75 small marbles
• 2 x metre rulers or rods
• 50 cm of string
• Marker