Kerala SCERT Class 10 Social Science 2 Chapter 2 In Search of the Source of Wind Question Answer Solution Here. Kerala Board Class 10 Students can find Here 2nd Chapter In Search of the Source of Wind Notes provide by our Teacher. Important Question Answer from Chapter 2 In Search of the Source of Wind.
- Board- Kerala Board.
- Class – 10.
- Subject – Social Science 2 Part 2
- Chapter – 2.
- Chapter Name – In Search of the Source of Wind.
- Topic – Question Answer Solution.
(1) How many people have Vasco da Gama on their team?
Answer: He has 170 people in his crew.
(2) When did Vasco da Gama arrive in India?
Answer: He arrived in India on May 20, 1498.
(3) How many days does Vasco da Gama have in Malind?
Answer: It takes 130 days to reach Malind.
(4) Did Vasco da Gama embark on an important trip to Brazil?
Answer: Vasco da Gama and his team started in eastern Brazil.
(5) What effect does the wind have on us?
Answer: Alcohol found on the coast is a similar energy product. When the sun rises, the temperature of the sun is like the speed of water on the ground. As a result, a system for high and low pressure was developed. In the morning the soil is warmer than water.
(6) What is the time of the world?
Answer: The international line is a boundary line that extends from the North Pole to the South Pole and prevents a change in the calendar day.
(7) How was the world born?
Answer: The international dating system is a line along the meridian of the 180id Pacific Ocean, an extension of the eastern global dating line around the Pacific Ocean and the Pacific Ocean.
(8) What is the relationship between barometric pressure and surface pressure?
Answer: The air pressure corresponds to the height.
(9) Why temperature fall down?
Answer: This is because, like everyone else, the air expands as it heats up, the air expands so much that it rises. The mounting machine extends to the edges and begins to cool and, if rejected, cools. As a result, the air temperature drops and the temperature rises.
(10) Colder tropical region air conditioning compared to low temperature areas?
Answer: Because we know that the temperature rises, the air changes and the temperature returns, when the temperature is below the freezing point, the cooling temperature will rise higher and in the air area it is higher. Over low air pressure. As is known, wind-related temperatures are lower in warmer regions than in cooler regions.
(11) What is moisture?
Answer: Humidity is the value of air.
(12) What is the ratio of humidity to air pressure?
Answer: Humidity is the value of air. If the water vapor in the air is greater than the air, the relative humidity will be lower. Humidity and wind pressure are inversely affected.
(13) What affects the barometric pressure measurement?
Answer: Temperature, humidity and temperature affect the air quality.
(14) What causes high and low temperatures?
Answer: High and low winds have been raised and winds. It rises when the wind blows, causing low energy. When the air cools, it gives off a lot of energy and energy to the face.
(15) What is a measure of mercury and how does it work?
Answer: An energy control industry called mercury parameter is stored in small particles such as Millibar (MB) and Hectopascal (hPa). The mercury content of the air in the air is 76 cm. The wind currents are 1013.2 MB and 1013.2 hPa.
(16) What is the difference between sea level and barometric measurements?
Answer: The wind speed is lower due to the heavier space. By lowering the pressure to 1 millibar (mb) and 10 m above sea level, air pressure is reduced by insufficient air.
(17) What are pressure belts?
Answer: When hot air gets lighter and at equator air rises, it creates low pressure and the cold air creates high pressure.
(18) How many pressure belts are there?
Answer: There are seven pressure belts starting from the North Pole from the top to down till the South Pole.
Polar high pressure belt at 90°
Sub polar low pressure belt at 60°
Sub tropical high pressure belt at 30°
Equatorial low pressure belt at 0°
Sub tropical high pressure belt at 30°
Sub polar low pressure belt at 60°
Polar High pressure belt at 90°
(19) Explain Equatorial low pressure belt.
