HOW DID THE NORMANS CHANGE BRITAIN?

The Normans introduced the feudal system to England. According to this system, the king owned all the land and others could hold land in exchange for providing services to the king. William the Conqueror appointed barons who were provided with estates taken from the original English earls. In return, the […]

HOW DOES A BOAT FLOAT?

The reason a boat, whatever size, can float on the surface of water is because it is the fluid itself which holds it up. The water offsets the force of gravity which tries to pull everything to the centre of the Earth. The upward push on a floating object is […]