Key Stage 3 (KS3) General Knowledge Practice Test

What is the boiling point of water at sea level in degrees Celsius?

90 degrees Celsius 100 degrees Celsius 110 degrees Celsius 120 degrees Celsius

Correct Answer:

100 degrees Celsius

Explanation:

The boiling point of water at sea level is 100 degrees Celsius. This temperature is significant because it is the point at which water transitions from a liquid state to a gas (steam) under standard atmospheric pressure, which is defined as 1 atmosphere (atm) at sea level. This boiling point can be influenced by factors such as altitude and atmospheric pressure; for instance, at higher altitudes where the atmosphere is thinner, water boils at a lower temperature. Conversely, if the atmospheric pressure is increased, water can boil at a higher temperature. Understanding the boiling point of water is essential in various scientific and practical contexts, such as cooking, laboratory experiments, and understanding weather patterns.

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