Choose the best answer to each question and write the appropriate ...

Choose the best answer to each question and write the appropriate letter in the space provided.
40) As a whale swims deeper into the ocean, increasing water pressure squeezes its volume,
making it smaller. As the whale swims deeper and deeper, the buoyant force on it
__________.
A) decreases B) increases C) remains unchanged
41) As a high-altitude balloon sinks lower and lower into the atmosphere, its __________.
A) volume decreases. B) density decreases.
C) weight decreases. D) mass decreases.
42) Which has more weight, a balloon filled with helium or the same size balloon filled with
air?
A) The helium balloon
B) The air balloon
C) Neither -- they both have the same weight.
43) As a woman holding her breath swims deeper and deeper beneath the water's surface, her
density __________.
A) increases B) decreases C) remains the same
44) The lift that supports an airplane wing is a consequence of __________.
A) Archimede's principle. B) Bernoulli's principle.
C) Pascal's principle. D) Lake Dallas' Principal
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