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The EM wave emitted by theSun and respon...

The EM wave emitted by theSun and responsible for heating the Earth's atmosphare due to green house effect is

A

Infra-red radiation

B

X-ray

C

Microwave

D

Visible light

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Carbon cycle: Which gas has green house effect as compared to CO_2 ?

Read the paragraph and answer the questions given below : Our atmosphere is getting hotter. more turbulent, and more unpredictable because of the “boiling and churning” effect caused by the heat-trapping greenhouse gases within the upper layers of atmosphere. With increase of carbon, methane, or other greenhouse gas levels in the atmosphere, our local weather and global climate is further agitated, heated, and “boiled”. The green house gases such as water vapour, carbon dioxide, methane, nitrous oxide, and ozone are causing great impact on life on earth. Due to global warming, the glaciers are melting, causing sea level rise, coastal submergence and frequent natural disasters. We have to rethink while taking the development projects and help to protect the existing life forms on the earth before its too late because climate change can exterminate us. Which are main green house gases?

Read the paragraph and answer the questions given below : Our atmosphere is getting hotter. more turbulent, and more unpredictable because of the “boiling and churning” effect caused by the heat-trapping greenhouse gases within the upper layers of atmosphere. With increase of carbon, methane, or other greenhouse gas levels in the atmosphere, our local weather and global climate is further agitated, heated, and “boiled”. The green house gases such as water vapour, carbon dioxide, methane, nitrous oxide, and ozone are causing great impact on life on earth. Due to global warming, the glaciers are melting, causing sea level rise, coastal submergence and frequent natural disasters. We have to rethink while taking the development projects and help to protect the existing life forms on the earth before its too late because climate change can exterminate us. Why is life threatened on the earth due to global warming?

Read the paragraph and answer the questions given below : Our atmosphere is getting hotter. more turbulent, and more unpredictable because of the “boiling and churning” effect caused by the heat-trapping greenhouse gases within the upper layers of atmosphere. With increase of carbon, methane, or other greenhouse gas levels in the atmosphere, our local weather and global climate is further agitated, heated, and “boiled”. The green house gases such as water vapour, carbon dioxide, methane, nitrous oxide, and ozone are causing great impact on life on earth. Due to global warming, the glaciers are melting, causing sea level rise, coastal submergence and frequent natural disasters. We have to rethink while taking the development projects and help to protect the existing life forms on the earth before its too late because climate change can exterminate us. What can we do to reverse effects climate change?

Read the paragraph and answer the questions given below : Our atmosphere is getting hotter. more turbulent, and more unpredictable because of the “boiling and churning” effect caused by the heat-trapping greenhouse gases within the upper layers of atmosphere. With increase of carbon, methane, or other greenhouse gas levels in the atmosphere, our local weather and global climate is further agitated, heated, and “boiled”. The green house gases such as water vapour, carbon dioxide, methane, nitrous oxide, and ozone are causing great impact on life on earth. Due to global warming, the glaciers are melting, causing sea level rise, coastal submergence and frequent natural disasters. We have to rethink while taking the development projects and help to protect the existing life forms on the earth before its too late because climate change can exterminate us. What is the chain of impacts caused due to global warming ?

Read the paragraph and answer the questions given below : Our atmosphere is getting hotter. more turbulent, and more unpredictable because of the “boiling and churning” effect caused by the heat-trapping greenhouse gases within the upper layers of atmosphere. With increase of carbon, methane, or other greenhouse gas levels in the atmosphere, our local weather and global climate is further agitated, heated, and “boiled”. The green house gases such as water vapour, carbon dioxide, methane, nitrous oxide, and ozone are causing great impact on life on earth. Due to global warming, the glaciers are melting, causing sea level rise, coastal submergence and frequent natural disasters. We have to rethink while taking the development projects and help to protect the existing life forms on the earth before its too late because climate change can exterminate us. Why is there increased global warming?

Questions based on paragraph : Earthquakes refers to sudden vibrations on the Earth's surface and shaking of the earth . This leads to generation of seismic waves causing tremors or shaking of Earth's surface . The focal point of earthquake is the point below the epicenter on the earth surface . the major loss occurs near the area where strong convulsions or waves first reach the epicenter . earthquakes can be mild , uauslly occuring in larger numbers of intensified ( acute) , occuring rarely . the magnitude of the earthquake is measured in richter scale . : Based on the given paragraph answer the following questions : Which types of waves is generated due to earhquake and what is its effect ?

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CHETANA PUBLICATION-ELECTROMAGNETIC WAVES AND COMMUNICATON SYSTEM-EXERCISE
  1. Why does amplitude modulation give noisy reception?

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  2. Why are high frequency carrier waves used for transmission of audio si...

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  3. The EM wave emitted by theSun and responsible for heating the Earth's ...

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  4. Choose the correct options. Earth's atmosphere is rechest in

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  5. How does the frequency of a beam of ultraviolet light change when it t...

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  6. The direction of EM wave is given by

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  7. The maximum distance upto which TV transmission from a TV tower of he...

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  8. The waves used by artificial satellites for communication purposes are

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  9. If a TV telecast isto cover a radius of 640 km, what should be the hei...

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  10. In a communication system, noise is most likely to affect the signal.

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  11. For television broadcasting , the frequency employed is normally

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  12. A device that converts one form of energy into another form is termed ...

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  13. The process of regaining the information from carrier wavesis called.....

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  14. The outermost layer of the earth's atmosphere is........

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  15. The antenna behaves as resonant circuit only when its length is..........

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  16. The difference between the upper and lower frequency limits of the sig...

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  17. The layer that adsorbs largest proportion of UV rays is

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  18. Speed of electromagnetic waves is given

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  19. The lower layer of the earth's atmosphere is called.

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  20. Which of the following is NOT a part of electromagnetic spectrum?

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