ICSE Class 9 Atmosphere — practice questions
30 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice ICSE Class 9 Atmosphere in the app →The lowermost layer of the atmosphere is the:The ozone layer is contained in the:All changes in climate and weather take place in the:The highest layer of the atmosphere is the:Radio waves transmitted from the earth are reflected back by the:Counted by temperature conditions, the atmosphere has how many layers?The average height of the troposphere is about:Near the poles, the troposphere extends roughly to a height of:At the equator, the troposphere reaches about:Ozone is found between which heights above the earth's surface?The ionosphere is located between:About 99 per cent of the atmosphere's total mass lies within:The ozone layer acts as a filter by absorbing:The upper limit of the mesosphere is known as the:Carbon dioxide matters for the earth's temperature because it drives the:The troposphere is thickest at the equator because:Within the troposphere, temperature decreases at the rate of:The volume of carbon dioxide has been rising in past decades mainly due to:Water vapour condenses to produce clouds around:Which particles serve as the hygroscopic nuclei for condensation?The ionosphere takes its name from:In the warm and wet tropics, water vapour may account for:In the dry and cold areas of desert and poles, water vapour may be:The mesosphere lies directly above the:Dust particles and water vapour are concentrated in which layer?The one important feature that sets the stratosphere apart is that it:Within the ionosphere, temperature:The atmosphere contains a life-giving gas for plants, which is:For humans and animals, the life-giving gas of the atmosphere is:The boundary at the top of the troposphere is called the: