1. Day 30 Investigation 6 part 3 Condensation & Dew Point Cont.

2. THERMOMETERS ONE WAY RELATIVE HUMIDITY CAN BE DETERMINED IS BY COMPARING THE TEMPERATURE OF THE AIR AND THE TEMPERATURE OF A PIECE OF WET CLOTH. THESE ARE CALLED DRY-BULB AND WET- BULB READINGS. WHAT HAPPENED WHEN WE WET THE FABRIC ON THE WET-BULB THERMOMETER AND WAVED IT IN THE AIR?

3. DEMONSTRATION I WILL CONDUCT AN EXPERIMENT JUST LIKE YOU DID EARLIER. THIS TIME WE WILL FIGURE OUT RELATIVE HUMIDITY.

4. CALCULATIONS AFTER FIVE MINUTES OF WAVING THE THERMOMETERS, RECORD THE TEMPERATURES. TURN TO PAGE 79 IN THE RESOURCE BOOK “HUMIDITY CALCULATOR”.

5. CALCULATIONS CONT. SUBTRACT THE WET-BULB TEMPERATURE FROM THE DRY-BULB TEMPERATURE TO DETERMINE THE DIFFERENCE. FIND THE DRY-BULB TEMPERATURE ON THE LEFT COLUMN OF THE CHART. FIND THE TEMPERATURE DIFFERENCE IN THE ROW ACROSS THE TOP OF THE CHART. FIND THE SQUARE WHERE THE TWO READINGS INTERSECT. THIS IS THE RELATIVE HUMIDITY.

6. Labels and Connection to text Visualization Exercise 6.1

7. Resource P. 35

8. READING READ PAGE 34 IN RESOURCE BOOK “ DRAGON’S BREATH” ANSWER THE QUESTIONS THAT FOLLOW.