Answer: Equatorial low pressure belt is the zone where rays of the sun reach vertically for whole year. The temperature of this zone is high and due to high temperature the air expands and that’s the reason of low pressure in this zone. This zone is in the middle of both North and South latitudes. At this point the air calm down and wind gets lighter between North and South latitudes. This pressure belt is also known as ‘Doldrums’ which means ‘the zone with no winds’.
(20) Why Equatorial low pressure belt was nightmare for ancient mariners?
Answer: In ancient time mariners were dependent on air to sail the ship. In this belt there was very low air pressure which was not enough to push the ship this is the reason that in ancient time Equatorial low pressure belt was nightmare for mariners.
(21) Why Sub tropical regions acquired the name ‘Horse Latitude’?
Answer: Europeans exporting horses of superior breed to America. Cargo ships were used to carry these horses to America. In the Sub tropical air, due to feeble winds it was not possible to sail well. So to make the ship lighter Europeans used to throw many horses in the ocean and thus the zone acquired the name ‘Horse Latitude’.
(22) What is Sub Polar low pressure belt?
Answer: In this zone the air is colder and due to coldness air gets heavier and remains close to the Earth. While rotating the earth throws the air away and the low pressure being created.
(23) What is Polar high pressure belt?
Answer: This zone remains severely cold whole year and face extreme cold. The pressure at this belt is steady and high.
(24) What is wind?
Answer: The horizontal movement of air from high pressure zone to low pressure zone is called wind.
(25) Which circumstances are responsible for the speed and direction of wind?
Answer: The speed and direction of wind are depending on pressure gradient, Coriolis force, friction.
(27) What is Pressure gradient?
Answer: The change in pressure with horizontal distance is termed as pressure gradient.
(28) How are winds named?
Answer: Winds are named based on the direction they are coming from. For example, an south wind is one that is blowing towards the south from the north.
(29) What is peculiarity of the source region influence the nature of wind?
Answer: The peculiarity of the source region influence the nature of wind are winds blowing from the sea will be saturated with moisture whereas the moisture content will be less in winds blowing from their drier region.
(30) What is Coriolis force?
Answer: Freely moving bodies get deflected to the right in the Northern hemisphere and it left in the southern hemisphere. This is due to the force generated as a result of Earth’s rotation which is known as Coriolis force.
(31) What is Ferrel’s law?
Answer: The Coriolis force increases as it moves towards the poles from the equator. The winds in the Northern hemisphere turns right side of it and the air in the southern hemisphere turns to its left and it happens because of Coriolis Effect. The law put forward by Admiral Ferrel on the basis of this is known as Ferrel’s law.
(32) Between the ocean surfaces and denser forest in which situation wind will blow smoothly?
Answer: In Ocean surface the speed of wind will be high because there is less friction and in denser forest the friction is more along difficult terrain and places the speed of wind will be less.
(33) What we can do to prevent desertification?
Answer: Trees should be planted along the border of desert. It is measured to reduce the desertification of the wind thereby preventing the expansion of desert.
(34) What are planetary winds?
Answer: Winds blow from high pressure region to low pressure region. The winds developed between the global pressure belt are called planetary winds the different plantery winds are Trade Winds, Westerlies, Polar easterlies.
(35) What are trade winds?
Answer: The winds which continuously blow towards the equatorial low pressure belt are known as trade winds. As these winds blow from northern hemisphere they are known as Northern trade winds.
(36) What is inter-tropical convergence zone?
Answer: The equatorial low pressure zone where the trade winds from both the hemispheres converge is known as Inter Tropical Convergence Zone (ITCZ).
(37) What could be the reason for the trade winds blow from the southeast and northeast direction?
Answer: Because the earth is rotating and the air is blowing the winds in the Northern hemisphere takes a curve to the right and the air in the southern hemisphere creates takes curves to the left.
(38) What are the westerlies winds?
Answer: The winds which blow continuously from the sub tropical high pressure zone to low pressure zone. As the direction of these winds is mostly from the west they are known as westerlies winds.
(39) What are Polar easterlies?
