1. May 23, 2018 You need: Clean paper (2) / pencil
Air masses and Fronts notes
Warm Up:
Mental Math Quiz will begin shortly. Be ready!
I CAN: describe how pressure and heat impact the weather and drive weather events.

2. APRIL 30 Progress reports Teacher workday Swagrrr No 7th test ELA 7
May 2018
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Forces and energy
Magnets 1
Magnets / eclectricity 2
Electricity 3
Catch up 4
Review
Test Assess
MobyMax Milkshakes 5 6 7
Comp of Air
Layers, Water Cycle 9
Atmosphere 10 11 12 13
Mother’s Day 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
No School
Memorial Day 29 30 31
APRIL 30
Progress reports
Teacher workday
Swagrrr
No 7th test
ELA 7
Garris 8am
Math 7
Garris 8am
Math I

3. NCFE Sci Garris (D40) @ 11:30am
June 2018
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday 1
Atmosphere
Locker clean out 2 3 4
6th grade ELA 5
6th gr Math
 8th grade promotion ceremony 6
Faculty vs. Students Basketball
6th gr NCFE 7
8 Last day (due to snow) 9
EOG testing
Busch Gardens
NCFE Sci Garris 11:30am

4. Demo – hand-warmer
Explain the hand-warmer demo Ms.Garris showed.

5. Mixture of Gases in Air All Other Gases Argon = 0.93%
Carbon Dioxide = 0.04%

6. Earth’s atmosphere makes conditions on Earth suitable for living things:
It traps energy from the sun keeping the Earth warm.
The heat also keeps water in liquid form (good for life)
It protects Earth from dangerous radiation and meteor collisions.

7. Let’s make a model!
Write the notes ONTO the correct layer.
Add color to the layers and the pictures.
Cut out the layers and the pictures.
Assemble on your notebook paper.
**Be careful to place them low enough on the page so that they don’t stick out of the top of your binder!!**

8. Air pressure
Air pressure – the result of weight of a column of air pushing down on an area, measured by an instrument known as a barometer.
Barometer = Air pressure

9. Air Pressure at Different Altitudes
Magic Balloon: If I want it to be bigger, should I take it to the mountains or the beach?
Mountains (High altitude)
Sea Level (Low altitude)

10. HEAT TRANSFER

11. UNEVEN HEATING
The uneven heating of the air that causes wind is created not only by different colors on Earth’s surface, but also by:
Different surfaces (grass vs. snow vs. water, etc.)
Pollution in some areas
Different amounts of sunlight due to seasons, clouds, etc.

12. So the wind in the daytime blows TOWARD the beach.
WARMER
COOLER

13. So the wind blows toward the ocean at night.
COOLER
WARMER

14. Climate vs Weather Global vs Local winds
LARGE scale = overall pattern, trend
small scale = daily, weekly, small times
Global vs Local winds
LARGE scale = Over the entire Earth
small scale = tiny area…usually land beside water.

15. Global winds 1 2 3 4 5 Polar easterlies Prevailing westerlies
Horse latitudes 4
Trade winds 5
Equator / Doldrums

16. United States of America

17. Coriolis Effect – the effect on the air caused by the rotation of the earth.

18. Water in the Atmosphere

19. Earth is called the “Water Planet”
71% of the earth’s surface is covered by water.
Water is essential for LIFE on earth.

20. Water Cycle
The movement of water between the atmosphere and earth’s surface is the water cycle.

21. How does water get into the air?
EVAPORATION – is the process where liquid water molecules escape into the air as water vapor.
3 things affect how quickly water evaporates:
1) Temperature
2) Wind
3) Humidity of the air

22. How much water can air hold?
HUMIDITY is the measure of how much water vapor is in the air.
TEMPERATURE affects how much water vapor the air can hold…
Warm Air
Cold Air
holds MORE water vapor.
holds LESS water vapor.
That’s why air feels more “HUMID” on hot days!

23. What is the “Dew Point”?
As air cools, the amount of water vapor it can hold decreases.
At a certain temperature, the water vapor in the air will CONDENSE back into water droplets or ice.
This temperature is the “DEW POINT”.

