Do you know?
How do deep sea fish live?
Deep sea fish live completely in the dark, where green plants cannot grow.They have ti withstand a strong water pressure and intense cold.For this reason, many have luminous parts to their bodies.Others have eyes trained to pick up even the tiniest glow or speck of light.Other are blind,relying on their powers of touch and many have very thick skins.All feed on remains floating down from the surface and on other marine life.
How many oceans are there?
The oceans are huge masses of water between continents, but are linked toghether to form one mass.There are three.
The most easterly is the pacific ocean, covering about 100,000,000 sq. Kms; and then comes the atlantic, with around 106,000,000 sq. Kms and the indian ocean around 75,000,000 plus the two glacier seas of the arctic and antarcticcovering the 70% of the earth's surface altogether.
Are there any sea monsters?
Hundreds of sea monsters have been reported, of every size and description.But not a single one is never been captured.We have to remember that when sailors spend months at sea, with time to look on the expanse of the oceans, imagination can play strange tricks.
And when science or technology cannot give an explanation, out of the ordinary sightings often lead to legends of sea monsters.
What colour is the sea?
Sea waters are clear, but the surface colour depends on the sky.So with a grey sky, the sea will be pretty grey and in bad weather, the sea would be leaden colour.But the deeper water, the deeper the colour, becoming blue then gradually darkening into violet.This is bcoz of the light from the rays of sun are made up of all the gradual changes or "graduations" in colour.These graduations are lost, one by one, as the light cuts through the water.
How deep is the sea?
The pacific ocean is the deepest, with a minimum depth of 4,050 metres, maximum 11,030.Next is the Indian ocean mnimum depth of 3,900 mts and maximum 9,200 mts.Atlantic- minimum 3,300 mts, maximum 9,200.The maximum depth of arctic ocean is 5,500 mts, then the mediterranean sea with a maximum depth of 5,120 mts, minimum 1,000.Bottom of the deep sea league is the baltic- minimum depth 460 mts and the north sea 90-100 metres.
Why is the sea salty?
All water contains salt.The taste depends on the quantity and the water in which it is dissolved.In the sea, the saltiness depends on the temperature, the rivers flowing into it and the currents.With high temperatures, water evaporates and the salt gets very concentrated.Rivers bring clear water - so a sea which has a lot of water has less salt than one where few rivers flow.The currents mix the waters and so dilutes the quantity of salt.
How did budgerigars get their name?
Budgerigars derived their name from the australian aboriginals.The aboriginals like to catch and eat this wild bird so they call it 'betcherrygah', which means 'good cockato'.Budgerigars are popular as cage birds.They are brightly coloured and can be taught to mimic the human voice.
What is the largest animal in the world?
The blue whale is the largest animal in the world that has ever lived.It can grow to 27 metres long, and weigh 190 tonnes(190,000 Kg)
Which bird has the widest wingspan?
Some species of the albatross can have a 3 metre wingspan- the widest of any bird.The albatross is a sea bird which glides over the waves for hours.It rides the air currents, rarely flapping its long, narrow wings.
Why does ice form?
On cold mornings, ponds and puddles may freeze.Water turns to ice when the temperature drops to zero degree celcius.When the sun comes up and it gets warmer the ice will gradually melt.
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