Weather Unit Test 6B Unit 3 Lesson 10
The air temperature is 70 degrees, and the relative humidity is 90%. Which conclusion can be made? (1 point)
The dew point temperature is 90% of the air temperature.
The air holds little water vapor and is relatively dry.
The temperature must rise in order for air to become saturated with water vapor.
The amount of water vapor in the air is 90% of what the air can hold.
I need help with the whole thing this will help a lot! :)
They mix the alphabet so we can’t go by those answers to check our work! Thanks though!
To answer this question, we need to understand the concepts of air temperature, relative humidity, dew point temperature, and the amount of water vapor in the air.
1. Air Temperature: This refers to the measure of how hot or cold the air is. In this case, it is given as 70 degrees.
2. Relative Humidity: This is the measure of how much moisture is present in the air compared to the maximum amount of moisture the air can hold at a given temperature. Relative humidity is expressed as a percentage. In this case, it is given as 90%.
3. Dew Point Temperature: This is the temperature at which the air becomes saturated with water vapor and condensation occurs. When the air temperature cools to the dew point temperature, dew, fog, or frost forms. The question does not provide the dew point temperature.
Now let's analyze the given answer options to find the correct conclusion:
Option A: "The dew point temperature is 90% of the air temperature."
This statement is incorrect because the given information does not allow us to determine the dew point temperature.
Option B: "The air holds little water vapor and is relatively dry."
This statement is incorrect because a relative humidity of 90% indicates that the air holds a significant amount of water vapor.
Option C: "The temperature must rise in order for air to become saturated with water vapor."
This statement is incorrect because air becomes saturated when it reaches the dew point temperature, not when the temperature rises.
Option D: "The amount of water vapor in the air is 90% of what the air can hold."
This statement is correct because relative humidity represents the percentage of water vapor present in the air compared to its saturation point. A relative humidity of 90% suggests that the air is holding 90% of the maximum amount of water vapor it is capable of holding at the given temperature.
Therefore, the correct conclusion is: "The amount of water vapor in the air is 90% of what the air can hold."