Insights Static Quiz -391, 2019–Geography

Solution: c)

• IMD brands the monsoon as ‘normal’ or ‘deficient’ based on how it fares against its benchmark Long Period Average (LPA).
• LPA is the average rainfall received by the country as a whole during the south-west monsoon, for a 50-year period. The current LPA is 89 cm, based on the average rainfall over years 1951 and 2000. This acts as a benchmark against which the rainfall in any monsoon season is measured.
• The country is said to have received deficient rainfall if the actual rainfall falls below 90 per cent of LPA. Similarly, the country is said to have received excess rainfall if the rainfall is greater than 110 per cent of LPA. It is deemed ‘normal’ when the actual rainfall received falls between 96 and 104 per cent of LPA.
• A 50-year average is expected to smooth out the day-to-day, month-to-month variations, while also accounting for freak weather events like the El Nino and La Nina.
• Like the countrywide figure, IMD maintains an independent LPA for every homogeneous region of the country, which ranges from 71.6 cm to 143.83 cm. The region-wise LPA figures are: 143.83 cm for East and Northeast India, 97.55 cm for Central India, 71.61 cm for South Peninsular India, and 61.50 for Northwest India, which put together bring the all-India figure to 88.75 cm.

Source

Solution: b)

Devaprayag – Confluence of Alaknanda and Bhagirathi

Vishnuprayag – Confluence of Alaknanda and Dhauliganga

Rudraprayag –   Confluence of Alaknanda and Mandakini

Karanprayag – Confluence of Alaknanda and Pindar

Solution: b)

An aurora, sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth’s sky, predominantly seen in the high latitude regions (around the Arctic and Antarctic).

Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind. It usually occur in upper atmosphere (thermosphere/exosphere) due to Earth’s magnetic field.

Solution: d)

This type of climate is found on the eastern margins of continents in warm temperate latitudes, just outside the tropics. It has comparatively more rainfall than the Mediterranean climate in the same latitudes, coming mainly in the summer. It is, in fact, the climate of most parts of China –a modified form of monsoonal climate. It is thus also called the Temperate Monsoon or China Type of climate.

Climatic Condition: Warm moist summer and a cool, dry winter. The mean monthly temperature varies between 5°C and 25°C and is strongly modified by maritime influence. The relative humidity is a little high in mid-summer. Rainfall is more than moderate, anything from 25 inches to 60 inches. Another important feature is the fairly uniform distribution of rainfall throughout the year. There is rain every month, except in the interior of central China, where there is a distinct dry season.

Solution: d)

The ocean water is dynamic. Its physical characteristics like temperature, salinity, density and the external forces like of the sun, moon and the winds influence the movement of ocean water.