True/False
Indicate whether the sentence or statement is true or false.
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1.
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A wadded-up piece of aluminum foil would work as a diver.
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2.
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Squeezing the bottle makes the diver float to the top.
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3.
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The size of the air pocket at the top of the bottle has no effect on the performance of the diver.
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4.
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Releasing the bottle makes the diver sink.
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5.
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This is impossible! A Cartesian diver that is closed at the bottom will NOT behave the same way as one that is open on the bottom.
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6.
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A closed-end Cartesian diver will also respond to pressure the same way that an open-ended one will. In other words, when you squeeze the bottle, the closed-end diver will also sink.
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7.
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Increased pressure causes the volume of a gas sample to decrease.
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8.
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If you add mass to an object without changing its volume, the objects density will decrease.
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9.
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Whether an object floats or sinks in a fluid depends on whether that objects density is less than or greater than the density of the fluid.
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10.
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You can decrease the density of an object by keeping the mass constant while decreasing the objects volume.
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11.
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A candle that floats is tied to a paper clip. This would make an excellent Cartesian diver.
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12.
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As pressure on the bottle is released, the air bubble inside the diver expands.
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13.
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As pressure on the bottle is increased, the air bubble inside the diver gets smaller.
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Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
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14.
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When you squeeze the bottle the water level inside the diver
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a.
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goes up.
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b.
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goes down.
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c.
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stays the same.
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d.
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none of the above.
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15.
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When you release the bottle the water level in the diver
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a.
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goes up.
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b.
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goes down.
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c.
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stays the same.
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d.
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none of the above.
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16.
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To determine the density of the Cartesian diver we would need to consider
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a.
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mass & color.
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b.
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mass & length.
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c.
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mass & size.
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d.
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mass & volume.
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17.
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According to Boyles Law, the volume of a gas is directly related to
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a.
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the size of the container.
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c.
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the type of gas.
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b.
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the pressure being applied to it.
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d.
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the shape of the container.
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18.
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A Cartesian diver is stuck on the bottom of a bottle filled with water, with not quite enough air to get it to the top. Which of the following suggestions would work?
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a.
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Shake the bottle
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c.
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heat the bottle
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b.
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Squeeze the bottle
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d.
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cool down the bottle
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Matching
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19.
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Which illustration shows a diver with the greatest density?
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20.
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Which illustration shows a diver with the lowest density?
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21.
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Which illustration shows a diver with the most volume?
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22.
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Which illustration shows a diver with the least volume?
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23.
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Which illustration shows a bottle with the highest pressure?
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24.
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Which illustration shows a bottle with the lowest pressure?
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25.
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Which diver shows the best balance between pressure and density?
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