Atmosphere Weather and Climate - Class 7 Social Science - Chapter 12 - Notes, NCERT Solutions & Extra Questions
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Back Questions - Atmosphere Weather and Climate | Social Science Success | Social Science | Class 7
The layer of atmosphere lying between 50 to $80 \mathrm{~km}$ is called ___________________
(a) Stratosphere
(b) Thermosphere
(c) Mesosphere
(d) Exosphere
Mesosphere
Answer: (c) Mesosphere
Which is not an element to determine the weather and climate of a place?
(a) Oceans
(b) Wind
(c) Temperature
(d) Rainfall
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The zone of maximum insolation is the
(a) North Temperature zone
(b) Torrid zone
(c) South Temperature zone
(d) Frigid zone
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The subtropical high pressure belt is also known as
(a) Doldrums
(b) Horse latitude
(c) Tropic of cancer
(d) Tropic of Capricorn
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Prevailing winds are also known as
(a) Seasonal winds
(b) Local winds
(c) Monsoon winds
(d) Planetary winds
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________________ the most abundant gas, contributes to soil fertility and the growth of plants and animals.
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) None of these
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During the photosynthesis process, green plants produce:
(a) Oxygen
(b) Water
(c) Carbon dioxide
(d) Food
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__________________ is one of the greenhouse gases that traps the heat energy emitted by the sun as it radiates from the Earth.
(a) Carbon dioxide
(b) Helium
(c) Nitrogen
(d) CFC
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Which is the warmest layer of the atmosphere?
(a) Thermosphere
(b) Troposphere
(c) Stratosphere
(d) Mesosphere
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Which of the following gases absorbs ultraviolet rays?
(a) Carbon dioxide
(b) Neon
(c) Ozone
(d) Nitrogen
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Which zone separates the troposphere from the stratosphere?
(a) Mesospause
(b) Tropopause
(c) Ionospause
(d) Stratopause
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Match the following
Column A | Column B |
---|---|
1. Instrument for measuring atmospheric pressure | (a) Latitude |
2. Instrument for measuring wind speed | (b) Curmulus |
3. Important factor influencing temperature | (c) Anemometer |
4. Clouds like heap of cotton | (d) Barometer |
5. Moving currents of air | (e) Wind |
Which type of gases act like a heat blanket in the atmosphere?
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In which part of the atmosphere air is densest?
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What is insolation?
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What are easterly winds?
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What causes rapid evaporation?
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What are seasonal winds?
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Why does the temperature decrease with increase in altitude? Give reasons.
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State the importance of "Thermosphere".
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What is convectional rainfall?
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State the composition of atmosphere.
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Describe temperature as an element of weather and climate.
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Increase in the amount of carbon dioxide in the air has caused the temperature of the earth to rise, leading to 'Global warming'. What steps we should take to reduce the harmful effects of it.
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What is meant by atmospheric pressure? Which factor determines the horizontal distribution of pressure?
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Write a short note on humidity and precipitation.
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Explain the three types of winds briefly.
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In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option.
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A). (b) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
(c) Assertion (A) is true but Reason (R) is false.
(d) Assertion (A) is false but Reason (R) is true.
1. Assertion (A): The atmosphere is critical to maintaining the earth's heat balance.
Reason (R): The atmosphere absorbs a portion of the sun's electromagnetic radiation while transmitting near UV, visible, and near IR radiation.
2. Assertion (A): As altitude increases, so does the temperature in the stratosphere.
Reason (R): The presence of ozone absorbs ultraviolet radiation, which is then converted into heat.
3. Assertion (A): Rainfall occurs all year in areas near the equator.
Reason $(R)$ : In most afternoons near the equator, high temperatures and high humidity cause conventional rain.
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Notes - Atmosphere Weather and Climate | Class 7 Social Science Success | Social Science
Comprehensive Notes on Atmosphere, Weather, and Climate for Class 7 Students
Understanding the Atmosphere
Importance of the Atmosphere
The atmosphere is a major domain of Earth that surrounds it with a thin envelope of air extending about 700 km into space. This layer of gases is held around our planet by gravity. The atmosphere is crucial for the survival of life on Earth. It protects us from harmful ultraviolet rays from the sun, maintains temperature by trapping heat, and contains essential gases that support life.
Composition of the Atmosphere
The Earth's atmosphere is a mixture of...
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