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 How Things Work 18 Flashcards |
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Fill in the blank: A leaf floats on water because it is ___ and has a shape that allows it to displace water effectively. |
Card: 1 / 18 |
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Light  |
Card: 2 / 18 |
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True or False: All heavy objects sink in water. |
Card: 3 / 18 |
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False. Some heavy objects can float if they trap air and are shaped appropriately.  |
Card: 4 / 18 |
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What happens when a bottle full of water is placed in water? |
Card: 5 / 18 |
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It sinks because it is heavy and does not trap air.  |
Card: 6 / 18 |
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Fill in the blank: The act of an object turning around in a circle is known as ___. |
Card: 7 / 18 |
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Spinning  |
Card: 8 / 18 |
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A flat piece of aluminium foil floats because it ___ air. |
Card: 9 / 18 |
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Traps |
Card: 10 / 18 |
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True or False: A tightly packed ball of foil will float on water. |
Card: 11 / 18 |
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False. A tightly packed ball of foil sinks because it is heavy and traps less air.  |
Card: 12 / 18 |
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Fill in the blank: Boats have better floating capability when they are ___ and have a shape that effectively traps air. |
Card: 13 / 18 |
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Balanced  |
Card: 14 / 18 |
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Erasers do not spin correctly because they are ___ in weight distribution. |
Card: 15 / 18 |
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Unbalanced |
Card: 16 / 18 |
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Fill in the blank: A ___ is a traditional Indian spinning wheel used to spin thread from cotton. |
Card: 17 / 18 |
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Charkha  |
Card: 18 / 18 |
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Completed! Keep practicing to master all of them. |
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