Final answer:
Sumai is measuring the amount of water vapor in the air to predict the weather. Humidity, specifically relative humidity, determines the amount of water vapor in the air compared to the maximum amount it can hold. Temperature plays a crucial role in the amount of water vapor the air can hold.
Step-by-step explanation:
Sumai is measuring the amount of water vapor in the air, which can help in predicting the weather. When we talk about humidity, we are referring to relative humidity, which tells us how much water vapor is in the air compared to the maximum possible amount. The amount of water vapor in the air depends on its temperature, with the air being able to hold more water vapor at higher temperatures.