Final answer:
Explanation of why using a straw to suck liquid is not possible on the moon due to the absence of atmosphere and pressure difference.
Explanation:
On the surface of the moon, the lack of atmosphere plays a crucial role in the inability to use a straw to suck liquid. When you suck on a straw on Earth, you create a partial vacuum inside your mouth, lowering the internal pressure. However, on the moon, where there is no atmosphere, the pressure difference necessary for sucking up liquid is absent.
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