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Wind and pressure - class-X

wind and pressure

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Questions

Question 1 Multiple Choice (Single Answer)

When a fluid is heated, it expands and becomes

  1. lighter
  2. heavier
  3. no change
  4. none of these
Question 2 Multiple Choice (Single Answer)

Iron, hydrogen peroxide and carbon dioxide. When same amount heat is supplied to these three substances, which expands most?

  1. Hydrogen peroxide
  2. Carbon dioxide
  3. Iron
  4. All of these
Question 3 Multiple Choice (Single Answer)

Which of the following will rise the highest?

  1. Air at 10$^o$C
  2. Air at 40$^o$C
  3. Air at 20$^o$C
  4. Air at -5$^o$C
Question 4 Multiple Choice (Single Answer)

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

  1. Greater pressure inside the balloons than the reduced pressure in between them drives the balloons towards one another.
  2. Blowing air in between increases the pressure in between the balloons pulls them closer.
  3. The gravitational force pulls the two balloons closer.
  4. None of the above.
Question 5 Multiple Choice (Single Answer)

Which of the following is/are true?

  1. The wind blows because of differences in air pressure from one location to another
  2. Wind blows from areas of high pressure toward areas of low pressure
  3. If the high pressure area is very close to the low pressure area, or if the pressure difference is very great, the wind can blow very fast
  4. All of the above
Question 6 Multiple Choice (Multiple Answers)

Which of the following is/are correct?

  1. Warm air rises
  2. Cold air rises
  3. Cold air sink
  4. Both A and B
Question 7 Multiple Choice (Single Answer)

Which of the following is/are NOT true?

  1. Temperature also makes changes in air pressure
  2. In cold air, the molecules are more closely packed together than in warm air, so cold air is more dense than warm air
  3. Air pressure depends on the density of the air, or how close together its molecules are
  4. None of the above
Question 8 Multiple Choice (Single Answer)

____ pressure indicates sinking air where clouds cannot form. ____ pressure indicates rising air, which allows clouds to form, bringing rain or snow. Fill in the blank.

  1. High, high
  2. High, low
  3. Low , low
  4. Low, high
Question 9 Multiple Choice (Single Answer)

When a vehicle travels very fast, a region of ______ is created temporarily just behind it.

  1. High pressure
  2. Low pressure
  3. High density
  4. Cyclone
Question 10 Multiple Choice (Single Answer)

Which of the following principle shows that if you increase air speed its pressure will decrease?

  1. Darwin principle
  2. Einstein principle
  3. Bohr principle
  4. Bernoulli's principle
Question 11 Multiple Choice (Single Answer)

Increase in air speed is associated with ______________ .

  1. increasein air pressure
  2. decrease in air pressure
  3. increase in air temperature
  4. decrease in air temperature
Question 12 Multiple Choice (Single Answer)

A piece of paper is kept on the table.  You have to lift it from the table by blowing high-speed air over it. In which direction will you blow the air?

  1. Sideways
  2. In the upward direction
  3. In the downward direction
  4. In the upward direction below the table
Question 13 Multiple Choice (Single Answer)

Two pieces of papers are held parallel. Air is blown with a high speed in between them. Which of the following phenomena will be observed?

  1. The papers will move away from each other.
  2. The papers will move towards each other.
  3. The papers will stay at their position.
  4. The papers will catch fire due to increase in air temperature.
Question 14 Multiple Choice (Single Answer)

Why is warm air lighter than cold air?

  1. Due to heating, the pressure of air increases and air with higher pressure is lighter than air with lower pressure.
  2. Due to heating, the pressure of air decreases and air with lower pressure is lighter than air with higher pressure.
  3. Due to heating, air expands. When same mass occupies more volume it becomes lighter.
  4. Due to heating, air contracts. When same mass occupies less volume it becomes lighter.
Question 15 Multiple Choice (Single Answer)

The air just above the flame of burning candle will ____________.

  1. Rise up
  2. Moves down
  3. Moves sideways
  4. It will not move in any direction.
Question 16 Multiple Choice (Single Answer)

The warm air ______, and the cooler air from the regions in the 030 degrees latitude belt on either side of the _______moves in.

  1. moves downwards, equator
  2. rises, pole
  3. rises, equator
  4. moves downwards, pole
Question 17 Multiple Choice (Multiple Answers)

Choose the correct options (one or more) 
At the equator, the air is _____ than that at latitudes about 30 degrees.

  1. warmer
  2. colder
  3. heavier
  4. lighter
Question 18 Multiple Choice (Multiple Answers)

Choose the correct options (one or more)
At the poles, the air is _____ than that at latitudes about 60 degrees.

  1. warmer
  2. colder
  3. lighter
  4. Heavier
Question 19 Multiple Choice (Single Answer)

State whether true or false :
"Moisture" refers to the presence of liquid generally water in very trace amounts.

