Winds Storms and Cyclones Test

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Winds Storms and Cyclones Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

Why do two balloons come closer when we blow in the space between them ?

A
Greater pressure inside the balloons than the reduced pressure in between them drives the balloons towards one another.

B
Blowing air in between increases the pressure in between the balloons pulls them closer.

C
The gravitational force pulls the two balloons closer.

D
None of the above.

Solution

When we blow between two balloons, they come closer because the pressure between the balloon decreases. The pressure inside the balloon would then push them towards each other.
Question 2
1 / -0

Which of the following constitutes a wind energy

A
Sea breeze

B
Land Breeze

C
Both A and B

D
none of these

Solution

The wind energy comes from the blow of wind. See breeze and land breeze together constitute the wind energy.
Question 3
1 / -0

An experiment is conducted to understand air pressure. Two identical balloons are filled with little water and blown. Then they have tied to a string some distance apart. What happens when air is blown in between them?

A
They move closer to each other.

B
They move further apart.

C
One moves up and other moves down

D
none of the above

Solution

When air is blown between the balloons, it creates a region of low pressure between the balloons. Since, the pressure at the outer parts is higher than inside, the balloons are pushed closer.
Question 4
1 / -0

How does blowing inside the bottle make the paper ball come out ?

A
Air pressure near the mouth of the bottle rises and reduced air pressure inside the bottle pushes the paper ball out.

B
Air pressure drops inside the bottle and the air is pressed inside and the paper ball is pushed out.

C
Air pressure near the mouth of the bottle drops and greater air pressure inside the bottle pushes the paper ball out.

D
None of these.

Solution

Bernoulli noticed that air has a lower pressure when it's moving more quickly. As you blow into the mouth of the bottle the air is moving fastest - so is at the lowest pressure. Inside the bottle, the air is moving more slowly - so higher pressure. As the pressure is higher inside the bottle than in the mouth this pushes the paper out.
Question 5
1 / -0

What role can Advanced Technology play during times of disasters like Cyclones ?

A
With the help of satellites and radars, cyclone warning can be issued in advance.

B
Safety and urgent messages can be broadcast to disaster affected people.

C
National and International organisations can come together to help the effected people.

D
Both A and B

Solution

Advanced Technology like satellites and radars, helps to issue cyclone warning in advance as they are continuously monitoring Earth from above and urgent messages can be broadcast to disaster-affected people via television and radio, these are the roles that advanced technology plays.
Question 6
1 / -0

Which of the following are not effective safety measures to be taken during a cyclone ?

A
Cyclone forecast and service

B
Rapid communication of the warnings

C
Rush out of homes in a state of panic

D
Construction of cyclone shelters in cyclone prone areas

Solution

During cyclones it is advised to:
Stay inside and shelter {well clear of windows) in the strongest part of the building, i.e. cellar, internal hallway or bathroom.
Hence rush out of homes in a state of panic is not the effective safety measures.
Question 7
1 / -0

An experiment is conducted. An empty flask is taken and clamped in an upside-down position over a beaker of water in such a way that the glass tube dips inside the beaker. The flask is heated at the top. Bubbles of air are observed in the water.
What accounts for the bubbles in the water ?

A
The air in the flask contracts and spreads out of the flask through the tube into the beaker containing water.

B
The air in the flask expands and moves out of the flask through the tube into the beaker containing water.

C
The air in the flask remains as it is and the water rises through the tube into the flask.

D
None of these

Solution

As on heating the air expands and occupies more space. And moves out of the flask through the tube into the beaker. Hence we observe bubbles of air in the water.
Question 8
1 / -0

Which of the following is/are NOT true?

A
Temperature also makes changes in air pressure

B
In cold air, the molecules are more closely packed together than in warm air, so cold air is more dense than warm air

C
Air pressure depends on the density of the air, or how close together its molecules are

D
None of the above

Solution

Air pressure is dependent on the temperature of air. More is the temperature, more is the air pressure and vice-versa. In cold air, the temperature is low and so the molecules of air have less kinetic energy. Due to this, the molecules are more closely packed together than in warmer air and so cold air is more dense than warm air. This also suggests that lesser is the temperature of air, more is the density of air and less is the air pressure. Hence, air pressure also depends on the density of the air.
So, all the statements are true.
Question 9
1 / -0

Which one of the following places is unlikely to be affected by cyclone?

A
Chennai

B
Mangalore

C
Amritsar

D
Puri

Solution

" Cyclones need large bodies of moderately warm water for their formation. They gain energy through the evaporation of water from such water bodies as the warm air above the water surface rises up.

Among the mentioned places, only Amritsar is located far away from the coastal area, all the other places namely Chennai, Mangaluru and Puri are located near the sea. So Amritsar is unlikely to be affected by a cyclone.
Question 10
1 / -0

Which one of the following place is unlikely to be affected by a cyclone?

A
Chennai

B
Mangaluru (Mangalore)

C
Amritsar

D
Puri

Solution

Cyclone is an intense circular storm formed due to the formation of low atmospheric pressure center, strong winds etc. and results in heavy rain.
Coastal areas are most prone to Cyclones.
Among the given options, Amritsar doesn't have a coast. So, it unlikely to be affected by a cyclone.

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Re-Attempt Weekly Quiz Competition

Winds Storms and Cyclones Test - 9

Result

Winds Storms and Cyclones Test - 9

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SHARING IS CARING

Question 1

Greater pressure inside the balloons than the reduced pressure in between them drives the balloons towards one another.

Blowing air in between increases the pressure in between the balloons pulls them closer.

The gravitational force pulls the two balloons closer.

None of the above.

Solution

Question 2

Sea breeze

Land Breeze

Both A and B

none of these

Solution

Question 3

They move closer to each other.

They move further apart.

One moves up and other moves down

none of the above

Solution

Question 4

Air pressure near the mouth of the bottle rises and reduced air pressure inside the bottle pushes the paper ball out.

Air pressure drops inside the bottle and the air is pressed inside and the paper ball is pushed out.

Air pressure near the mouth of the bottle drops and greater air pressure inside the bottle pushes the paper ball out.

None of these.

Solution

Question 5

With the help of satellites and radars, cyclone warning can be issued in advance.

Safety and urgent messages can be broadcast to disaster affected people.

National and International organisations can come together to help the effected people.

Both A and B

Solution

Question 6

Cyclone forecast and service

Rapid communication of the warnings

Rush out of homes in a state of panic

Construction of cyclone shelters in cyclone prone areas

Solution

Question 7

The air in the flask contracts and spreads out of the flask through the tube into the beaker containing water.

The air in the flask expands and moves out of the flask through the tube into the beaker containing water.

The air in the flask remains as it is and the water rises through the tube into the flask.

None of these

Solution

Question 8

Temperature also makes changes in air pressure

In cold air, the molecules are more closely packed together than in warm air, so cold air is more dense than warm air

Air pressure depends on the density of the air, or how close together its molecules are

None of the above

Solution

Question 9

Chennai

Mangalore

Amritsar

Puri

Solution

Question 10

Chennai

Mangaluru (Mangalore)

Amritsar

Puri

Solution

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