Question 1

Winds are generated due to ___________ heating on the earth.

Accepted Answer

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.

Question 2

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?

Accepted Answer

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.

Question 3

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.

Accepted Answer

(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 &#8211; the sea breeze and land breeze system prove the fact.

Question 4

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.

Accepted Answer

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.

Question 5

Wind currents are generated due to:

Accepted Answer

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.

Question 6

Which area on the Earth receives maximum sunlight ?

Accepted Answer

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.

Question 7

Which of the statements given below is correct?

Accepted Answer

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).

Question 8

What is the importance of Monsoon winds ?

Accepted Answer

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.

Question 9

The Earth does not receive an equal amount of solar energy at all latitudes.

Accepted Answer

As one goes from low altitude to high altitude temperature decreases.

Question 10

What is the direction of Monsoon winds in winter ?

Accepted Answer

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.

Revise with Concepts

Uneven Heating Between Poles and Equator

Quick Summary With Stories

Wind Currents

Introduction To Wind Currents

Summer And Winter Monsoon

Importance Of Summer Monsoon

Sea Breeze And Land Breeze