What is an isotherm and what is the purpose of isotherms quizlet?
An isotherm is a line of connecting points of equal temperatures. They are used to observe the distribution of air temperatures over a vast area. … The clouds cover the amount of solar radiation that comes in, which will affect the daytime temperatures.
Why do isotherms shift most over land or water explain?
On land, during this season atmospheric gases becomes dense and their motion becomes less due to their coolness. … Hence to acquire the temperature equivalent to the oceans isotherm line of land deviate alot towards the equater or to acquire equivalent temperature like hot ocean.
Why do the isotherms bend poleward in the Northern Hemisphere in July?
Because of predominance of land over water in the north, the northern hemisphere is warmer. The thermal equator (ITCZ) lies generally to the north of geographical equator. While passing through an area with warm ocean currents, the isotherms show a poleward shift.
Why does the entire pattern of isotherms shift northward from the January map to the July map?
o Winter temperatures are lower over the continents than over the oceans; the isotherms bend equatorward over continents in the Southern Hemisphere). … The isotherms follow the changing balance of insolation during the course of the year, moving northward from January to July returning southward from July to January.
Does the coldest temperature generally occur over continent or ocean?
Land and Water Distribution
Air temperatures are warmer in summer and colder in winter over the continents than they are over the oceans at the same latitude. This is because landmasses heat and cool more rapidly than bodies of water do.
Where do isotherms run east to west?
A graph of average January air temperature near the surface of the earth (see Figure 5) shows lines of constant temperature, called isotherms, generally follow the lines of constant latitude running east-west, particularly in the Southern Hemisphere.
Which is the main factor influencing the distribution of temperature?
Latitude is the main factor influencing the distribution of temperature on the Earth.
Where is the annual range of temperature usually greatest?
The greatest recorded temperature ranges in the world are around the Siberian `cold pole’ in the east of Russia.
Why does the temperature increase in the stratosphere?
4.3.
The increased temperature in this layer is due mainly to UV absorption by various chemical species, including ozone and molecular oxygen present in the stratosphere. Maximum heating takes place in the upper part of the stratosphere. Because of the stable air, pollutant mixing is suppressed within this layer.
What temperature pattern do the isotherms show?
Isothermal maps clearly show centers of high or low temperatures. They also illustrate the directions along which temperature changes, which are known as temperature gradients. In the winter, isotherms dip equatorward while in the summer, they arch poleward (Figure 3.22).
Why do temperatures increase in the stratosphere quizlet?
The temperature increases with increasing altitude in the stratosphere because there’s a high concentration of ozone molecules. These ozone molecules absorb UV rays from the Sun and then radiates this energy in the form of infrared waves. Nearby gases can absorb this infrared energy and increase in temperature.
Why do isotherms move?
Large landmasses in the Northern hemisphere cause isotherms to bend toward the equator in winter and poles in summer as they change their temperature much more than the water. … Thus they shift north and south much more over land through the year than they do over water.
Why are the isotherms more irregular in the northern hemisphere than the Southern Hemisphere?
C. Compare the global distribution of temperature in January over the Northern and Southern Hemisphere of the earth. The temperature distribution is generally shown on the map with the help of isotherms, the lines joining places having equal temperature. The isotherms are generally parallel to the latitude.
Why is the isotherms generally curved in the northern hemisphere?
The bending of isotherms is due to the differential heating of land and water. … Thus, isotherms in the Northern Hemisphere are more curved while those in the Southern Hemisphere are almost parallel to the Equator showing almost no differential heating of land and water.
What does the direction of parallel isotherm lines indicate?
Isotherms are always smooth, labeled with the values, and mostly parallel to each other. … The relative spacing of the isotherms indicates the temperature gradient, the amount by which the temperature values vary across each unit of horizontal distance, in a direction perpendicular to the isotherms.
Why are isotherms important?
For the adsorption process, an analysis of the isotherm data is important because the isotherms describe equilibrium relationships between adsorbent and adsorbate, usually the ratio between the quantity adsorbed and that remaining in the solution at a fixed temperature at equilibrium.
Why is an isotherm used in a weather map?
Isotherms are lines of constant or equal temperature. They are often used on weather maps by meteorologists to give a large scale view of temperatures across the U.S. If you have ever looked at a weather map in a newspaper, the isotherms are used to divide the color-filled temperatures.What are isotherms quizlet?
A line on a map connecting points having the same temperature at a given time/on average of a given period.
Which correctly describes the cause and resulting weather conditions in North America from an El Niño year?
Which correctly describes the cause and resulting weather conditions in North America from an El Niño year? Warm waters in the eastern Pacific lead to warmer-than-usual temperatures in the northern US and Canada and cooler, wet conditions in the southern US.
How does a major La Niña event influence the hurricane season in the North Atlantic?
How does a major La Niña event influence the hurricane season in the Atlantic Ocean? It increases hurricane activity.
Why in January isotherms deviate to the north over Ocean and South over Continent?
In January, the isotherms deviate to the north over the ocean and to the south over the continents. … The presence of warm ocean current, Gulf stream and North Atlantic drift make the North Atlantic ocean warmer and the isotherms bend towards the north.
Why the maximum and minimum temperature are being recorded at 2 pm and just before sunrise respectively?
The maximum intensity of the sun’s rays is at 12 noon. But the maximum temperature of the atmosphere is felt at about 2 in the afternoon because it takes about two hours to heat the atmosphere by the terrestrial radiation. … The minimum temperature of a day is recorded at 5 in the morning (just before sunrise).
What is the role of temperature in bringing water content to the atmosphere?
Explanation: As the temperature of the atmosphere rises, more water is evaporated from ground storage (rivers, oceans, reservoirs, soil). Because the air is warmer, the relative humidity can be higher (in essence, the air is able to ‘hold’ more water when its warmer), leading to more water vapor in the atmosphere.
