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•   Draw square•   Get density activity ready•   Get out jar, green food coloring and hot plate•   Gather jars, cans, sara...
BellworkWhat kind of weather can we expect in the nextfew days according to the map?                                      ...
Why Do We Have  Weather?
WHY DO WE HAVE THE WEATHER ?        • Just think about it!• Why is there wind? Why does it blow from one direction one day...
If we were to pick one term to helpexplain why we have weather, what do you       think would be a good word?You might pic...
Convection: the transfer of heat,    usually in gases or liquids.
Convection Demo• How does convection work?• See if you can watch the demo  and make sense of convection
Warm Air - How do air molecules act?The walls of this room are the walls of ourcontainer.You are all air molecules. Lots o...
Cold Air - How do air molecules act?The walls of this room are the walls of ourcontainer.You are all air molecules. Lots o...
Density???• how close together the molecules of a substance  are or how much mass a substance has in a  given space• Densi...
Which one is more dense?  How do you know?Flour            Sugar
After the atmosphere is warmed by radiation (sun) and conduction, the heat is transferred throughout the              atmo...
Density of Air – Square on the Floor• Everyone stand inside   • Half the class stand  the square                outside th...
Density of Air• Can you explain why warm air  rises with what you know  about density now?• Can you explain why cool air  ...
How Do Clouds Form?• First let’s review evaporation• Evaporation: the process of a liquid becoming  a vapor (gas)• Cut and...
How Do Clouds Form?Step 1 – Warm, moist air risesStep 2 – That warm air hits thecooler air in the upper atmosphereStep 3 –...
Teach Your Neighbor Using        Gestures    I’llDemonstrate
How Do Clouds Form?Step 1 – Warm, moist air risesStep 2 – That warm air hits thecooler air in the upper atmosphereStep 3 –...
Did You Know?
How Does Air Behave?• Cold air can hold less  moisture than warm air• Warm air can hold more  moisture than cold air
Consequences of Rotation: The Coriolis           Effect - Video
The Weather Highways    Coriolis Effect          • Created by the            ROTATION of the Earth          • Causes the a...
The Westerlies• Winds that blow from the west to the east• most of our weather comes from the west• Cut and Paste Global W...
What Weather Should We Expect?
Trade Winds• Winds that blow from the east to the west• These affect the paths of hurricanes
Let’s break for a short review:1.Transfer of heat in liquids or  gases_____.2. _____ air is dense and tends to sink.3. Col...
How did you do?1. CONVECTION2. COLD3. LESS4. RIGHT
Cloud in a Bottle Demo
Cloud in a Bottle LabC.H.A.M.P.S. – Group Work, Voice Level 2,Complete Lab, Finger Signals, Jobs1.We will add water to 1/3...
Let’s Play a Game• Weather Game
Now What?• Ok, so we know that the weather moves  around on these highways and that warm  air rises and cold air sinks.• B...
Let’s take another look at the weather                 map:• Notice that there are  H’s and L’s on the map• There are also...
High and Low Pressure - Video
High Pressure Areas          • Cooler air sinks            and is warmed          • This usually            means sunny   ...
Low Pressure Areas• When warm air  rises and cools• Precipitation  and stormy  weather
So, if you see a big H on the weather map over the area you live, you can         expect fair weather.
When you see a big L in your area, there will probably be stormy            weather
Teach Two of Your Neighbors• Action of High Pressure: Push Down on neighbor’s                   Pressure  shoulders and sa...
How do Air and Water Molecules Act Under Pressure• Half the class stand          • Now, I’m going to stop  outside the squ...
Barometer• Barometers are used by  meteorologists to keep  track of pressure in the  air.
Understanding the Barometer• If you see the barometer  pointer moving downward,  what does that mean?   – The pressure is ...
These highs and lows move alongthe jet stream and bring us our       weather changes.• Video
Jet Stream• A fast flowing river of air found in the  atmosphere at around 12 km above the  surface of the Earth.• They fo...
Jet Stream DemoUsing: Hair Dryer, ping pong ball•The hair dryer shoots a column of air up betweenair that is also in the r...
