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| Questions - Set 73. Water
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- Where would you find brackish water? -
At a river mouth
or estuary.
What country has the world’s highest waterfall? -
Venezuela. The
Angel Falls plunge 979 m (3,212 ft).
What river in India do Hindus consider sacred? - The Ganges. They
place ashes of the dead on its waters to send them on a spiritual
journey.
What is the deepest sea trench called? - The Mariana Trench. At
10,920 m (35,827 ft) from sea level, it could drown the Alps twice over.
Is the Pacific the world’s largest or smallest ocean? - The largest.
It is over 165 million km2 (64 million miles2) and covers more than a
third of Earth’s surface.
How many tides are there every day? - Two. A high tide and a low
tide.
Why is it easy to float in the Dead Sea? - It is salty. This huge
lake contains seven more times salt than rain water.
The Colorado river runs through what deep valley? - The Grand
Canyon. There is such little rain here that the valley sides are worn
down only by the river, which makes them very steep.
What is the world’s longest river? - The Nile in Egypt. It is 6,695
km (4,160 miles) long.
You couldn’t drive a car around this Italian city – what is it? -
Venice. The people in this city use boats instead of cars because Venice
is built on 118 small islands that are linked by canals.
Water is the only substance that is found naturally on earth in
three forms. Can you name the three forms? - liquid, gas and
solid.
Why does ice float on water? - Frozen water is (9%) lighter
than water.
Human brains are 75% water. True or false? - True
What percentage of a tomato is water? - 95%
What is the chemical formula of water? - Its chemical formula
is H2O.
What is the longest river in the USA? - The Mississippi River,
it reaches 6275 kilometres in length (3902 miles).
What is the boiling point of water at the top of Mt Everest? - Water
boils at just 68 °C (154 °F) on the top of Mount Everest
What is the second longest river in the world? - The second longest
river in the world is the Amazon River, it reaches 6400 kilometres (4000
miles) in length.
What is the PH value of water? - Pure water has no smell and no
taste, it also has a pH level around
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