What Are Rain Shadows?

What is a rain shadow explain?

A rain shadow is a patch of land that has been forced to become a desert because mountain ranges blocked all plant-growing rainy weather. On one side of the mountain wet weather systems drop rain and snow. On the other side of the mountain—the rain shadow side—all that precipitation is blocked.

What causes rain shadows?

A rain shadow forms when moist winds head towards a set of mountains and get forced upwards by them. This moist air often comes from the sea or from another large body of water. That’s because where there is water that water can evaporate. The more water evaporates the more moist the air becomes.

What is an example of a rain shadow?

An example of a rain shadow is Death Valley. An area having relatively little precipitation due to the effect of a topographic barrier especially a mountain range that causes the prevailing winds to lose their moisture on the windward side causing the leeward side to be dry.

What is also called the rain shadow?

A rain shadow describes the dry area on one side of a mountain or mountain range where less rain falls. This side of the mountain or mountain range is called the leeward side while the side which has greater rainfall is called the windward side.

How does a rain shadow work?

Prevailing winds carry air toward the mountain range. As the air rises up over a mountain range the air cools water vapor condenses and clouds form. … Once the air passes over the mountain range it moves down the other side warms and dries out. This dry air produces a rain shadow.

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What is rain shadow Class 9?

A rain shadow area is an area of dry land that lies on the leeward(or downwind) side of a mountain. High mountains act as barriers for cold or hot winds they may also cause precipitation if they are high enough and lie in the path of rain-bearing winds. The leeward side of the mountains remains dry.

What are the 3 essential items needed to see a rain shadow effect?

Can it rain on one side of the street?

Yes It’s basically called a boundary between less saturated and saturated air in the upper and lower atmosphere. Their have been many instances of rain falling on one side of a street or the distance of 1 block.

What is the opposite of a rain shadow?


A rain shadow region is the leeward side which is opposite to the windward side.

What is meant by rain shadow area give two examples?

A rain shadow area is an area of dry land that lies on the leeward side of a mountain. … The leeward side of the mountains remains dry. The western ghats in India are an example of mountains causing rain shadow area.

Why are rain shadows important?

Rain shadows have an essential ecological significance just as many other natural phenomena. They can replenish new forests and allow old ones to grow. Since mountains need air and moisture the rain shadow effect can provide a warm moist that lasts long enough for the ecosystem to thrive in it.

What is rain shadow area with example?

The simple definition of rain shadow is one side of the mountain it’s all dry area because the winds lose their moisture and on the other side of the mountain is rainfall. One such example of a rain shadow region is Death valley.

Which type of rainfall occurs in rain shadow area?

Orographic rainfall

Orographic rainfall is caused when moisture carrying air is lifted upwards when it moves over a mountain. When air rises and cools it starts condensing and causes rainfall. The rainfall is heavy on the windward side and much less on the leeward side (rain shadow area). Therefore this is the correct option.

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What is meant by a rain shadow area give two examples from India?

(i) The leeward side of the hill is called ‘Rain Shadow’ area which remains dry because the winds are blocked by the hills. (ii) An example of ‘Rain Shadow’ area in India is: For Arabian Sea branch Chennai lies at leeward side of western ghats and falls under Rain Shadow area.

Is relief a rainfall?

Relief or orographic rain is formed when air is forced to cool when it rises over relief features in the landscape such as hills or mountains. As it rises it cools condenses and forms rain. The highest rainfall totals of over 1 600 mm per year occur in the mountain areas along the west coast.

Do all mountains have rain shadows?

The windward sides of mountain ranges tend to be lush and rich with vegetation because of this rainfall. However the lee sides of mountain ranges with these weather conditions are in the rain shadow and can be very dry.

What is the dry side of the mountain called?

The dry side of a mountain is known as the ‘leeward’ side. The leeward side is specifically the side opposite the prevailing wind on the mountain….

Why is rain shadow area generally dry?

The sudden ascent of warm moist air on the windward sides causes cooling of air leading to condensation and precipitation. … Consequently the relative humidity drops and there is evaporation and little or no precipitation in the rain shadow area. Hence a rain shadow area is generally dry.

What is rain shadow class7?

When moisture-laden winds blow towards the mountains they strike the windward side of the mountains and causes rainfall. When these winds blow towards the other side of the mountains they are completely devoid of any moisture and do not bring rainfall. This area is known as the rain shadow region.

Which is the rain shadow area in India?

In India along the eastern side of Sahyadri on the Deccan plateau the rain shadow zone is present e.g. The Northern Karnataka & Solapur Plateau of India Beed Osmanabad and Vidarbha.

What is cyclonic rainfall?

Cyclonic or Frontal rain: This type of rainfall occurs when warm and cold air meets each other. Since warm air is lighter it rises above the cold air. The rising air is then cooled beyond the saturation point resulting in heavy rainfall. … Rainfall is very heavy in the tropical cyclones.

What is the rainshadow effect for kids?

A rain shadow is an area of land that lies behind a mountain which gets almost no rainfall. This side of a mountainous area is away from the wind. The mountains block the passage of rain-producing weather systems and cast a “shadow” of dryness behind them.

What side of the mountain you might find on the leeward?

The opposite side of the mountain is called the leeward side and usually sees much less precipitation. The reason is that air is descending on the leeward side of the mountain and descending air is warmer and drier which is the opposite of ascending air.

What is meant by rain shadow area give an example and state the mountains responsible for the rain shadow area?

So in short absence of rain clouds in leeward side of mountains are responsible for rain shadow regions. Example: the west side of Western Ghats receive high rain from South western monsoon winds and the east side is the rain shadow region.

Rain Shadow Effect

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