Fronts and Air Masses   • Air mass: a large body of air whose    temperature and moisture are fairly          similar at a...
Warm and Cold Fronts - Video
Ok, now we see the difference in         the air masses  • Let’s look at the different fronts and their impact on         ...
Warm Fronts• A warm front is  warm air taking  over the cool air• The front edge of  warm air must  “overrun” cold air• Sl...
Cold Fronts• Cold air advances         Video  into region of  warm air• Rain and  Thunderstorms• Clearing conditions  afte...
Cold Front is Moving In – 5:28• As the warm air was pushed up (low pressure allowed it to rise),  the warm air cooled and ...
Stationary Fronts• Surface positions  of the front do  not move• Often a region of  clouds• Neither the cold  or the warm ...
Quiz1. Get out a sheet of paper.2. Spread out around the room.3. C.H.A.M.P.S.  •   Voice Level of 1  •   Come to my desk f...
1.• What causes a low  pressure system to  create clouds and  sometimes precipitation?   L
2.• What type of  front can be  found close to  point D ?
3.• Which of these  fronts would you  expect to have  greater  precipitation,  but be short  lived as the  front passes?
4. • Give the name of   the air mass that   would have the   following   characteristics: • cool, moist,   unstable
5.That important weather word that refers to the transfer of heat
6.In general, air near the equator tends to_____ ( rise or fall ).
7. ________ causes air andwater to be deflected to the right north of the equator.
8.Which of the weather highways usually        controls our weather
9.Warm air holds ( more or less )   moisture than cold air?
10.• If there is a big     H on the      H    weather map   where you live, would you expect   fair or stormy      weather?
How did you do?Let’s check the answers!
Answers1. The low pressure allows the warm air to rise. As the  warm air rises, it cools. Water vapor cools and  condenses...
Predict the Weather Game• Game
Centers• Vocabulary
Weather   winds, air masses, air pressures, fronts
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Weather winds, air masses, air pressures, fronts

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Weather winds, air masses, air pressures, fronts

  1. 1. • Draw square• Get density activity ready• Get out jar, green food coloring and hot plate• Gather jars, cans, saran wrap, rubber bands, straws and index cards for barometers
  2. 2. BellworkWhat kind of weather can we expect in the nextfew days according to the map? Us
  3. 3. Why Do We Have Weather?
  4. 4. WHY DO WE HAVE THE WEATHER ? • Just think about it!• Why is there wind? Why does it blow from one direction one day and another the next? • Why is it rainy one day and dry the next? • How come it’s cold in the winter?• How can we have hail in the summer?• What causes snow and freezing rain?
  5. 5. If we were to pick one term to helpexplain why we have weather, what do you think would be a good word?You might pick heat or sun….but another good choice would be Convection
  6. 6. Convection: the transfer of heat, usually in gases or liquids.
  7. 7. Convection Demo• How does convection work?• See if you can watch the demo and make sense of convection
  8. 8. Warm Air - How do air molecules act?The walls of this room are the walls of ourcontainer.You are all air molecules. Lots of nitrogen, someoxygen and a little carbon dioxide.Warm air is active. It moves around quickly andwill bounce off the walls.Say:I’m moving FAST.I can hold lots of moisture.
  9. 9. Cold Air - How do air molecules act?The walls of this room are the walls of ourcontainer.You are all air molecules. Lots of nitrogen, someoxygen and a little carbon dioxide.Cold air moves slowly. It moves around veryslowly and will move closer together.Say:I’m moving slowly.I can’t hold much moisture.
  10. 10. Density???• how close together the molecules of a substance are or how much mass a substance has in a given space• Density Demo – Hold each – What is the size of the two canisters? – Does one feel heavier than the other? – Mass the two and write down the mass of each. Suga Flour r
  11. 11. Which one is more dense? How do you know?Flour Sugar
  12. 12. After the atmosphere is warmed by radiation (sun) and conduction, the heat is transferred throughout the atmosphere by convection.• Warmed air: has more space between the molecules, it’s less dense and rises• Cooled air is more dense and tends to sink• In general, air near the equator tends to rise and air near the poles tends to sink
  13. 13. Density of Air – Square on the Floor• Everyone stand inside • Half the class stand the square outside the square.• You are all air • The ones inside the molecules (lots of square spread out. nitrogen, some • You are warm air. oxygen, and a little • What will you do? carbon dioxide, etc.)• You are cold air. What will you do?
