# Test: Solar Radiation, Heat Balance And Temperature

## 10 Questions MCQ Test NCERT Textbooks (Class 6 to Class 12) | Test: Solar Radiation, Heat Balance And Temperature

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Attempt Test: Solar Radiation, Heat Balance And Temperature | 10 questions in 10 minutes | Mock test for UPSC preparation | Free important questions MCQ to study NCERT Textbooks (Class 6 to Class 12) for UPSC Exam | Download free PDF with solutions
QUESTION: 1

### Higher latitudes are not permanently frozen because of

Solution:

There is a surplus of net radiation balance between 40 degrees north and south and the regions near the poles have a deficit. The surplus heat energy from the tropics is redistributed pole wards and as a result the tropics do not get progressively heated up due to the accumulation of excess heat or the high latitudes get permanently frozen due to excess deficit.

QUESTION: 2

### The heat energy absorbed by a known area in a fixed time is determined with the help of an instrument called

Solution:

The effects of absorption by the atmosphere are eliminated by finding the value of the solar constant at various altitudes of the sun on the same day.

QUESTION: 3

### The earth radiates energy to the atmosphere in:

Solution:

This energy heats up the atmosphere from below.

QUESTION: 4

In which one of the following cities, are the days the longest in Summar?

Solution:

In summer (March to September), in the northern hemisphere, as we move northwards, the length of the day increases. But in winter (September to March) the length of the night increases as we move northwards. since Chandigarh is northernmost among the options

QUESTION: 5

Insolation refers to ________

Solution:

The energy received by the earth is known as incoming solar radiation, which in short is termed as insolation.

QUESTION: 6

The envelop of the air is called _________

Solution:

Atmosphere is a mixture of different gases and it envelopes the earth all round. It contains life-giving gases like oxygen for humans and animals and carbon dioxide for plants.

QUESTION: 7

Differences in pressure on the earth surface causes:

Solution:

Pressure differences cause winds.

QUESTION: 8

The sun is vertically over head at noon on 21st June at

Solution:

The sun can be directly overhead on June 21st when it is at the Tropic of Cancer, which is 23.5 degrees north of the equator. Similarly, the sun is only directly overhead at the winters solstice for locations on the Tropic of Capricorn, 23.5 degrees south of the equator. On the euqinoxes, both spring and autumn, the sun is only directly overhead at the equator.

QUESTION: 9

Maximum insolation is received over the ____________

Solution:

Sub-tropical deserts receive maximum amount of insolation because cloudiness is the least there.

QUESTION: 10

What is Isotherm?

Solution:

Isotherms are the lines joining places of equal temperature.

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