CLASS 6TH DAY 5
INTRODUCTION
Reversible and irreversible changes
All changes on this planet are one of many two sorts – Reversible modifications and irreversible modifications. A change which may occur backward, that’s, will be reversed is named a reversible change. If you retain water within the freezer for a while, it transforms into ice. But as quickly as you are taking it out of the freezer, it turns into water once more. This is a reversible change. Similarly, in the event you boil water, it evaporates and turns into water vapor. When you cool this vapor down, it turns again to water.
A change which can’t occur backward, that’s, it can’t be reversed is named an irreversible change. When you burn a bit of paper, it turns to ash. It can’t develop into paper once more. Your top can’t lower. These are irreversible modifications. They can’t be reversed in any respect.
Learn extra about reversible and irreversible modifications👇 👇
Based on your understanding do the following activities and classify them as reversible or irreversible👇 👇
Activity 1:
This activity is to inflate a balloon and see if we can reverse the things.
Answer : We can inflate or deflate on our wish. It is reversible.
Activity 2:
This activity is to make a paper aeroplane by folding it and see if we can reverse the things.
Answer: We can make paper aeroplane by folding the paper. We can unfold the aeroplane and get the paper in the previous shape.
Activity 3:
The activity 3 is to roll a roti from the dough and check if we can make the dough again if we are not happy with the rolled roti.
Answer: We can roll the dough into roti and can reverse the thing as well.
Activity 4:
The activity 4 is to prick the balloon and see if we can get back the balloon in the previous shape.
Answer: Pricking an inflated balloon is irreversible. Here we cannot get back the balloon in the previous state.
Activity 5:
The activity 5 is to draw an aeroplane on paper, cut it and see we can get back the paper in the original state.
Answer: Once we cut the paper we cannot get back the paper in the original state.
Activity 6:
The activity is to bake a rolled roti on tava and see if we can get back the dough.
Answer: Baking of rolled roti is irreversible. Here we cannot get the dough we used to make roti.
Inference of activities one to six: Some processes are reversible while some are not.
Examples of reversible things: Clay lump to pot, wet cloth to dry cloth, woollen yarn to a knitted sweater, cold milk to hot milk, straight string to coiled string, stretched rubber band to its normal size, ice cream to molten ice cream, heating wax.
Examples of irreversible things: Baked clay pot to clay lump, raw egg to boiled egg, batter to idli, grain to its flour, bud to flower, milk to paneer, cow dung to biogas, black tar to a road, burning of the candle, burning of an incense stick, milk to curd.
Here is a small quiz to test your understanding. Try to attempt all the questions and get the highest marks possible.👇 👇
FUN ACTIVITY
Write a poem about observing the world within or around you.we don’t want to bound your imagination hence the poem can be about anything that you feel like writing.
GAME TIME
Gomoku, also called Five in a Row, is an abstract strategy board game. It is traditionally played with Go pieces (black and white stones) on a Go board. It can be played using the 15×15 board[1] or the 19×19 board[2]. Because pieces are typically not moved or removed from the board, Gomoku may also be played as a paper-and-pencil game. The game is known in several countries under different names. Players alternate turns placing a stone of their color on an empty intersection. The winner is the first player to form an unbroken chain of five stones horizontally, vertically, or diagonally.
To know more about the game👇 👇