  14. 14. Density of Air• Can you explain why warm air rises with what you know about density now?• Can you explain why cool air sinks with what you know about density now?
  15. 15. How Do Clouds Form?• First let’s review evaporation• Evaporation: the process of a liquid becoming a vapor (gas)• Cut and Paste Image• Phet: http://phet.colorado.edu/sims/states- of-matter/states-of-matter-basics_en.jnlp
  16. 16. How Do Clouds Form?Step 1 – Warm, moist air risesStep 2 – That warm air hits thecooler air in the upper atmosphereStep 3 – When it hits the cooler air,it condenses onto dust particles inthe air into water droplets
  17. 17. Teach Your Neighbor Using Gestures I’llDemonstrate
  18. 18. How Do Clouds Form?Step 1 – Warm, moist air risesStep 2 – That warm air hits thecooler air in the upper atmosphereStep 3 – When it hits the cooler air,it condenses onto dust particles inthe air into water droplets
  19. 19. Did You Know?
  20. 20. How Does Air Behave?• Cold air can hold less moisture than warm air• Warm air can hold more moisture than cold air
  21. 21. Consequences of Rotation: The Coriolis Effect - Video
  22. 22. The Weather Highways Coriolis Effect • Created by the ROTATION of the Earth • Causes the air and water to be pushed to the right north of the equator. • This creates global weather highways • Cut and paste Coriolis Image
  23. 23. The Westerlies• Winds that blow from the west to the east• most of our weather comes from the west• Cut and Paste Global Wind Image
  24. 24. What Weather Should We Expect?
  25. 25. Trade Winds• Winds that blow from the east to the west• These affect the paths of hurricanes
  26. 26. Let’s break for a short review:1.Transfer of heat in liquids or gases_____.2. _____ air is dense and tends to sink.3. Cold air holds _____ moisture than warm air.4. The Coriolis effect causes the air and water vapor to be pushed to the _____ to the North of the equator.
  27. 27. How did you do?1. CONVECTION2. COLD3. LESS4. RIGHT
  28. 28. Cloud in a Bottle Demo
  29. 29. Cloud in a Bottle LabC.H.A.M.P.S. – Group Work, Voice Level 2,Complete Lab, Finger Signals, Jobs1.We will add water to 1/3 of the bottle.2.We will
  30. 30. Let’s Play a Game• Weather Game
  31. 31. Now What?• Ok, so we know that the weather moves around on these highways and that warm air rises and cold air sinks.• But why is it sunny one day, and rainy the next?
  32. 32. Let’s take another look at the weather map:• Notice that there are H’s and L’s on the map• There are also blue lines with spikes and red lines with half circles• Let’s take a closer look!
  33. 33. High and Low Pressure - Video
  34. 34. High Pressure Areas • Cooler air sinks and is warmed • This usually means sunny skies
  35. 35. Low Pressure Areas• When warm air rises and cools• Precipitation and stormy weather
  36. 36. So, if you see a big H on the weather map over the area you live, you can expect fair weather.
  37. 37. When you see a big L in your area, there will probably be stormy weather
  38. 38. Teach Two of Your Neighbors• Action of High Pressure: Push Down on neighbor’s Pressure shoulders and say: – You are a bunch of air molecules. – You’re experiencing a high pressure that doesn’t allow you to rise and make clouds – No clouds means no rain• Action Low Pressure: Let go of his or her shoulders Pressure and say: – You are still a bunch of air molecules. – You’re experiencing a low pressure that allows you to rise and make clouds. – Clouds that fill up with moisture will mean rain.
