How To Make A 3d Model Of The Earth S Layers. Draw an outline of the continents onto your ball. The tennis ball should be filled with different layers of clay.
For this you can either use a foam saw or the foam wire cutter it heats up and cut clean through the foam. There are lots of ways to make working model of earths layer as school science project. Fit it into the inner most hole.
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You can cut the ball in two halves like a grapefruit or slice out one triangle chunk to show the earth s layers. Create a depression hole in the middle of this layer for the inner core. First cut out a portion of the 8 foam ball to show the layers of the earth. Painting the outside of the ball blue and green with acrylic paint or kid safe.
