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A colourless gas with a typical odour, produced by dehydrating methanol.
The Earth is composed of several spherical layers.
This animation demonstrates the different nets of a cuboid and includes a game.
Vertical forces can break up layers of rock into fault blocks, which then move vertically along the fracture planes.
The trumpet is a musical instrument with the highest register in the brass family.
The guitar is a plucked string instrument available in various shapes.
Panpipes (or pan flutes) are composed of several pipes of gradually increasing length.
The harp is one of the oldest plucked string instruments.
Villages established in valleys usually consisted of houses built on long and narrow plots of land.
A solid, grey substance which sublimates when heated. Its solution in alcohol is called ´tincture of iodine´, it is a disinfectant.
Karst formations include dolines and dripstones.
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
One of the twenty protein-building amino acids.
An exercise about the groups and structure of oxo compounds.
Not all nets consisting of 6 congruent squares are foldable into cubes.
The devastating defeat of the Hungarians in the battle against the Mongolians was the result of several bad decisions.
An exercise about the groups and structure of organic nitrogen compounds.
This animation presents the regions, counties and cities of Hungary.
This animation demonstrates the geographical regions of Hungary.
There are ten national parks in Hungary.