CURIOUSITY QUIZ: WATER

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Test Your knowledge on 'Water' prepared exclusively according to the DAV School curriculum of 'My Living World' and the NCERT curriculum of 'Looking Around' for Class-5 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck! (Although the quiz is primarily meant for Class-5, students from Class-6 to Class-10 can, however, participate and enjoy the fun of the quiz.)

Before attempting the quiz, you may read an overview of the topic given below which will make you feel easier to answer the questions.

Overview:

Although the Earth is a water planet, water is a scarce resource on it. Most water on the Earth is located in the seas and oceans which is salty and not fit for human consumption. A large part of the freshwater is located in the ice caps and glaciers which is also not accessible to man. Out of the remaining freshwater , a large part is either underground or present in water vapours in the atmosphere which is also beyond human use. Only less than 0.3% of the total water flows in rivers and lakes in the form of freshwater which is available for human consumption. Hence, there is a great need to co serve water in our daily life.
From time immemorial, people have dug wells and stepwells to extract groundwater. Rainwater seeps through the soil and gets trapped in numerous cracks and gaps inside the underground rocks . The layer of the rocks permanently saturated with water is called Aquifer and its top portion is called the Water Table.
Liquid water , on absorption of heat, can change into vapour forms called Evaporation. The opposite process is called Condensation . A body can either float, sink or just float in a liquid depending on how dense it is in comparison to the liquid.
Water cycle is the vast natural circulation of water between the land and the air that makes the total amount of water at any ace on the earth constant. It is driven by the Sun.

Now, attempt the quiz.

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Gandhi had a long march from Ahmedabad to the Dandi seashore in 1930 to protest against the Salt law imposed by the British and to protect the rights of the Indians to prepare salt from the sea. Salt is traditionally prepared by collecting the seawater in shallow beds dug in the sand which is then allowed to dry in the sun leaving the salt on the ground. This process is called:

1 point

Transpiration

Condensation

Evaporation

Vaporization

Clear selection

Although the Earth is the water planet containing nearly 71% of water on its surface , still water is a scarce resource on it. Why?

1 point

A large part of the fresh water is locked up in glaciers and ice caps which are inaccessible for human consumption.

A large part of the fresh water is underground which are inaccessible for human consumption..

A large part of the fresh water is present as water vapour in the atmosphere which are inaccessible for human consumption.

Most water is located in seas and oceans which are salty and not fit for drinking.

All the above answers are correct.

None of the above answer is correct.

Clear selection

What is the continuous process of movement of water in nature among its three different forms by the repeated processes of evaporation and condensation called? What is its important role to sustain life on the Earth ? Who drives this process on Earth?

1 point

Water cycle; It keeps the total amount of water on the earth constant ; The Winds (respectively)

Water cycle; It keeps the total amount of water on the earth constant ;The Sun (respectively)

Water cycle; It regulates the temperature on the Earth; The Sea (respectively)

Water cycle; It determines the climate on the Earth; The Clouds (respectively)

Clear selection

Al-Biruni, the famous Persian scholar and traveller to have visited India nearly 1000 years ago, described strange water tanks dug deep below the ground with rows of staircases going up and down for entry and exit. Today, we know these as Stepwells. What was the source of water for these Stepwells?

1 point

Underground

Rain water

River beds

Lakes

Clear selection

In rain scant areas of our country like the Rajasthan, the roofs of most houses are made flat with little tanks made on it. This is for:

1 point

Protecting the house from severe cold wave of desert conditions.

Protecting the house from the sand storms ravaging the desert areas.

Preventing heat radiations to enter into the house.

The flat roofs of the house help to retain the little water collected during rainfall for use in the remaining dry period of the year..

Clear selection

It is easiest to swim in the Dead Sea as its water is more dense compared to ordinary seas allowing our body to float there more easily. Its water is more dense because:

1 point

It is an inland sea.

It rains very little there.

No river bringing fresh water opens up at this Sea .

The dissolved salt content of the Sea is very high as this is the saltiest sea.

