Question

elative humidity is a measure of how much water vapor is in the air compared to how much the air could hold at that temperature.

For example, 30% relative humidity means the air contains only 30% of the water vapor it can hold at that temperature. In other words, the air is capable of holding much more moisture than it currently is.

The graph below shows the relative humidity in Kansas City, Missouri from October 18–October 27, 2023. The maximum (highest) and minimum (lowest) values were recorded each day.A line graphs shows the relative humidity over 10 days. The maximum relative humidity is 80% on Day 18, increases to 95% on Day 19 and 20, returns to 80% on day 22 and 23, decreases to 67% on Day 24, increases to 100% on Day 25 and 26, and falls to 92% on Day 27.

1
On October 18, the minimum relative humidity was 38%. What was the maximum relative humidity recorded that day?


A
32%

B
80%

C
85%

D
100%
2
Fill in the blanks to complete the sentence. Not all answer choices will be used.

The air in Kansas City was
on October 25 and 26. On those days, the air contained 100% of the
it was capable of holding.

When relative humidity is 100%, the air is saturated with water vapor. This means it cannot hold any more moisture. When saturated air cools, water vapor condenses into a liquid. Liquid water falls back to Earth as precipitation, including rain, snow, sleet, and hail.

Review additional data from Kansas City in the graph below. Use the graph to identify conditions that make precipitation most likely to occur.A line graph of atmospheric pressure, a line graph of relative humidity, and a bar graph of precipitation are shown over 10 days. Atmospheric pressure is 29.1 inches of mercury on Day 18, decreases to 28.95 on Day 19, then steadily increases to 29.4 by Day 24. It steadily decreases to 29.1 on Day 26, and returns to 29.25 on Day 27. Maximum relative humidity is 80% on Day 18, increases to 95% on Day 19 and 20, returns to 80% on day 22 and 23, decreases to 67% on Day 24, increases to 100% on Day 25 and 26, and falls to 92% on Day 27. Precipitation occurs on Day 20, 21, and 26.

3
Use the graph to compare weather conditions on October 24 and October 26. Then, sort the descriptions by date below.

Choose answers from the answer bank to place in the table. Use the arrow keys to select an answer and press space when you're ready to drag it to a new location. Then use the arrow keys to move the answer to a response area and press space to drop it. You may add more than one answer to a blank space.
October 24

October 26

4
In October, precipitation in Kansas City is usually in the form of rain. According to the graph, what are the weather conditions in Kansas City when it rains?


A
Relative humidity is low and atmospheric pressure is low

B
Relative humidity is low and atmospheric pressure is high

C
Relative humidity is high and atmospheric pressure is low

D
Relative humidity is high and atmospheric pressure is high
5
Imagine that you have been asked to predict if it will rain tomorrow in your town. Will knowing the relative humidity be enough to make an accurate prediction? Why or why not?

Answers

GPT-4o mini
1. On October 18, the maximum relative humidity recorded that day was:
**B. 80%**

2. Fill in the blanks to complete the sentence. Not all answer choices will be used.
The air in Kansas City was **saturated** on October 25 and 26. On those days, the air contained 100% of the **water vapor** it was capable of holding.

3. Use the graph to compare weather conditions on October 24 and October 26. Then, sort the descriptions by date below:

**October 24:**
- Relative humidity was 67%.
- Atmospheric pressure was relatively high compared to the following day.
- No precipitation recorded.

**October 26:**
- Relative humidity was 100%.
- Atmospheric pressure was lower than on October 24.
- Precipitation occurred.

4. According to the graph, the weather conditions in Kansas City when it rains are:
**C. Relative humidity is high and atmospheric pressure is low**

5. Will knowing the relative humidity be enough to make an accurate prediction about rain? Why or why not?
Knowing the relative humidity is important, but it is not enough on its own to make an accurate prediction. While high relative humidity can indicate the potential for rain, other factors such as atmospheric pressure, temperature, and local weather patterns also play significant roles in determining whether it will rain. For a more accurate prediction, it is necessary to consider a combination of these factors.