Coastline

The coast is where the land and the sea meet. Different types of coastlines depend on the type of rock and the force of the sea waves. The coastline landscape is continuously changing because it is continually being moulded by the sea.

Creeks

The rocky walls rising up from the sea become eroded by the waves and these result in caves and creeks or inlets.

Fjords

Fjords are submerged glacier valleys flooded by water and forming deep inlets in the coastline of Scandinavia.

Sandy Beaches

When a sea or a river deposits fine materials along the coast, these deposits form low, sandy beaches.

What How Why

What is a leap Year?

It takes the Earth 365 days and six hours to orbit around the Sun. The Six extra hours cannot be counted on the calander. So, to keep an accurate count, an extra day is added at the end of february every four years.

What How Why

What are the most precious stones?

When the magma cools, the material which it contains solidifies in the form of crystals. Precious stones are crystals with particular characteristics of colour, hardness and the way they can reflect the light. They are used in making jewellery.

What How Why

How is the height of a mountain measured?

To measure the height of mountain, the surface of the sea is taken as the point of reference. The height of the mountain is the distance between the top of the mountain and the surface of the sea.

What How Why

What is an electric current?

An electric current is a passage of electrons from one electrified body to another which is less charged. When too many electrons are generated, they can move.

What How Why

Why does iron go rusty?

Rust forms on the surface of iron objects when they are exposed to the air. It is the product of a chemical reaction called oxidization. The more the object is exposed to the air, the more rapidly rust spreads.

What How Why

How fast can a dog run?

A Greyhound can run at a speed of 64km per hour, a Weimaraner , once used for hunting wolves and wild boar, can reach speed of up to 56 km per hour in a chase. Many breeds of dog which were once bred for hunting are now more common as pets than hunting Dogs.

Sand

The sand on beaches originates from the crushing of rocks, due to rain, wind, the seas and rivers. The color of the sand depends on the rocks from which it originates. For example, the sand near a coral reef is white or pinky-white, whilst sand near volcanoes is dark grey.