Advertisements
Advertisements
प्रश्न
To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet.
Advertisements
उत्तर
During exhalation (or breathing out), carbon dioxide is released along with water vapours. If one breathes out onto glass, the released water vapours collide with the surface of the glass, thereby making it cooler. As a result, the water vapours present in the air surrounding the glass condense and get attached to the glass surface. Consequently, the glass becomes wet.
संबंधित प्रश्न
Discuss with your friends.
Rain water harvesting has an important role to protect our environment.
Water cycle controls Earth‛s temperature.
Water cycle is also called as ______.
Observe the given graph carefully and answer the questions.
- What percentage of water is seen in fish?
- Name the food item that has maximum amount of water in its content.
- Name the food item that has minimum amount of water in its content.
- Human body consists of about ______ percentage of water.
- Specify the food item that can be consumed by a person when he/she is suffering from dehydration.
In plants, the loss of water in the form of vapour from the aerial parts through ______.
Maximum surface water is stored in lakes.
One of the following processes is not a step involved in the water-cycle operating in nature
Fill in the blanks in the given passage.
The rainwater and ______ from other sources such as rivers and ponds seeps through the ______ and fills the empty spaces and cracks deep below the ground. The process of seeping of water into the ground is called ______.
Assertion (A): Biosphere is a dynamic and stable system.
Reason (R): There is a constant interaction between biotic and abiotic components in the biosphere.
How are clouds and fogs formed?
