The cooled water bottle has very cold exposed surface. Due to cool surface there is condensation of water-vapour from air on the surface of water bottle because water vapour is present in atmosphere. The condensed water molecules spread around the bottle. So a puddle of water is noticed after sometime.
Q. Why do water droplets form on the outside of the glass?
Condensation can also produce water droplets on the outside of soda cans or glasses of cold water. When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can. When a pocket of air becomes full of water vapor, clouds form.
Table of Contents
- Q. Why do water droplets form on the outside of the glass?
- Q. When you take out a cooled bottle of water from refrigerator?
- Q. How are clouds formed for Class 5?
- Q. What is winnowing called in English?
- Q. Why is winnowing necessary?
- Q. How will you separate husk or dirt?
- Q. Is it possible to separate sugar mixed with wheat flour is if yes how will you do it?
- Q. Which method is used to separate pebbles and stones from sand?
- Q. Can you separate salt and pepper with water?
Q. When you take out a cooled bottle of water from refrigerator?
Solution: This is because water vapour present in air collide with the surface of cold water bottle which and condenses into water droplets. These water droplets collect and form a puddle of water around the bottle.
Q. How are clouds formed for Class 5?
Clouds are formed when warm air rises, expands and then cools. This cool air can’t hold as much water vapor as the warm air. The vapor will then begin to condense and form itself around dust particles that are floating in the air. When billions of these particles come together , they form a cloud.
Q. What is winnowing called in English?
intransitive verb. 1 : to separate chaff from grain by fanning. 2 : to separate desirable and undesirable elements. winnow. noun.
Q. Why is winnowing necessary?
Winnowing is a blow of current air that helps in the separation of chaff from grains. This is necessary to separate them in order to obtain clean grains that can be used in the eating purpose. Chaff is a waste material that is found in the grains and doesn’t provide any nutrient to our body.
Q. How will you separate husk or dirt?
Solution: Husk or dirt particles can be separated by winnowing method. It is used to separate the heavier and lighter components of a mixture by wind or by blowing air. As the mixture falls down, lighter husk is taken away by blowing air and the heavier grain seeds fall down to make a heap.
Q. Is it possible to separate sugar mixed with wheat flour is if yes how will you do it?
If yes, how will you do it? Solution: Sugar can be separated from wheat flour by sieving. Sugar particles being larger in size are retained by the sieve whereas wheat flour will pass through it.
Q. Which method is used to separate pebbles and stones from sand?
Sieving
Q. Can you separate salt and pepper with water?
If you listen closely, it sounds like static electricity. NOTE: Another way to separate the salt and pepper is to put the mixture in a beaker of water. The salt will sink and the pepper will float.
