Day 29 Investigation 6 part 3 Condensation & Dew Point.

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Presentation transcript:

Day 29 Investigation 6 part 3 Condensation & Dew Point

REVIEW HOW DO YOU KNOW THAT THERE IS WATER VAPOR IN THE AIR? WHAT DID YOU DO TO GET WATER VAPOR TO CONDENSE? WAS HEAT TRANSFER INVOLVED IN THE CONDENSATION PROCESS?

PONDER/INQUIRE IS THERE A TEMPERATURE AT WHICH CONDENSATION STARTS TO HAPPEN? WILL CONDENSATION TAKE PLACE AT ANY TEMPERATURE IF YOU ALLOW ENOUGH TIME FOR ENERGY TRANSFER TO OCCUR? DISCUSS THESE 2 QUESTIONS WITH A PARTNER.

PROCEDURE FOLLOW THE INSTUCTIONS 1. RECORD THE TEMPERATURE OF A HALF CUP OF WATER. ADD 1 ICE CUBE. STIR CAREFULLY WITH A THERMOMETER. MONITER THE TEMPERATURE. IF ICE MELTS ADD ANOTHER ICE CUBE, ONE AT A TIME UNTIL YOU SEE FOG FORM ON THE SIDE OF THE CUP.

PROCEDURE CONT. REMOVE ICE CUBES THE MOMENT YOU SEE CONDENSATION ON THE CUP. RECORD THE TEMPERATURE AT WHICH CONDENSATION FIRST OCCURRED. POUR THE WATER INTO AN EMPTY DRY CUP. WATCH TO SEE IF CONDENSATION FORMS. IF IT DOESN’T RECORD THE TEMP.

PROCEDURE CONT. IF FOG DOES OCCUR, CONTINUE TO POUR WATER BACK AND FORTH UNTIL NO FOG FORMS ON THE CUP. RECORD THE HIGHEST TEMPERATURE AT WHICH CONDENSATION OCCURRED. SET UP A RECORDING CHART.

CONDENSATION CHART TEMPERATURE CONDENSATION (YES OR NO)

REPORT RESULTS WHEN FINISHED RECORDING INFORMATION ON THE CHART, WRITE YOUR GROUPS HIGHEST TEMPERATURE AT WHICH CONDENSATION FORMS. ONCE ALL TEMPERATURES ARE RECORDED ON THE BOARD, CALCULATE THE AVERAGE TEMPERATURE AT WHICH WATER VAPOR CONDENSES. RECORD THE TEMPERATURE ON YOUR CHART.

DEW POINT SOME PEOPLE REFER TO THE CONDENSATION ON THE SIDE OF THE GLASS AS DEW. WHAT IS DEW? HOW DOES DEW FORM?

DEFINITION DEW POINT - IS THE TEMPERATURE AT WHICH AIR IS SATURATED.

DEW POINT QUESTIONS OPEN TO PAGE 35 “DEW POINT QUESTIONS” IN YOUR LAB BOOK. WORK BY YOURSELF TO ANSWER THE QUESTIONS.