The air temperature is 70 degrees, and the relative humidity is 90%. Which conclusion can be made?
• The temperature must rise in order for air to become saturated with water vapor.
• The air holds little water vapor and is relatively dry.
• The dew point temperature is 90% of the air temperature.
• The amount of water vapor in the air is 90% of what the air can hold.
It’s D
The conclusion that can be made is: The amount of water vapor in the air is 90% of what the air can hold.
To determine which conclusion can be made from the given information, we need to understand the concepts related to air temperature and relative humidity.
Air temperature is a measure of how hot or cold the air is. It is typically measured using a thermometer and is commonly reported in degrees Celsius or Fahrenheit. Relative humidity, on the other hand, describes the amount of moisture in the air relative to the maximum amount it can hold at a given temperature.
The first conclusion, "The temperature must rise in order for the air to become saturated with water vapor," is not necessarily true. While it is correct that warmer air can hold more moisture than cooler air, the given information does not provide any insight into whether the air is saturated or not. Therefore, this conclusion cannot be made.
The second conclusion, "The air holds little water vapor and is relatively dry," also cannot be made. The relative humidity value of 90% indicates that the air is holding a significant amount of moisture relative to its maximum capacity. Therefore, it would not be accurate to say that the air is relatively dry.
The third conclusion, "The dew point temperature is 90% of the air temperature," is not supported by the given information. The dew point temperature is the temperature at which the air becomes saturated and condensation begins to form. It is not directly related to the relative humidity value. Without knowing the actual values of the air temperature or dew point temperature, we cannot confirm this conclusion.
The fourth conclusion, "The amount of water vapor in the air is 90% of what the air can hold," is the most accurate conclusion that can be made based on the given information. If the relative humidity is 90%, it means that the air is holding 90% of the maximum amount of moisture it can hold at its current temperature. This implies that the air is relatively humid and close to its saturation point.
Therefore, the correct conclusion is that the amount of water vapor in the air is 90% of what the air can hold.