Clear selection

Algae and certain submerged green plants which normally remain sunk during night often float in water during daytime . This is because:

1 point

In daytime, the water becomes warmer and lighter making these plants easier to float.

Green plants rise to the surface being attracted by sunlight.

In daytime , these green plants produce oxygen gas due to photosynthesis which, in form of bubbles, get trapped around them making them lighter to float..

In daytime, the winds generally blow slower allowing the green plants to float.

Clear selection

When we cover a hot cooking vessel with a cold metallic plate, the rising water vapours get deposited in the form of small water droplets on its lower surface. This is an example of :

1 point

Evaporation

Boiling

Condensation

Vaporization

Clear selection

How do the fishes manage to keep themselves floating in water although most of their body parts including bones and scales are heavier than water?

1 point

The stream-lined shape of their bodies allow them to float and swim easily in water.

They have air filled bladders that make their bodies lighter to float in water.

The dissolved oxygen gas in water enabled them to float

They float by moving their tails vigorously in water.

Clear selection

The rainwater and water from other sources such as rivers and ponds seeps through the soil and goes underground. How is the water stored in the underground that we draw with wells and tubewells for our use?

1 point

It is stored as water vapours between the two adjacent rock layers.

It is stored in vast lakes present below the Earth's crust.

It is stored in the numerous cracks and gaps within the molten rocks in the underground.

It is stored in the numerous cracks and gaps within the rocky layers in the underground.

Clear selection

A submarine is an underwater vehicle that can remain submerged in water for many days and can come to the surface only when required. How does a submarine manage to sink in water ?

1 point

The submarine is heavier than water.

The submarine generally sinks in water by running its propeller vigorously to create a downward force.

It has a tank (called Ballast Tank) which it can fill with water to become heavier to sink.

The submarine sinks in water when it takes a lot of air from the atmosphere.

Clear selection

How do the aquatic animals like fishes breathe inside water ?

1 point

They breathe by taking oxygen directly from the air.

They breathe only by taking dissolved oxygen from water.

They breathe both by taking air both from the atmosphere and waters.

None of the above answer is correct.

Clear selection

We often find dew drops get deposited on grass blades or flower petals on a cold night due to the condensation of water vapours . This means that :

1 point

Grass blades are colder than the surrounding air as they quickly lose heat .

Grass blades are hotter than the surrounding air as they quickly gain heat .

Grass blades are at the same temperate as the surrounding air .

Grass blades or flower petals contain lot of moisture allowing the dew to form more easily on their surfaces.

Clear selection

A piece of biscuits, when put on water , first floats and then sinks. Why?

1 point

A biscuit in solid form is lighter than water and, hence, it floats. However, as it absorbs water it becomes heavier due to its pasty nature making it to sink.

A biscuit is generally made up of carbohydrate which is lighter than water. However, as it absorbs water from the surroundings, it is structurally changed to a new substance which is heavier than water.

A biscuit, due to having many empty spaces filled with air , is lighter than water and, hence, floats. As it absorbs water, its empty spaces are filled up making it heavier to sink.

The biscuit chemically reacts with water to become a heavier substance than water making it to sink.

Clear selection

The leaves of desert plants like Cactus are modified into thorn like structures called Spines. This is in order to :

1 point

Prevent the loss of moisture due to evaporation.

Prevent the loss of oxygen gas due to respiration.

Prevent the loss of heat due to transpiration

Prevent the loss of water due to transpiration

Clear selection

Leaves of some aquatic plants like lotus is very broad. This is for :

1 point

To provide enough buoyancy for the plant to float in water

To maximize the degree of transpiration so as to get rid of excess of water and to maintain hydrostatic pressure

To get maximum amount of sunlight for photosynthesis

All of the above answers are correct.

Clear selection

How do some aquatic plants like Water Hyacinth keep floating on water ?

1 point

These are made up of tissues which are lighter than water.

They have large air filled cavities in their stem that makes them lighter to float.

The bubbled out oxygen gas due to photosynthesis from their leaves provide enough buoyancy to keep them floating in water.