Answer: The polar winds are cold winds that blow from these high pressure areas towards the sub polar low pressure belt. These winds are blow from the east in the both hemisphere due to the Coriolis forces. They are known as Polar easterlies.
(40) What are the Periodic winds?
Answer: Periodic winds are the winds that repeat at regular intervals of time and can be seasonal or diurnal. Manson winds are the example of periodic winds.
(41) What is monsoon?
Answer: The term ‘Monsoon’ is derived from the Arab word ‘Mousom’. It means winds that change the direction accordance to the season. Monsoon reverses the air flow from the year.
(42) Which factors are responsible for the formation of the monsoon wind like?
Answer: The factors which are responsible for the formation of the monsoon wind are:
(i) the apparent movement of the Sun
(ii) Coriolis forces.
(iii) Differences in heating.
(43) What causes the winds reversals of the Monsoon?
Answer: when air crosses the equator as it flows from the cold winter hemisphere toward the ITCZ in the summer hemisphere, it experiences a change in the Coriolis force. As a result, the wind turns in that direction and blows west in winter and east in summer.
(44) What is the reaction of heat to Water/ sea and land?
Answer: The reaction of heat to Water/ sea and land are not uniform. The land heat up and cool down quickly but the sea heat up slowly and can retain heat for longer time.
(45) What is the process of Sea breeze?
Answer: A sea breeze describes a wind that blows from the ocean inland towards land. However, the water heats up very slowly so the water temperature is lower than the ground, hence the air below is warmer than the sea. Hot air on the land rises throughout the day, which causes low pressure at the surface.
(46) What is Valley breeze?
Answer: These are the winds experienced in the mountainous region that are well above the sea level. During the day time the air above the sea level get heated and raised up. As the result the winds blows up the slopes from the valley with relatively lower temperature this is known as Valley breeze.
(47) What is mountain breeze?
Answer: The air in the mountainous regions cool due to the intense cold conditions in the region. Cold air is dense so it blows to the valley. This is known as mountain breeze.
(48) What are local winds?
Answer: Local winds are winds whose effects are limited to a relatively smaller area. Formed as a result of the local pressure difference these winds are weak.
(49) State the names of local winds found in India and other part of the world.
Answer: The local winds are exist in different part of the world like Loo, Mangoshowers, Kalbisakhi are the local winds experienced in India. Chinook, Harmanttan and Foehn are some of the local winds in other part of the world.
(50) What are Mango Showers?
Answer: These are the winds which blowing from Rajasthan dessert rise the summer temperature of the north Indian plains. The winds that blow from South India during this season are called as Mango Showers. These winds cause the ripening and fall of mangoes hence name as Mango Showers.
(51) What are the variable winds?
Answer: Variable winds are the winds with entirely different characteristics formed during certain atmospheric situation. They are of two types cyclones and anticyclone variable winds.
(52) What is an anticyclone?
Answer: Anticyclone is the phenomenon where the strong whirl winds blow from the high pressure centres to the surrounding low pressure areas.
(53) How cyclones are formed and state their types?
Answer: Cyclones are caused by the formation of low atmospheric pressure at center surrounded by high pressure region. The strong whirl winds blow towards the low pressure centers from the surrounding of high pressure areas. Cyclones are of two types tropical cyclones are temperate cyclones.
(54) What is the classification of wind?
Answer:
- Planetary winds
(i) Trade winds
(ii) Westerlies
(iii) Polar easterlies
- Local winds
(i) Loo
(ii) Mango Showers
(iii) Kalbisakhi
(iv) Feohn
- Periodic winds
(i) Monsoon
(ii) Land and sea breezes
(iii) Mountain and valley breeze
- Variable winds
(i) Cyclones
(ii) Anticyclone
(55) What is the role of solar energy and earth’s rotation in the formation of the pressure belts?
Answer: Solar energy and earth’s rotation plays an important role in the formation of pressure belts. When the Earth rotates, due to constant movement the heat from the sun is not equally distributed on the earth and the atmosphere. This curving motion of wind is called Coriolis effects.