Water Test

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Water Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

A sea in which people can float without sinking is:

A
Red sea

B
Black sea

C
Arabian sea

D
Dead sea

Solution

Dead sea is one of the saltiest water bodies on earth. Its salt concentration is approximately 31.5% . This is unusual and very high and results in density of 1.24 kg/I . Anyone can easily float on Dead sea because of its buoyancy.

Therefore the correct answer is option D.
Question 2
1 / -0

Which one of the following pairs is not correctly matched?

A
Kuroshio: Warm ocean current

B
Labrador : Warm ocean current

C
Benguela : Cold ocean current

D
Oyashio : Cold ocean current

Solution

Kuro Shio is also a warm water current also known as Japan Current. It occurs on the west side of the North Pacific Ocean.
Benguela current is a cold water current that flows towards the north beside the west coast of Southern Africa.
Oyashio is a cold subarctic ocean current that progresses in the South and circulates counterclockwise.
Labrador is the cold water current found in the North Atlantic Ocean.
Therefore the pair which is not correctly matched is B.
And the answer is option B.
Question 3
1 / -0

Which river crosses the equator twice?

A
Amazon

B
Congo

C
Nile

D
Orinoco

Solution

Congo is the only major river which crosses the equator twice. It is the second largest river in Africa after Nile and the second largest river in the world. Congo has a total length of 4,370 km and area about 4,000,000 km sq .
Question 4
1 / -0

The tides in the seas are influenced both by the sun and the moon. This fact is proved by ________________.

A
The spring and the neap tides

B
The bores

C
Ebb tides

D
Oceanic currents

Solution

Neap Tides occur after seven days after Spring tides. During Neap tides the Sun and the Moon are at the right angle to each other which produces moderate tides. Neap tides occur every month during the first and third quarter moon when the moon appears half full.
Spring tides occur when there is a new and full moon. During this period the gravitational pull of the sun is supplemented to the gravitational pull of the moon on Earth. As a result of this, there's an increase in the height of the high tide.
Hence it is proved that the spring tides and Neap tides are influenced by both Sun and moon.
Therefore the correct answer is option A
Question 5
1 / -0

Even though 70% of the earth's surface is covered by water, the water available for human use through rivers, lakes and tanks is only _______.

A
3%

B
30%

C
2.3%

D
0.03%
Question 6
1 / -0

Neap tides occur _______________.

A
On new and full moon days

B
On first and third quarters of the month

C
Twice daily

D
On every full moon

Solution

Neap Tides occurs after seven days after Spring tides. During Neap tides the Sun and the Moon are at right angle to each other which produces moderate tides. Neap tides occurs every month during first and third quarter moon when the moon appears half full.
Therefore the correct answer is option B.
Question 7
1 / -0

Spring tides are caused, when _____________________.

A
The earth, moon and sun are in a line

B
The moon and sun are on a line

C
The sun and moon are at right angles to each other and the earth is at the centre

D
There is new moon

Solution

Spring tides occur when there is a new and full moon. During this period the gravitational pull of the sun is supplemented to the gravitational pull of the moon on Earth. As a result of this, there's an increase in the height of the high tide. Spring tides happen when The sun, the moon, and earth are aligned.
Therefore the correct answer is option A.
Question 8
1 / -0

In which year the tsunami waves devastated the east coast of India?

A
2002

B
2004

C
2005

D
2006

Solution

Indian Ocean Tsunami of 2004, hit the coast of several countries of South and Southeast Asia in December 2004. An earthquake undersea of magnitude 9.1 struck off the coast of the Indonesian Island of Sumatra. Tens of thousands were reported dead and missing in Sri Lanka and India. The tsunami and its aftereffect were responsible for great devastation and loss at the end of the Indian Ocean.
Question 9
1 / -0

How many types of tide occur?

A
2

B
3

C
4

D
none of the above

Solution

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun, and the rotation of the Earth.

There are two main tides that are higher or lower than average. They occur twice monthly and are called neap and spring tides.

Neap Tides or Low Tides: When there is a low tide, the Moon faces the Earth at a right angle to the Sun so the gravitational force of the Moon and Sun work against each other. These tides are referred to as neap tides; a low tide or one that is lower than average.

Spring Tides or High Tides: When there is a high tide, the Sun, Moon and Earth are in alignment and the gravitational force is strong. These tides are known as spring tides and occur twice a month.

Hence, A is the correct option.
Question 10
1 / -0

Land and Sea breezes are basically caused by ______________.

A
Temperature variations in summer and winter

B
Differential heating between land and sea

C
Convergence of warm and cold currents

D
None of these

Solution

Land and Sea breezes are basically caused by differential heating between land and sea.
During the day, the wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze. The sea breeze strength will vary depending on the temperature difference between the land and the ocean. At night, the roles reverse. The air over the ocean is now warmer than the air over the land. So the pressure over water is low and high on land. So we have a land breeze blowing from land to sea.

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Re-Attempt Weekly Quiz Competition

Water Test - 6

Result

Water Test - 6

Score

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Rank

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SHARING IS CARING

Question 1

Red sea

Black sea

Arabian sea

Dead sea

Solution

Question 2

Kuroshio: Warm ocean current

Labrador : Warm ocean current

Benguela : Cold ocean current

Oyashio : Cold ocean current

Solution

Question 3

Amazon

Congo

Nile

Orinoco

Solution

Question 4

The spring and the neap tides

The bores

Ebb tides

Oceanic currents

Solution

Question 5

3%

30%

2.3%

0.03%

Question 6

On new and full moon days

On first and third quarters of the month

Twice daily

On every full moon

Solution

Question 7

The earth, moon and sun are in a line

The moon and sun are on a line

The sun and moon are at right angles to each other and the earth is at the centre

There is new moon

Solution

Question 8

2002

2004

2005

2006

Solution

Question 9

2

3

4

none of the above

Solution

Question 10

Temperature variations in summer and winter

Differential heating between land and sea

Convergence of warm and cold currents

None of these

Solution

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