Rocks (3D0)
An introduction to rocks.
Playing time: 3 min (V651)
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Minerals (3D0)
An introduction to minerals.
Playing time: 3 min (V652)
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Different kinds of limestone (3D1)
many rocks are quite varied. This is a video about some of the many kinds of limestone).
Playing time: 4 min (V653)
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Playing time: 3 min (V654)
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A slice of a mineral (3D2)
Looking at a section of a geode to see how crystals form.
Playing time: 3 min (V655)
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Playing time: 4 min (V656)
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Looking at pebbles (3D3)
Another look at abrasion between rocks. Cross-link with geography coast, rivers and mountains.
Playing time: 2 min (V657)
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Fair test (3D3)
A fair test for mineral hardness using simple reference materials.
Playing time: 4 min (V658)
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Limestone and caves (3D5)
A visit to a limestone cave to see formations of minerals.
Playing time: 7 min (V448)
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Limestone and potholes (3D5)
How to make a model that shows the way potholes (properly called swallow holes) form in limestone.
Playing time: 4 min (V449)
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Worms and soil (3D9)
Evidence of how worms turn over soil as they look for plants to eat.
Playing time: 2 min (V659)
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