1. Identify the three curves on the diagram: the top curve is the saturation vapor pressure curve, the middle curve is the dew point temperature curve, and the bottom curve is the wet-bulb temperature curve.
2. Locate the intersection of the dry-bulb temperature line (vertical line) with the saturation vapor pressure curve to find the saturation vapor pressure at that temperature.
3. Follow the horizontal line from this intersection to the left to read the saturation vapor pressure value on the y-axis.
4. Find the dew point temperature by locating where the horizontal line from the saturation vapor pressure intersects the dew point temperature curve, then drop vertically to the x-axis to read the dew point temperature.
5. Determine the wet-bulb temperature by finding where the horizontal line from the saturation vapor pressure intersects the wet-bulb temperature curve, then drop vertically to the x-axis to read the wet-bulb temperature.
6. Calculate the relative humidity using the formula: Relative Humidity = (Actual Vapor Pressure / Saturation Vapor Pressure) × 100%. The actual vapor pressure can be found from the dew point temperature using the saturation vapor pressure curve.
Parent Tip: Review the logic above to help your child master the concept of earths interior worksheet.