  1. True
  2. False
Question 20 Multiple Choice (Single Answer)

"Water vapor" refers to :

  1. liquid state of water
  2. solid state of water
  3. invisible gaseous state of water
  4. None of these
Question 21 Multiple Choice (Single Answer)

During day time air blows-

  1. from the land to the sea
  2. from the sea to the land
  3. from one sea to another
  4. none of these
Question 22 Multiple Choice (Single Answer)

During night time cool breeze blows from____to _____

  1. land, sea
  2. sea,land
  3. mountain,land
  4. land,mountain
Question 23 Multiple Choice (Single Answer)
State whether given statement is True or False
During the night, land cools faster than sea.
  1. True
  2. False
Question 24 Multiple Choice (Single Answer)

Which of the following constitutes a wind energy 

  1. Sea breeze
  2. Land Breeze
  3. Both A and B
  4. none of these
Question 25 Multiple Choice (Single Answer)

Which of the following can be described as convection current

  1. Sea Breeze and land Breeze
  2. Heat transfer from one end to another in a metal rod
  3. Sun's radiations
  4. None of these
Question 26 Multiple Choice (Single Answer)

How are monsoon winds formed?

  1. The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land, which gives rise to Monsoon winds.
  2. The pressure difference in adjoining areas gives rise to air movement which leads to formation of Monsoon winds
  3. Air that is warmed up near the Equator, moves towards each pole causing the Monsoon winds to blow.
  4. None of the above
Question 27 Multiple Choice (Single Answer)

What is the direction of Monsoon winds in Summer ?

  1. From ocean towards the land
  2. From land towards the ocean
  3. From equator towards the poles
  4. From poles towards the equator
Question 28 Multiple Choice (Single Answer)

Why do the polar winds not move in exact North-South direction ?

  1. The revolution of the earth affects the direction of the winds.
  2. The rotation of the earth affects the direction of the winds.
  3. The Other air currents in the atmosphere change the direction of the polar winds.
  4. None of these
Question 29 Multiple Choice (Single Answer)

What is the direction of Monsoon winds in winter ?

  1. From oceans to land
  2. From land to oceans
  3. From equator to poles
  4. From poles to equator
Question 30 Multiple Choice (Single Answer)

Which of the following is not true about the formation of winds due to uneven heating of land at Equator and Polar regions ?

  1. The winds blow from the $0-30^o$ latitudes, taking place of the warm air at the equator that has risen up, towards the equator and constitute the Polar winds.
  2. The cool air at the poles rushes in to take place of the warmer winds in the $60^o$ belt and constitute the Polar winds.
  3. The winds of the wind is not exactly in the North-South direction because of the rotation of the Earth.
  4. The pressure difference between the equatorial and polar regions leads to the formation of winds in the North-South direction
Question 31 Multiple Choice (Single Answer)

What is the importance of Monsoon winds ?

  1. They lower the temperature of areas where temperature is usually high.
  2. They bring rain and play important role in water cycle.
  3. They clear up the sky and make atmosphere sunny.
  4. None of the above
Question 32 Multiple Choice (Single Answer)

Which area on the Earth receives maximum sunlight ?

  1. Polar region
  2. Equatorial region
  3. Along the latitude of Tropic of Cancer
  4. Along the latitude of Tropic of Capricorn
Question 33 Multiple Choice (Single Answer)

What is the basis for the formation of winds due to heating of different areas on Earth ?

  1. The air in cold temperature regions gets cooled, expands and becomes more dense and rises up. It's place is taken by heavier air from adjacent regions.
  2. The air in cold temperature regions gets cooled up, expands and becomes less dense and rises up. It's place is taken by heavier air from adjacent regions.
  3. The air in high temperature regions gets heated up, expands and becomes less dense and rises up. It's place is taken by heavier air from adjacent regions.
  4. The air in high temperature regions gets heated up, contracts and becomes more dense and rises up. It's place is taken by heavier air from adjacent regions.
Question 34 Multiple Choice (Single Answer)

At poles, how is the direction of Polar winds ?

  1. Air from Polar region moves in towards the $60^o$ latitude belt
  2. Air from the $60^o$ latitude belt moves in towards Polar region
  3. Air from Polar region moves in towards the equatorial region
  4. Air from equatorial region moves in towards the Polar region
Question 35 Multiple Choice (Single Answer)

Arrange the following steps in the proper order to explain how a sea breeze occurs, near coastal regions.
(a) The temperature of land rises rapidly as compared to sea, because the specific heat capacity of land is five times less than that of water.
(b) Due to the low pressure over the land mass, the cool air over the sea starts blowing towards the land.
(c) The sun shines equally on the land mass and sea, giving equal amount of heat energy to both.
(d) The air above the land becomes hot and light, rises up and hence creates the low pressure over the land.

  1. a d c b
  2. c d a b
  3. c a b d
  4. c a d b
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