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प्रश्न
Find out from the other groups which things floated and which sank in the water?
After doing the experiment, fill in the blanks.
The aluminium foil ______ when it was spread out. When pressed tightly into a ball it ______. This may have happened because ______
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उत्तर
The aluminium foil floated when it was spread out. When pressed tightly into a ball it sank. This may have happened because aluminium foil spread out could displace more water compared to its weight.
APPEARS IN
संबंधित प्रश्न
Ayesha put a puffed puri in a bowl of water. Would it sink or float?
You put a steel plate on water. Would it sink or float? What would happen to a spoon?
Have you seen that something floats on water while others sink?
Do this experiment in groups of four friends. Each group will need a big pot filled with water and the things listed on the table. Put each thing one by one in water and observe. Write your observations in the table given below.
Mark [✓] for the things that float. Mark [×] for those that sink.
| Things to be put in water | I guessed before I did it | I saw when I did it |
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| Iron nail or pin | ||
| Matchstick | ||
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Aluminum foil (from medicine packing)
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| A piece of ice |
Take some water in a glass. Put a lemon in it. Now keep putting salt in the water, half-a-spoon at a time. Were you able to float your lemon in water?
Could you see the salt after it dissolved in water? If no, why?
Do you think the oil got dissolved in the water? Why do you think so?
One day Ayesha’s mother put some water to boil on the stove for making tea. She got busy with something and forgot about it. When she remembered and came to check, she found very little water left in the pan.
Think where did the water go?
You have been given some mishri pieces (lumps of sugar). Suggest some ways to dissolve them quickly.
Find out from the other groups which things floated and which sank in the water?
After doing the experiment, fill in the blanks.
The empty plastic bottle ______ on water. The bottle filled with water ______ because ______
