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    Question

    Why does water boil at lower temperatures on

    hills?
    A There is less carbon dioxide on the hills Correct Answer Incorrect Answer
    B There is a decrease in air pressure on the hills Correct Answer Incorrect Answer
    C There is less oxygen Correct Answer Incorrect Answer
    D It is cold on the hills Correct Answer Incorrect Answer

    Solution

    On higher altitudes such as hills, the atmospheric pressure is lower compared to sea level. This reduced pressure decreases the boiling point of water, causing it to boil at temperatures lower than 100°C, unlike at sea level where it boils at exactly 100°C.

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