Land and sea breeze – Must know points

Land and sea breeze – Must know points
Land and sea breeze - formation of sea breeze

We will discuss here the land and sea breeze. Also, we will understand the key factors related to these breezes, formation, and difference between these two breezes.

The breeze is a natural and light air movement in a particular direction. There are mainly two types of breezes- Land and Sea breeze. A breeze is named according to the place it has been originated. 

The land breeze means a breeze from land to sea. Similarly, the sea breeze means a breeze from sea to land.

Land and Sea breeze: Key Factors

Land and sea breeze

We will first understand the three key factors contributing to the formation of land and sea breezes.

The physical properties of the Land and Water

The land consisting of sand and stones has a tendency to cool down and heat up in a lesser span of time than water. The land heats up quickly at day time. Similarly, it cools down quickly at night. 

The physical property of land and water plays a vital role in the formation of the breeze. 

Temperature difference (TD)

The physical property of land and water creates a temperature difference between the air above the land and the sea.

In the day time, the land heats up quickly, the temperature of the air above the land also increases. In the night, the land cools up quickly, and the temperature of the air above the land also decreases. 

The temperature of the air above the sea remains at a moderate temperature during the day as well as the night time.

Pressure difference (PD)

The molecules of the hot air are at a larger distance than the molecules of the cold air. So, the density of the hot air is lesser than that of cold air. Colder the temperature, denser the air.

This creates a pressure difference between the zones above land and sea. The air starts moving from a high-pressure zone to the low-pressure zone.

The hot air has a tendency to rise up into the atmosphere. Any object expands on heating. This expansion decreases the density of that object. So, a less dense object starts floating over the more dense object.

The difference between the temperature and pressure not only gives rise to the formation of the land and sea breeze but it also leads to the formation of the clouds and rain.

Now let us understand the formation of breezes with the help of these key factors.

Formation of Land and Sea breeze

Land Breeze

Land Breeze - Land and sea breeze

The land areas of the earth cool down quickly during night time. The temperature of the air above the land also decreases.

Thus, a zone of high pressure develops over the land. Whereas, the air above the sea is hotter and warmer. And, a low-pressure zone develops over the sea.

Recall that, the air flows from the high-pressure zone to the low-pressure zone. Hence during the night, the air flows from land to sea. This gives rise to the formation of the land breeze.

Sea Breeze

Land and sea breeze - formation of sea breeze

The land areas of the earth heat up quickly during day time. The temperature of the air above the land areas also increases. And, the temperature of the air above the sea remains moderate.  

This creates two different temperature and pressure zones (TD and PD). Again, the air starts moving from the high-pressure zone to the low-pressure zone.

The pressure zones have been reversed now. During the day time, the zone over the land is low-pressure and the zone over the sea is high pressure. So the air starts flowing from the sea to the land. This is how the Sea breeze forms.

The higher the temperature difference higher will be the speed of the breeze.

We can figure out the difference between land and sea breeze from the point of view of the origination, speed, and moisture.

Difference between breeze and wind

 

 
BreezeWind

1. Light and smooth movement of air.

2. We can not hear the movement of a breeze.

3. There are normally four types of breezes. land, sea, mountain and valley breezes.

1. Fast and harsh movement of air.

2. The movement of wind can be heard.

3. There are mainly five types of winds. Planetary, trade, the westerlies, local and periodic winds.  

Are you ready now to answer some of the very common questions related to the “land and sea breeze/ wind”? Let’s have fun. You can check the answer at any time by clicking on the questions.

Question and Answers related Land and Sea Breeze

Any object moving with some speed has kinetic energy. The same is the case with the moving wind also. The moving wind has powers due to its motion, this is called wind power.

The sun is the biggest source of all the energies present on the earth. Wind energy is also a form of solar energy. The sun rays fall onto the land and water bodies.  The winds are originated by the difference between the temperatures of the land and sea areas.

The flowing wind exerts pressure on the blades of a windmill and the blades start rotating. This rotation produces wind power which can be utilized in many ways like grinding grains, rotating water pumps, and generating electricity by rotating generators.

A windmill is an equipment that converts the kinetic energy of the wind into mechanical energy. The mechanical energy further converted into electrical energy by the generators.

The kinetic energy of the wind exerts pressure on the blades of the windmill. The blades start rotating. The rotating blades are linked with a generator. The generator also starts rotating and converts the mechanical energy into electrical energy.

Detection of the direction of the windThere are many ways in which the direction of the wind can be determined.

One of them is hanging windsocks. Windsocks has two different areas for wind resistance. The wider area and the narrower area. The resistance by the wind is more on the wider area which turns into the direction of the wind. Thus the direction can be detected. 

To know the direction of the wind is very important for placing windmills, parasailing, flying kites, and during the water transportation.

 

I hope you enjoy reading this tutorial. Comment below for any query, question or suggestion.

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