Its fruit that is similar to apple is one of the most popular fruit we have. Among the fruit species, it is probably the one that needs the largest amount...


A popular crop of ploughlands. Its oil is widely used in cookery and has well known medicinal properties.

Studying adsorption

Purifying a solution coloured with fuchsine dye with finely ground activated carbon granules and a filter.

The dangers of aluminium production

The use of bauxite, which is first processed into alumina and then into aluminium, can be harmful.

The night sky

In this video you can admire the beauties of the night sky.


The long, narrow sea inlets created by glacial erosion are called fjords. Most fjords can be found along the coasts of Norway and Iceland.


Norway is one of the countries of Scandinavia in northern Europe with a coastline laced with fjords. The capital city is Oslo.


Dragonflies are aquatic in their larval stage. They are predator insects, easily recognisable by their two pairs of transparent wings.

Eurytopic species

Certain species spread out over a large area, almost throughout the globe. They are unaffected by changes in the environment; they are called eurytopic species.


Spring is one of the seasons of the temperate climate zone. Nature comes to life, flowers start blooming and the woods and meadows turn green again.

The fig tree

Learn about the fig tree and its extraordinary fruit and find out about its medicinal properties as well..

Dehydration of sugar with sulphuric acid

In this experiment we make beet sugar, that is saccharose, react with sulphuric acid.


Since solar radiation is not evenly absorbed, the Earth's surface is heated differently. The resulting differences in atmospheric pressure cause the...


Winter is one of the seasons of the temperate climate zone. Days are the shortest and the weather is the coldest in winter.


People have always preferred to settle near rivers. What are the advantages and disadvantages of living by the water?

The change in respiratory rate during exercise

Through mild physical exercise, even a trained body doubles the number of breaths it takes within a set amount of time.

Pond slider

A popular pet of children. They can be easily recognised by the red patches behind their eyes.


The seven-spot ladybird is probably the best-known of all the ladybirds. Its conspicuous pattern warns predators of the bug’s unpleasant taste.

The story of Moses

This is the story of the birth and deeds of the biblical prophet, Moses.

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