All of the Above answers are correct.

Clear selection

The Kangaroo rat living in the desert areas never drinks water in its life; they fulfill their water requirements by eating the roots and seeds of plants and also from the humidity of the air. How do the Kangaroo rats preserve the little amount of water they have in their bodies in the harsh dry desert conditions?

1 point

They visit the desert water bodies (like the oases) from time to time to drink water.

They visit the desert water bodies (like the oases) from time to time to bath themselves in water.

They spend most of their time in underground burrows in daytime and come out only at night times to prevent the loss of water from their bodies due to evaporation.

They often drink plant juices to supplement the water requirement of their bodies.

Clear selection

The iconic ship and the largest ocean liner Titanic sank in the early morning hours of 15 April, 1912 in the North Atlantic Ocean, four days into her maiden voyage from Southampton to New York City killing nearly 2000 people onboard . The ship collided with an undersea iceberg that led to this disaster. The ice bergs float in water in a strange manner making it difficult for the ships to be spotted. How do the icebergs float in water?

1 point

They completely float in water just like a piece of cork.

They completely sink in water just like a piece of stone.

They remain submerged in water with only their tips showing up.

The floating or sinking of an iceberg depends on the salinity of the waters in which they are floating.

Clear selection

One of the reasons for life to exist on our planet Earth is that:

1 point

In its range of temperatures, water exists in the solid form of ice needed for various life processes.

In its range of temperatures, water exists in the gaseous form of water vapours needed for various life processes.

In its range of temperatures, water exists in liquid form needed for various life processes.

In its range of temperatures, water exists both in the solid and gaseous forms needed for various life processes.

Clear selection

What is NOT true about the water vapours present in the atmosphere?

1 point

The amount of water vapours present in the atmosphere determine the humidity of air.

The water vapours condense into liquid droplets on meeting with cold surfaces.

We can see the water vapours present in the atmosphere clearly.

The presence of water vapours in our atmosphere determine the kind of weather.

Clear selection

How are the clouds formed ?

1 point

The waters evaporating from the seas due to the Sun's heat form the cloud.

Clouds form when the water droplets present in the air evaporate into invisible water vapours.

Clouds form when the visible water vapours present in the air condense into invisible water droplets or ice crystals.

Clouds form when the invisible water vapours present in the air condense into visible water droplets or ice crystals over the surface of smoke or dust particles.

Clear selection

Raindrops, when just formed, are the purest form of water in nature. However, it sometimes become acidic causing potential threats to historical monuments like the Taj Mahal. How do the raindrops sometimes become acidic on reaching the ground?

1 point

By contaminated with the germs and bacteria that secrete acidic substances.

By dissolving some harmful gases released from industries and automobile exhausts

By contaminated with dust particles of the atmosphere.

By dissolving suspended carbon particles in air.

Clear selection

Both 'fog' and 'mist' are ground level clouds consisting of condensed water vapours. What is the prime difference between a fog and a mist ?

1 point

Fog is thicker phenomenon than a mist producing less visibility.

Mist is a thicker phenomenon than a fog producing less visibility

Both the fog and the mist are equally thicker and they only differ in the visibility range.

Both the fog and the mist are equally thicker and the only differ in the amount of water vapour they contain.

Clear selection

We are a group of amphibians ( that can live both on land and water) typically characterized by our lizard-like appearance with slender bodies, blunt snouts, short limbs and the presence of a tail in both larvae and adult stages. We are the second largest group of amphibians. The environmentalists regard us as 'Indicator Species' as we are very sensitive to environmental change and pollution. Can you identify us?

1 point

Gila Monster

Monitor Lizards

Salmanders

Gharials

Clear selection

What are the vitamins soluble in water ?

1 point

Vitamin B only

Vitamin C only

Both Vitamin B and C

Vitamins A, D and K

Clear selection

The process of condensation of water vapour into droplets that fall to the earth in various forms like rain, hail or snow is called :

1 point

Condensation

Shower

Fog

Precipitation

Clear selection

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