  39. 39. How do Air and Water Molecules Act Under Pressure• Half the class stand • Now, I’m going to stop outside the square box. adding air and water• Half the class stand inside molecules to the box and the square box. we are going to take the• I’m going to add air and lid off of it. water molecules to box. • Start slowly moving to the• Those outside move to the front of the room. inside. • As you rise to the front,• You are under a lot of what will you do? pressure. • Condense and become• You can’t rise. (no clouds) clouds.
  40. 40. Barometer• Barometers are used by meteorologists to keep track of pressure in the air.
  41. 41. Understanding the Barometer• If you see the barometer pointer moving downward, what does that mean? – The pressure is increasing.• If you see the barometer pointer moving upward, what does that mean? – The pressure is decreasing.
  42. 42. These highs and lows move alongthe jet stream and bring us our weather changes.• Video
  43. 43. Jet Stream• A fast flowing river of air found in the atmosphere at around 12 km above the surface of the Earth.• They form at the boundaries of air masses with large differences in temperature, such as of the polar region and the warmer air to the south.
  44. 44. Jet Stream DemoUsing: Hair Dryer, ping pong ball•The hair dryer shoots a column of air up betweenair that is also in the room.•When I tilt the hair dryer left and right, the pingpong ball stays in the column of air.•Jet streams are columns of air in upperatmosphere.•These weather columns are like currents. Thesecolumns of air move throughout the year.
  45. 45. Fronts and Air Masses • Air mass: a large body of air whose temperature and moisture are fairly similar at a given altitude• Fronts: boundaries separating different air masses • There are four different air masses that affect the United States
  46. 46. Warm and Cold Fronts - Video
  47. 47. Ok, now we see the difference in the air masses • Let’s look at the different fronts and their impact on weather• Can you see the four different types of fronts on the map?
  48. 48. Warm Fronts• A warm front is warm air taking over the cool air• The front edge of warm air must “overrun” cold air• Slow moving
  49. 49. Cold Fronts• Cold air advances Video into region of warm air• Rain and Thunderstorms• Clearing conditions after front passes
  50. 50. Cold Front is Moving In – 5:28• As the warm air was pushed up (low pressure allowed it to rise), the warm air cooled and condensed.• The condensed water vapor (gas) caused clouds, which could not hold as much moisture (water vapor [gas]).• This caused rain and thunderstorms.• What will the weather be like after the cold front passes through?
  51. 51. Stationary Fronts• Surface positions of the front do not move• Often a region of clouds• Neither the cold or the warm front are ‘winning’.
  52. 52. Quiz1. Get out a sheet of paper.2. Spread out around the room.3. C.H.A.M.P.S. • Voice Level of 1 • Come to my desk for help • Quiz • Finger Signals • Complete the Quiz
  53. 53. 1.• What causes a low pressure system to create clouds and sometimes precipitation? L
  54. 54. 2.• What type of front can be found close to point D ?
  55. 55. 3.• Which of these fronts would you expect to have greater precipitation, but be short lived as the front passes?
  56. 56. 4. • Give the name of the air mass that would have the following characteristics: • cool, moist, unstable
  57. 57. 5.That important weather word that refers to the transfer of heat
  58. 58. 6.In general, air near the equator tends to_____ ( rise or fall ).
  59. 59. 7. ________ causes air andwater to be deflected to the right north of the equator.
  60. 60. 8.Which of the weather highways usually controls our weather
  61. 61. 9.Warm air holds ( more or less ) moisture than cold air?
  62. 62. 10.• If there is a big H on the H weather map where you live, would you expect fair or stormy weather?
  63. 63. How did you do?Let’s check the answers!
  64. 64. Answers1. The low pressure allows the warm air to rise. As the warm air rises, it cools. Water vapor cools and condenses into clouds. Cold air can hold less moisture, so eventually it might rain. 8. Westerlies2. Cold front 9. More3. Cold front 10. Fair4. Maritime polar (mP)5. Convection6. Rise7. Coriolis Effect
  65. 65. Predict the Weather Game• Game
  66. 66. Centers• Vocabulary

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