Rachna Sapra solutions for Geography [English] Class 9 ICSE chapter 12 - Insolation [Latest edition]

Earth receives 1 part out of ______ parts of solar radiation.

The energy given out by the Sun in the solar system is called ______.

The solar energy which reaches the Earth is ______.

The ______ % of insolation is absorbed by the atmosphere.

In the absence of atmosphere:

Which of the following does not form part of Albedo?

The process of heating, which takes place when the bodies are in physical contact with each other is called ______.

1 calorie per gram per 1°C is the specific heat of ______.

Choose the incorrect statement.

During which period of the day the Sun’s rays make the highest angle of incidence?

Which of the following heat zones receives the smallest solar footprint?

In which of the following heat zones there are long periods when the Sun rays are not received at all?

The phenomena of inversion of temperature takes place in ______.

Kanpur is hotter than Mumbai due to the ______.

Which type of soil absorbs the maximum insolation?

Assertion (A): Forests are much cooler than deserts.

Reason (R): Vegetation reflects back the insolation.

Assertion (A): Coastal places experience moderate temperatures.

Reason (R): Coastal places experience land and sea breezes.

Assertion (A): The process of conduction heats up the lower layers of the atmosphere.

Reason (R): The lower layers of the atmosphere are in contact with the land.

Assertion (A): Cloudy days are cool, while the cloudy nights are cooler.

Reason (R): Clouds trap the heat.

Assertion (A): The temperature decreases with increasing altitude.

Reason (R): The lower layers of the atmosphere are denser due to the presence of CO₂ and water vapour.

Read the graph to answer the following questions.

1. Which type of climate experiences a constantly high temperature?
2. Which type of climate experiences the lowest range of temperature?
3. Which type of climate experiences the highest range of temperature?

1. At what time of the day is the highest temperature recorded?
2. At what time of the day is the maximum insolation received?
3. The two time records are not the same. Explain the reason for the difference.

What is the major source of atmospheric heat?

Define conduction.

Define the following term:

Torrid zone

What is the location of the frigid zone in the Northern Hemisphere?

What do you mean by insolation?

Give two points of importance of insolation.

Explain the term heat budget.

Explain the term albedo.

Name the three processes by which the Earth’s atmosphere is heated.

Define the term isotherm.

Define the term Normal Lapse Rate.

Explain the role of the nature of soil in determining the temperature of a place.

Name the instrument used to measure the atmospheric temperature.

Why deserts have higher range of temperature than the coastal areas?

What is a maritime climate?

Give one example of a maritime climate.

What do you mean by the diurnal range of temperature?

Between the cities of Mumbai and Jaisalmer, which place will have a higher diurnal range of temperature? Why?

What is a continental type of climate?

Give one example of a continental type of climate from India.

What is the local wind ‘Loo’?

In which season and parts of India does ‘Loo’ blow?

Why are the south-facing slopes in the Northern Hemisphere warmer than the north-facing slopes?

Although the Earth constantly receives huge solar radiation, yet temperatures remain moderate in most parts of the world. Give geographical reasons.

Why the Earth does not receive 100% of the Insolation?

How does the Earth maintain its heat budget?

Explain the role of ocean currents in modifying the climate of a place.

Nainital and Delhi are almost at the same latitude, yet there is a lot of difference in their climate. Give reasons.

Why are the oceans comparatively cooler than the land? Give a reason.

Imagine and discuss what will be the climate of India if there were no Himalayas.

How do the winds modify the temperature of a place?

What is the inversion of temperature?

Under what conditions does the inversion of temperature apply?

List out the various factors influencing the temperature of a place.

Why are the slanting rays less effective than the vertical rays in heating up the atmosphere?

What is meant by ‘normal lapse rate’?

Give the Normal Lapse Rate value.

Give reasons why coastal climates are equable.

Study the given diagram and tell which of the two places (A and B) will record higher temperatures. Give reasons to support your answer.