Heat Transfer and the Movement of Air

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Heat Transfer and the Movement of Air

• LESSON 4
• STORMS

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OBJECTIVES

• Investigate the effect of surface temperature on
  the temperature of the air above the surface.
• Hypothesize how heat is transferred between the
  earths surface and the air above it.
• Observe describe the effect of surface
  temperature on the movement of air above the
  surface

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OBJECTIVES

• Determine the basic conditions under which water
  moves through the air.
• Develop working definitions for the terms stable
  air mass and unstable air mass

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GETTING STARTED

• LOOK AT STUDENT SHEET 3.1B
• What was the temperature of Portland Parklands at
  200 p.m.?
• How do you think this temperature might compare
  with the temperature of the Atlantic Ocean near
  Portland, Maine, at 200 p.m.?
• How do you think the temperature of the earths
  surface affects the temperature of air above it?
• How do you think the temperature of the air
  affects how air moves?

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Inquiry 4.1 Investigating the Temperature of Air

• Read the question at the top of Student Sheet
  4.1.
• Review use of convection tubes and thermometers.
• Demo of Experimental Setup
• See Figure 4.1 pg. 44
• See Figure 4.2 pg. 45

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VARIABLE THAT WILL CHANGE

• TEMPERATURE OF WATER IN EACH CONTAINER
• Record baseline
• temperature of each
• convection tube on
• Student sheet.

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Fair Test

• HOW WOULD YOU MAKE THIS EXPERIMENT A FAIR TEST?
• VARIABLES THAT WILL REMAIN THE SAME
• AMT. OF WATER
• ATM OF TIME EA. CONTAINER OF WATER IS UNDER THE
  CONVECTION TUBE
• AMT OF TIME BET. TEMP READINGS

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PREDICTION

• THE SURFACE TEMPERATURE IN THE CONVECTION TUBES
  WILL CAUSE THE AIR ABOVE IT TO.

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HYPOTHESIS

• I THINK THAT WILL OCCUR BECAUSE..

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Student Sheet 4.2 Investigating How Warm and
Cold Air Move Question I will try to
answer Directions Answer the questions. Then
complete the diagram after you conduct your
investigation. 1. How will you set up your
equipment in order to make this a fair test?
What will you keep the same?
What one variable will you test? 2.
Now make a prediction. What do you think will
happen when the two air masses meet?
3. Draw a diagram in the space below showing
what happened when you introduced smoke into
the tube.      
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REFLECTION QUESTIONS A

• How did the temperature of each
• container of water affect the
• temperature of the air above it?
• Hot water heated air directly above it
• Cold water cooled air directly above it

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Reflection Question B

• The movement of heat is called heat transfer.
  Describe the heat transfer between the container
  of hot water air. Heat moved from warm water
  to the cooler air , which heated the air
• Describe the heat transfer between the container
  of cold water the air.
• Heat moved from the warm air to the cooler water,
  which heated the water cooled the air

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Reflection Question C

• Under what conditions was it difficult to see
  through a cylinder? Why do you think this
  happened?
• The tube with hot water fogged up because
  moisture formed on the inside of the convection
  tube.
• More condensation took place with hot water
  because of greater evaporation

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Reflection Question D

• Why do you think covering the container would
  help keep the cylinder clear?
• The plastic would reduce evaporation by blocking
  the escape of water vapor