When Elevated Terrain Such As A Mountain Range Causes Air To Rise, This Is Called ________.


When elevated terrain such as a mountain range causes air to rise this is called what?

Orographic lifting

Air masses are typically at least 1 000 miles (1 600 km) wide and several miles thick. Orographic lifting: This phenomenon occurs when an airflow encounters elevated terrains such as mountain ranges. Like a speeding car heading toward a hill the wind simply powers up the slope.

What happens when warm air is forced up and over a mass of cooler air?

All fronts slope in the vertical so that the warmer (less dense) air mass sits on top of the colder (more dense) air mass. In other words the warmer air mass is forced to rise over the colder air mass. As air from the warm air mass rises it cools leading to the development of clouds and maybe precipitation.

How can condensation be triggered to form clouds or fog?

How can condensation be triggered to form clouds or fog? Cool the air to its dew point. Add sufficient water vapor to the air so that it reaches saturation. … When warm moist air moves over a cold surface ________ fog may result.

What occurs near Earth’s surface around an anticyclone?

Deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. A high-pressure center characterized by a clockwise flow of air in the Northern Hemisphere. … of air occurs near Earth’s surface around an anticyclone.

What happens when air rises over a mountain?

As air rises over a mountain it cools and loses moisture then warms by compression on the leeward side. The resulting warm and dry winds are Chinook winds. The leeward side of the mountain experiences rainshadow effect.

How does condensation happen?

It can happen in one of two ways. For condensation to form water vapor is either cooled to its dew point – which is the temperature at which water in the air condenses to create water droplets. Or the air becomes so saturated with water vapor that it can’t hold any more water.

Do mountains cause air to rise?

When wind blows across a mountain range air rises and cools and clouds can form. … The side of the mountains where the wind leaves the area is called the leeward side. Another way that mountains cause cloud formation is when air rises because the mountain is warmer than the surrounding air and causes the air to rise.

What causes air to rise high into the atmosphere?

The most powerful force which causes air to rise and cool is the Sun. When the Sun heats the surface of the Earth warming of the air above the ground takes place. This warm air rises and cools as it goes higher. At a certain point condensation will occur and clouds will form.

What causes air masses to rise?

Winds and air currents cause air masses to move. Moving air masses cause changes in the weather. A front forms at the boundary between two air masses. Types of fronts include cold warm occluded and stationary fronts.

What is condensation explain briefly the process of condensation?

Condensation is the process by which water vapor in the air is changed into liquid water. … As condensation occurs and liquid water forms from the vapor the water molecules become more organized and heat is released into the atmosphere as a result.

What happens when air containing water vapor rises?

As water vapor rises higher in the atmosphere it begins to cool back down. When it is cool enough the water vapor condenses and returns to liquid water. These water droplets eventually gather to form clouds and precipitation.

What role do condensation nuclei play in the formation of clouds?

The formation of clouds fog or haze requires the assistance of condensation nuclei. Condensation nuclei provide the non-gaseous surface necessary for water vapor to condense into cloud droplets. As droplets join together they grow larger and eventually fall as precipitation.

What causes an anticyclone?

In an anticyclone winds move out from a high-pressure area with wind direction clockwise in the northern hemisphere anti-clockwise in the southern hemisphere. … When it displaces the heavier nitrogen and oxygen it causes an anti-cyclone.

What are cyclones anticyclones?

A cyclone is a storm or system of winds that rotates around a center of low atmospheric pressure. An anticyclone is a system of winds that rotates around a center of high atmospheric pressure. … Winds in an anticyclone blow just the opposite. Vertical air movements are associated with both cyclones and anticyclones.

What causes cyclones and anticyclones?

The development of anticyclones aloft occurs in warm core cyclones such as tropical cyclones when latent heat caused by the formation of clouds is released aloft increasing the air temperature the resultant thickness of the atmospheric layer increases high pressure aloft which evacuates their outflow.

See also What Is Orbital Plane?

What happens to the surrounding air when warm air rises?

As air warms up the molecules start to vibrate and bump into each other increasing the space around each molecule. Because each molecule uses more space for motion the air expands and becomes less dense (lighter).

How does wind flow over mountains?

Where it reaches the ground it creates a high pressure zone. Air flowing from areas of high pressure to low pressure creates winds. Warm air can hold more moisture than cold air. Air moving at the bases of the three major convection cells in each hemisphere north and south of the equator creates the global wind belts.

What is happening to the air that is rising on the windward side of the mountain range?

As winds rise up the windward side of a mountain range the air cools and precipitation falls. On the other side of the range the leeward side the air is dry and it sinks. So there is very little precipitation on the leeward side of a mountain range.

What is condensation short answer?

Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation where liquid water becomes a vapor. Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water.

Where does condensation occur quizlet?

the conversion of water from a gas into a liquid” It said how condensation occurs. It said ” Condensation generally occurs in the atmosphere when warm air rises cools and looses its capacity to hold water vapor. ” So that is how condensation occurs. It occurs by the atmosphere.

How do you increase condensation?

Making water vapor colder increases the rate of condensation. Increasing the concentration of water vapor in the air increases the rate of condensation.

How air rising over a mountain produces precipitation?

Mountains can have a significant effect on rainfall. When air reaches the mountains it is forced to rise over this barrier. As the air moves up the windward side of a mountain it cools and the volume decreases. As a result humidity increases and orographic clouds and precipitation can develop.

See also which of the following could result when warm moist air meets cold dry air over land?

How does a mountain range affect climate?

What effect do mountains have on surrounding land? Mountains can affect the climate of nearby lands. In some areas mountains block rain so that one side of a mountain range may be rainy and the other side may be a desert. Much of airborne moisture falls as rain on the windward side of mountains.

When air is lifted by the earth’s terrain this is called?

Formally the forced lifting of air by the terrain is called orographic lifting although meteorologists sometimes describe this ascent as an upslope flow of air (“upslope flow” or “upsloping winds” for short).

What does convective lifting mean?

Convective lifting is air rising due to positive buoyancy similar to the process of how a helium balloon rises quickly into the air since the air in the balloon is less dense than the surrounding air. This mechanism of rising air is very quick.

What makes air expand and rise above the ground surface?

Solar heating of the Earth’s surface is uneven because land heats faster than water and this causes air to warm expand and rise over land while it cools and sinks over the cooler water surfaces.

What causes atmospheric circulation?

Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. … This pattern called atmospheric circulation is caused because the Sun heats the Earth more at the equator than at the poles. It’s also affected by the spin of the Earth. In the tropics near the equator warm air rises.

See also how long is lake pontchartrain causeway

What is it called when air masses meet?

When two different air masses come into contact they don’t mix. They push against each other along a line called a front. When a warm air mass meets a cold air mass the warm air rises since it is lighter. At high altitude it cools and the water vapor it contains condenses. This type of front is called a warm front.

What causes air mass movements quizlet?

Air masses are formed by uneven heating and cooling of the Earth by the sun. This causes pressure differences in different areas of the globe. The movement of air masses is just the flow of high pressure air masses to low pressure areas. … If the warm air is moist clouds will form.

What are air masses in geography?

An air mass is a large volume of air in the atmosphere that is mostly uniform in temperature and moisture. Air masses can extend thousands of kilometers in any direction and can reach from ground level to the stratosphere—16 kilometers (10 miles) into the atmosphere.

WebAssign Chapter 2 – projectile motion

How do ocean currents work? – Jennifer Verduin

Leave a Comment