Uneven Heating Between Poles and Equator

Q: Winds are generated due to ___________ heating on the earth.

Wind is air in motion. It is produced by the uneven heating of the earth's surface by the sun. Since the earth's surface is made of various land and water formations, it absorbs the sun's radiation unevenly. Two factors are necessary to specify wind: speed and direction.

Q: A flag mounted on a flag post near the sea coast flutters inthe direction of sea. At what time of the day doesthis happen at midnight or in the afternoon?

This incident , the flag will flutter in the direction of sea when it is midnight because at night time the sea becomes more hot than land and the air above sea traps heat and rises up due to which pressure difference is created and the cool air above land reaches the sea in order to maintain balance , so the flag will flutter in the direction of sea at midnight time and this phenomena is also called land breeze.

Q: State whether the following statements are True or False:i) If wind flows from land to the ocean, then it is daytime.ii) A very high-pressure system, with very high-speed wind surrounding it forms a cyclone.iii) The coastline of India is not vulnerable to cyclones. iv) Warm air is lighter than cool air.

(i). False.If wind flows from ocean to the land then it is daytime and is called sea breeze, because in daytime the land gets heated and the air above it expands and rises up, and there is the formation of low pressure are above it. (If wind flows from ocean to land then it is daytime and in the opposite condition it is night time.)(ii). False.A cyclone is a natural disaster caused by the warming of air by water vapors through ocean and revolving of high-speed winds around a low-pressure area.(not a high-pressure area)(iii). False.The coastlines of India are highly vulnerable to cyclones and also the east coast is more vulnerable to cyclones with high speed and with a high number of cyclones.The two cyclones in Odisha are an example of the vulnerability of cyclones to India. (The east coast is more likely to welcome cyclones.)(iv). True.As we know that warm air expands and has low pressure and hence it has the same mass but expanded volume or space, hence it rises up and is said that it is lighter than cool air.For example – the sea breeze and land breeze system prove the fact.

Q: Figure shows a diagrammatic representation of trees in the afternoon along a sea coast. State on which side is the sea, A or B? Give reasons for your choice.

The ground gets heated faster during the afternoon. Air over the ground becomes hotter and rises up. that develop pressure differences between sea areas and ground. therefore cold air started to flow from sea to ground that's result all trees near to sea bend towards the ground. In the given figure A represent ground side whereas B represents Sea side.

Q: Wind currents are generated due to:

The correct answer is option(A).We know poles are cooler than equator as highest intensity of the sun's heat and light falls on the equator and it reduces as we go either side of the equator towards the poles. Cooler air from the surrounding areass of the equator comes towards the equator to fill the place of warm air which rises up due to sun's heating. Hence, wind currents are generated due to uneven heating.

Q: Which area on the Earth receives maximum sunlight ?

The Earth's shape is spherical. This causes the Sun's rays to strike the Earth's surface at different angles, creating variances in temperatures on Earth. The equator receives the most direct sunlight because sunlight arrives at a perpendicular (90 degrees) angle to the Earth.

Q: Which of the statements given below is correct?

Correct Answer: Option (A)Explanation for correct answer:Land Breeze : If the wind flows from the land to the ocean in the winter, this is known as land breeze. Therefore, the correct answer is an option (A).Explanation for wrong answer:Sea Breeze : If the wind flows from the ocean towards the land, this is known as sea breeze.Therefore, the wrong answer if option (B).A cyclone is formed by a very low- pressure system with very high-speed winds revolving around it.Therefore, the wrong answer if option (C).The coastline of India is vulnerable to cyclones.Therefore, the wrong answer if option (D).Therefore, option (B), (C) and (D) are incorrect. The correct answer is option (A).

Q: What is the importance of Monsoon winds ?

The correct answer is option(B).The winds from the oceans carry water and bring rain. It is a part of the water cycle. The monsoon winds carry water and it rain.

Q: What is the direction of Monsoon winds in winter ?

Image result for what is the direction of Monsoon winds in winter.Monsoon winds blow from cold to warm regions because cold air takes up more space than warm air. So, monsoons blow from the land toward the sea in winter and from the sea toward land in the summer. India's winters are hot and dry. The monsoon winds blow from the northeast and carry little moisture.

Physics

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Uneven Heating of Land and Water

In summer, near the equator the land warms up faster and most of the time the temperature of the land is higher than that of water in the oceans. The air over the land gets heated and rises.This causes the winds to flow from the oceans towards the land. These are monsoon winds.
In winter, the direction of the wind flow gets reversed; it flows from the land to the ocean.

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Uneven heating between the equator and the poles

Regions close to the equator get maximum heat from the Sun. The air in these regions gets warm. The warm air rises, and the cooler air from the regions in the 030

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latitude belt on either side of the equator moves in.These winds blow from the north and the south towards the equator.
At the poles, the air is colder than that at latitudes about 60 degrees. The warm air at these latitudes rises up and the cold wind from the polar regions rushes in, to take its place. In this way, wind circulation is set up from the poles to the warmer latitudes.
The winds would have flown in the north-south direction from north to south, or from south to north. A change in direction is however, caused by the rotation of the earth.

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