Question 511 MarkWhich layer is free from water vapour and dust particle?AnswerThe stratosphere is free from water vapour and dust particle.View full question & answer→
Question 521 MarkWhich gas absorbs and trap heat in the air?AnswerCarbon dioxide gas absorbs and trap heat in the air.View full question & answer→
Question 531 MarkIn which layers of the earth's atmosphere does the temperature rises very rapidly with increasing height?AnswerIn thermosphere temperature rises very rapidly with increasing height.View full question & answer→
Question 541 MarkWhich layer of the atmosphere makes radio communication possible?AnswerIonosphere.View full question & answer→
Question 551 MarkWhat is meteorology?AnswerThe scientific study of weather is called meteorology.View full question & answer→
Question 561 MarkWhy do we feel uncomfortable on a humid day?AnswerIt is because sweat from our body does not evaporate easily.View full question & answer→
Question 571 MarkHow does carbon dioxide create a greenhouse effect on earth?AnswerCarbon dioxide released in the atmosphere create a green house effect by trapping the jeart radiated from the earth.View full question & answer→
Question 581 MarkHow does air move?AnswerAir moves from high pressure areas to low pressure areas.View full question & answer→
Question 591 MarkHow is a wind named?AnswerA wind is named after the direction from which it blows.View full question & answer→
Question 601 MarkWhich gas protects us from harmful sun rays?AnswerOzone protects us from the harmful effect of the sun rays.View full question & answer→
Question 611 MarkWhat is the significance of ozone in the atmosphere?AnswerOne important feature of stratosphere is that it contains a layer of ozone gas it protects us from the harmful effect of the sun rays.View full question & answer→
Question 621 MarkWhat is the instrument that measures the atmospheric pressure?AnswerBarometre.View full question & answer→
Question 631 MarkDefine loo.AnswerThe hot and dry local wind of northern planes of India is called loo.View full question & answer→
Question 641 MarkWho invented the celsius scale of temperature?AnswerIt was invented by Anders Celsius.View full question & answer→
Question 651 MarkWhat is the wind vane used for?AnswerWind Vane shows the direction of the wind.View full question & answer→
Question 661 MarkWhat is temperature?AnswerThe degree of hotness and coldness of the air is known as temperature.View full question & answer→
Question 671 MarkWhat is loo?AnswerThe hot and dry local wind of northern plane of India is called loo.View full question & answer→
Question 681 MarkWhich layer of the atmosphere is free from clouds?AnswerStratosphere layer is almost free from Clouds.View full question & answer→