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some daily life example of air exerts pressure, air expand on heating and high speed winds are accompanied by reduced air pressure.
tell me the answers of work book of science - holy faith
what are cyclones? (short answer)
explain why holes are made in hanging banners and hoardings
WHAT'S THE DIFFERENCE BETWEEN THUNDERSTORM & CYCLONE
Why does a bicycle tube burst, when overfilled?
does air exerts pressure? give an example
Why are thatched roofs of huts blown off during high winds?
Explain with the help of an activity that air exert pressure.
when you drink a soft drink with the help of a straw what forces the liquid to rise up in the straw?
write a short note on tornado.(50 words)
how cyclone is formed
We have seen kites flying in the sky and the trees moving to and fro when the wind blows.
How do kites fly in the sky? What causes the trees to move back and forth when the wind blows?
The movement of kites and the swaying of trees are caused by the pressure exerted on them by air.
What is this air pressure?
Air pressure refers to the force exerted per unit area of surface by the air that is directly above that surface.
When air blows, it exerts pressure on the face of a kite and pushes the kite up in the sky. Similarly, when the wind blows, it exerts pressure on a tree and makes it bend in the direction of the blowing air.
Let us perform an activity to understand this.
Please perform the activity under adult supervision.
Pour water into a metal can and boil over a stove keeping the can uncovered.
After boiling for 2-3 minutes, cover the can with a lid.
Using tongs, carefully place the can in the sink.
Pour cold water over it.
What do you observe? When cold water is poured over the can, it causes the can to crush.
Water vapour condenses when cooled. It has more pressure. Therefore, when cooled, the vapour condenses, reducing the pressure. This compresses the metal can. Therefore, air exerts pressure.
Let us look at some more instances where we feel the air pressure.
Cycling or rowing against the wind is difficult because of the pressure exerted by air.
The tyres of vehicles are filled with air, thereby exerting pressure. This makes it possible for them to hold and carry weight.
Let us now explore another important property of air by performing an activity.
Place a small paper ball inside the neck of a transparent bottle as shown and forcefully blow air into it.What do you observe?
It is observed that it is difficult to push the small paper ball inside the bottle by blowing.
This is because the speed of the wind is higher at the mouth of the bottle, thereby resulting in reduced air pressure near the mouth of the bottle.
On the contrary, the wind inside the bottle has a low speed and therefore, a higher pressure as compared to that at the mouth of the bottle. This higher air pressure inside the bottle prevents the paper ball from entering the bottle.
Therefore, high wind speed has low pressure and low wind speed has high pressure.
Let us perform a small experiment.
State two experiences that made you think that air exerts pressure (other than those given in the text and the answer given in meritnation) I want this answer please help. My reason why I'm not copying it from meritnation is Because my other friends are also here and they will copy from here. So I want that my answer is diffrent from others. So can any one use brain. I also but i dont have time. Hope you will help me :) :) ;)
anemometers and wind vane ars usally kept on high buildings and tower.why is that so?
WHY IS IT DIFFFICULT TO FORCE THE PAPER BALL INTO THE BOTTLE BY BLOWING INTO THE BOTTLE
define wind flow pattern
a kachcha house is more comfortable in summer than a pucca house. why?
how are thunderstorms formed? what precautions can we take during a thunderstorm?how does a thunderstorm change to a cyclone?
Suppose the earth did not rotate in which direction would the winds at the equator blow?
Name two modern technologies that help us to monitor cyclones.
why does the paper strip move upward when air is blown?
which can be hit by a cyclone mumbai or delhi or both why
why are indian coastlines prone to cyclones
would you like to buy a house having windows but no ventilators?explain
explain an activity to show that warm air is lighter than cold air with the help of two paper bags
How is a thunderstorm and cyclone formed?explain.
Write 4 properties of air
How a cyclone form and what are the disadvantages from a cyclone
please explain me that high speed winds are accompanied by reduced air pressure...??????
why is plastic harmful to us?
Why car or bus is a safe place to take shelter ?
Suppose the earth rotates from east to west , instead from west to east . How would this affect the pattern of circulation of air on the earth ?
is the movement of the earth about its axis uniform motion or non uniform?
give me example of air exert pressure.
causes and effects when the cyclone occures?
why do houses have ventilators?
what is the main difference between cyclone and tornadoes
short note on thunderstorm
How Can you show that air expands on heating?
Do you think that wind energy is a transformed form of the sun's energy? Give reason.
what r the differances between ,cyclone,tornadoes and tsunami?....
where do you expect the pressure to be high?at the equator or at the poles?why?
what are difference between cyclone and tornado
What are the factors that contribute to the formation of cyclones?
why does a cyclonic storm die after reaching land and not become more active?
Q1 suggest two methods to find out wind direction at a given place.
Q2 explain why holes are made in hanging banners and hoardings.
Q3 give two examples of the fact that air exerts pressure.
Explain why holes are made in hanging banners and hoardings? (plz answer fast)
show any activityto prove that high speed wind is accompanied by reduced air pressure
plz answer these questions :- 1.what is convection currents?
2.the speed of wind in a region suddenly increases.How does this affect the pressure in this region? 3.name any 5 factors helping growth of cyclone
What is the low- pressure centreof a cyclone called?
How are earthquakes caused?
Q1 how will u help your neighbours in case cyclone approaches your village/town?
Q2 what planing is required in advance to deal with the situation created by the cyclone?
Q3 how does modern technology help us to predict cyclones in advance?
Q4 what do u understand by the eye of the cyclone?
what would happen if high speed winds blow over a house having weak tin roof ? give reasons for this answer.
Q1 how is storm formed?
Q2 describe the kind of destruction that a storm can cause.
Q3 list out a few safety measures that should be taken durin a storm.
please prepare a report on the major wind patterns on the earth and find out their importance.
how does thunderstorm become cyclone?
Explain with a experiment that moving air provides a lift
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