How the solar system was formed, how to measure the circumference, weight and temperature of the Earth, which holds on its surface such large bodies as mountains.
By what laws are the relief of the continents and the bottom of the oceans. Why are sources, natural fountains, as well as caves and underground rivers. Valley and ravines, by what laws of nature they appear. Why the sea current leads to the appearance of shallows and estuaries. What properties do firn and glazing ice have. Under what conditions are coral islands and volcanic eruptions occur.
What is called volcanic needles, domes and bombs with bread crust. Crystals and precious ores are the result of groundwater activity, the speed of the river can be measured using a coloring substance. The recesses in the form of gutters in alpine meadows are not at all the channel of the underground river. An ordinary track after a while turns into a ravine. Troundwords and stones of the correct shape found in the dunes and glaciers are not at all a product of human …
Author
Agafonov Valerian Konstantinovich
Publisher
Book, 2014
Series
The world around us
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