Winds Storms and Cyclones Test

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Winds Storms and Cyclones Test - 8

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following plays an important role in the early-warning systems for cyclones?

A
Helicopters

B
Submarines

C
Satellites

D
Missiles

Solution

A satellite is an artificial object which has been intentionally placed into an orbit. As satellites are able to take photographs and observes large areas of land all over the globe, hence they play an important role in early warning systems for cyclones.
Question 2
1 / -0

While drinking a soft drink with the help of a straw the pressure in the straw is _____ and the pressure in the bottle is ________.

A
High, less

B
High, high

C
Less, less

D
Less, high

Solution

While drinking a soft drink with the help of straw the pressure in the straw is less and the pressure in the bottle is higher. When the air from inside the straw is sucked out, it creates a region of lower pressure inside the straw. As the pressure inside the bottle is more, the liquid is pushed upwards in the straw.
Question 3
1 / -0

When a vehicle moves very fast a/an______it created temporarily behind it.

A
Low pressure

B
High pressure

C
Cyclone

D
None

Solution

When wind flows very fast, low pressure is produced temporarily which is filled by the rushing wind nearby.
Question 4
1 / -0

High speed winds are accompanied by :

A
Increased pressure

B
Reduced pressure

C
Water vapour

D
Static electricity

Solution

The correct answer is option(B).
Winds move from a place of higher pressure to a place of lower pressure resulting in increase in the speed of winds. Accordingly, during storm the pressure becomes low due to which high speed winds prevail. also wind speed increases due to pressure gradient.
Hence, high speed winds are accompanied by reduced pressure.
Question 5
1 / -0

Air pressure is also known as atmospheric pressure. How is it caused?

A
By the heat energy in the air

B
By the wind that blows in the air

C
By water vapour in the air

D
By the air around us that presses on the surfaces of objects

Solution

The pressure exerted by air around us is known as atmospheric pressure.
If we imagine a unit area and a very long cylinder standing on it filled with air, then the weight of the air in this cylinder is the atmospheric pressure.
Question 6
1 / -0

A strip of paper is held between thumb and finger. If we blow over the paper, what will happen to the paper strip ?

A
The paper strip will be lifted up

B
The paper strip will bend down

C
The paper strip will oscillate up and down alternately

D
None of the above

Solution

The still air below the paper had greater pressure than the moving air above the paper resulting in paper getting pushed up.
Question 7
1 / -0

Which of the following is an example of mode of transport making use of air pressure ?

A
Sailing boat in an ocean

B
Rowing boat on a windy day

C
Aeroplane in a sky

D
All the above

Solution

A moving boat's sail is shaped as an airfoil like the wing of a plane. When air moves over a plane's wing, from front to back, wind flowing over the top of the wing has to travel farther than wind flowing under the wing's bottom surface. This creates a pressure difference that lifts the plane.
Hence all the above is the answer.
Question 8
1 / -0

At the poles, the air is colder than that at latitudes about?

A
30 degrees

B
60 degrees

C
90 degrees

D
80 degrees

Solution

As air current move towards the poles from the equator, their temperature goes on decreasing. This is because of increase in altitudes. This decrease can be as less as 60 degrees at the poles than at the equator.
One of the main reasons for this phenomenon is that the sun lies over head at the equator and it's rays are directly incident over i t. While at the poles, it is present at a slant ans it's rays are incident at an angle.
So, option B is the correct answer.
Question 9
1 / -0

To keep people safe and secure during a cyclone, the government takes certain measures, such as

A
Constructing cyclone centres in the cyclone prone areas

B
Making arrangements to relocate people during cyclones

C
Providing information about a cyclone, and warning people, fishermen, ships, ports, airlines and various government agencies

D
All of the above
Solution
Safety Measures Taken by the Government to keep people safe and secure during a cyclone, the government takes certain measures, such as:
Constructing cyclone warning centers
Making arrangements to relocate people during cyclones
Providing information about a cyclone, and warning people, fishermen, ships, ports, airlines and various government agencies
Delivering accurate and effective cyclone forecasts and warnings.
Question 10
1 / -0

Which of the following are caused by wind ?

A
The rotation of windmills

B
Swinging of flowers

C
Fluttering of the flags

D
All of the above

Solution

The windmills rotate only when there is wind. Flowers swing in presence of wind. Flags also swing in presence of wind. Hence, all of the above are caused by wind.

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Re-Attempt Weekly Quiz Competition

Winds Storms and Cyclones Test - 8

Result

Winds Storms and Cyclones Test - 8

Score

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Rank

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SHARING IS CARING

Question 1

Helicopters

Submarines

Satellites

Missiles

Solution

Question 2

High, less

High, high

Less, less

Less, high

Solution

Question 3

Low pressure

High pressure

Cyclone

None

Solution

Question 4

Increased pressure

Reduced pressure

Water vapour

Static electricity

Solution

Question 5

By the heat energy in the air

By the wind that blows in the air

By water vapour in the air

By the air around us that presses on the surfaces of objects

Solution

Question 6

The paper strip will be lifted up

The paper strip will bend down

The paper strip will oscillate up and down alternately

None of the above

Solution

Question 7

Sailing boat in an ocean

Rowing boat on a windy day

Aeroplane in a sky

All the above

Solution

Question 8

30 degrees

60 degrees

90 degrees

80 degrees

Solution

Question 9

Constructing cyclone centres in the cyclone prone areas

Making arrangements to relocate people during cyclones

Providing information about a cyclone, and warning people, fishermen, ships, ports, airlines and various government agencies

All of the above

Solution

Question 10

The rotation of windmills

Swinging of flowers

Fluttering of the flags

All of the above

Solution

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