Atmosphere Quiz - CBSE Class 6 Science

Free practice quiz: Atmosphere (CBSE Class 6 Science). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the atmosphere mainly composed of?

   1. Oxygen
   2. Carbon Dioxide
   3. Nitrogen
   4. Hydrogen
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   Answer: C. Nitrogen

   The atmosphere is mainly composed of nitrogen, which makes up about 78% of the Earth's atmosphere.

2. What is the primary function of the ozone layer?

   1. To trap greenhouse gases
   2. To block harmful UV radiation
   3. To regulate temperature
   4. To provide oxygen
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   Answer: B. To block harmful UV radiation

   The ozone layer protects living organisms by blocking harmful ultraviolet (UV) radiation from the sun.

3. What can cause the greenhouse effect?

   1. Burning fossil fuels
   2. Planting trees
   3. Conserving water
   4. Practicing recycling
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   Answer: A. Burning fossil fuels

   Burning fossil fuels increases the concentration of greenhouse gases like carbon dioxide in the atmosphere, enhancing the greenhouse effect.

4. What is the primary method by which heat is transferred from the Earth's surface to the atmosphere?

   1. Radiation
   2. Conduction
   3. Convection
   4. Evaporation
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   Answer: C. Convection

   Heat is primarily transferred from the Earth's surface to the atmosphere through the process of convection, where warm air rises and cool air sinks.

5. Given a scenario where a location experiences constant heavy rainfall, what might be a contributing factor?

   1. High altitude
   2. Proximity to oceans
   3. Desert conditions
   4. Urban heat island
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   Answer: B. Proximity to oceans

   Locations near oceans often experience heavy rainfall due to moisture from the ocean being carried inland by winds, contributing to precipitation.

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