Study the model shown here. It is made from a cut plastic bottle, 2 balloons, a tube, a stopper and a cut balloon. This model corresponds to the human lung model as shown.
What will happen when the stretched band is pulled downwards?
a. The balloons will expand
b. The balloons will contract
c. The balloons will be unchanged
d. The bottle will contract
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Answer:
a)the balloon will expand
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Answer:
a) Study the model shown here. It is made from a cut plastic bottle, 2 balloons, a tube, a stopper and a cut balloon. This model corresponds to the human lung model as shown.
The balloons will expand when the stretched band is pulled downwards.
Explanation:
The tied balloon provides more space within the bottle as it is pulled. Air then enters the balloon through the straw, filling it with enough air to fill the space! When you let go of the knot, the space between you and the balloon vanishes, causing the balloon to deflate.
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