Which of the following pairs of Isolines and its properties are correctly matched? 1. Isonif : Snowfall 2. Isohel : Sunshine 3. Isohaline : Salinity 4. Isohypse : Cloudiness Select the correct answer using the code given below:
1, 2 and 3
Isolines are lines on a map or chart that connect points having the same value for a specific property. They are widely used in various fields like geography, meteorology, and oceanography to represent spatial distribution.
Analyzing Isolines and Their Properties
Let's examine each pair of isoline and its associated property listed in the question to determine if they are correctly matched.
Isonif and Snowfall
The term "Isonif" comes from "iso-" meaning equal and "nif" related to snow. An isonif is a line drawn on a map joining points that receive the same amount of snowfall over a specific period. Therefore, this pair is correctly matched.
Isohel and Sunshine
The term "Isohel" comes from "iso-" meaning equal and "hel" related to the sun (like Helios). An isohel is a line drawn on a map connecting points that receive the same amount of sunshine duration over a specific period. This pair is also correctly matched.
Isohaline and Salinity
The term "Isohaline" comes from "iso-" meaning equal and "haline" related to salt or salinity. An isohaline is a line drawn on a map joining points of equal salinity in a body of water, such as an ocean, sea, or lake. This pair is correctly matched as well.
Isohypse and Cloudiness
The term "Isohypse" comes from "iso-" meaning equal and "hypse" related to height or elevation. An isohypse is a line drawn on a map joining points of equal elevation above a given reference level, often sea level. These lines are commonly known as contour lines. Cloudiness is typically represented by an isoneph, which connects points of equal cloud cover. Therefore, the pair "Isohypse : Cloudiness" is incorrectly matched.
Identifying Correct Isolines Pairs
Based on the analysis:
- Pair 1 (Isonif : Snowfall) is correct.
- Pair 2 (Isohel : Sunshine) is correct.
- Pair 3 (Isohaline : Salinity) is correct.
- Pair 4 (Isohypse : Cloudiness) is incorrect.
The correctly matched pairs are 1, 2, and 3.
Selecting the Correct Option
The question asks to select the correct answer using the code provided, based on the correctly matched pairs. We identified that pairs 1, 2, and 3 are correct. Looking at the options:
- Option 1 states 1, 2 and 3.
- Option 2 states 2, 3 and 4.
- Option 3 states 1 and 3 only.
- Option 4 states 1, 2 and 4.
Option 1 lists the exact set of correctly matched pairs (1, 2, and 3).
Revision Table: Key Isolines and Properties
| Isoline | Property Represented |
|---|---|
| Isobar | Atmospheric Pressure |
| Isotherm | Temperature |
| Isohyet | Rainfall/Precipitation |
| Isonif | Snowfall |
| Isohel | Sunshine Duration |
| Isohaline | Salinity |
| Isohypse (Contour) | Elevation/Altitude |
| Isoneph | Cloudiness |
| Isotach | Wind Speed |
| Isodrosotherm | Dew Point Temperature |
Additional Information: More About Isolines
Isolines are fundamental tools in mapping and visualizing spatial data. They help us understand the distribution patterns of various phenomena across an area. For example, isobars on a weather map show areas of high and low pressure, helping predict wind patterns. Isotherms show temperature distribution, which is crucial for climate studies and weather forecasting. Contour lines (isohypses) are essential for understanding topography and are used extensively in hiking, engineering, and urban planning. Each type of isoline is named based on the property it represents, often using Greek root words combined with "iso-" meaning equal.
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