24. Air Masses & Fronts

25. What is an AIR MASS? WARM COLD WET DRY
An air mass is a huge body of air that influences weather.
Scientists classify air masses based on:
TEMPERATURE and HUMIDITY
WARM
COLD
WET
DRY

26. How are Air Masses named?
WET
DRY
MARITIME
TROPICAL
CONTINENTAL
TROPICAL
WARM
MARITIME
POLAR
CONTINENTAL
POLAR
COLD

27. North American Air Masses
MARITIME POLAR
CONTINENTAL POLAR
MARITIME POLAR
MARITIME TROPICAL
MARITIME TROPICAL
CONTINENTAL TROPICAL

28. How do these air masses move?
MARITIME POLAR
CONTINENTAL POLAR
MARITIME POLAR
Jet Stream
That’s why weather generally moves WEST to EAST
in the U.S.
Jet Stream
Prevailing Westerlies
Prevailing Westerlies
MARITIME TROPICAL
MARITIME TROPICAL
CONTINENTAL TROPICAL

29. What happens when air masses meet?
Air masses don’t mix easily.
The line between air masses is called a front.

30. COLD FRONTS

31. WARM FRONTS

32. Compare/Contrast Chart - Types of Fronts
How it Forms
Type of Weather
Cold
A fast-moving cold air mass overtakes a warm air mass.
Clouds form.
If warm air is humid, rain/snow may fall.
Possible thunderstorms.
Warm Front
A warm air mass overtakes a slow-moving cold air mass.
Scattered clouds.
Light rain or snow.
May last several days.
Stationary Front
Cold and warm air meet, but neither can move the other. Creates “standoff”
Rain, snow, clouds, or fog that may last for days.
Occluded Front
A warm air mass is caught between 2 cooler air masses. Warm air mass is pushed up.
Temperature gets cooler.
Clouds and rain may form.

33. What are CLOUDS? They are made of tiny water droplets or ice crystals.
They form when water condenses onto small particles in the air (like dust).

34. How TINY are the water droplets?

35. How do clouds form? 1) Warm, moist air rises and cools.
3) Water vapor condenses forming a cloud.
2) Air cools to dew point causing condensation.
How do clouds form?

36. Clouds are NOT all the same…

37. Clouds are classified according to SHAPE
Flat clouds =
“Stratus”
Fluffy clouds =
“Cumulus”
Wispy clouds =
“Cirrus”

38. Clouds are also classified by ALTITUDE
On your blue paper, draw the different types of clouds (using chalk and charcoal).
*Use your textbook (pg. 111) and the cloud charts.*
Label each type of cloud.
Paste the paper into your science notebook.
HIGH LEVEL (cirro-)
MID LEVEL (alto-)
LOW LEVEL (stratus)

39. Spot the cloud!
Low and flat …..
STRATUS

40. Spot the cloud!
Middle level,
fluffy …..
Alto-Cumulus

41. Spot the cloud!
High level,
wispy …..
Cirrus

42. Spot the cloud!
Rain bearing,
storm clouds …..
Cumulo-Nimbus

43. Cloud model
Color

44. Cut – on dotted lines (3 sides)
Cloud model
Cut – on dotted lines (3 sides)
You are creating a FLAP!

45. Cloud model
Trace boxes

46. Cloud model
Cut / paste boxes

47. Cloud model
Think / Share / COMPARE

48. Cloud model
Glue…finally

49. Surface Map (Fronts & Precipitation)
Warm Front H
High Pressure
Occluded Front L
Low Pressure
Cold Front
Stationary Front

50. Temperature Map

51. Reading maps
Isobar…lines connecting areas of similar BAR-ometric pressure.
Isotherm…lines connecting areas of similar temperature.

52. H L What will happen to the weather in Little Rock?
Which direction is the warm front moving? L H
12°C
19°C
14°C
20°C
25°C
Tuesday Weather
Little Rock, AR
Clouds & Rain
Warmer = 21°C
Wednesday Weather
Little Rock, AR
Partly Sunny
Warmer = 26°C
Monday Weather
Little Rock, AR
Sun & clear skies
Cool = 15°C
28°C
21°C
26°C
15°C
30°C
Warm Front H
High Pressure
Occluded Front L
Low Pressure
Cold Front
Stationary Front

53. Which direction is the cold front moving?
What will happen to the weather in Nashville?
10°C
8°C
18°C
10°C
11°C
Thursday Weather
Nashville, TN
Partly Sunny
Warm = 20°C
Saturday Weather
Nashville, TN
Sunny
Cool = 10°C
Friday Weather
Nashville, TN
Thunderstorms
Cooler = 15°C
10°C
20°C
15°C
Warm Front H
High Pressure
Occluded Front L
Low Pressure
Cold Front
Stationary Front

54. Emergency ready?
List 5 items that you would pack into an emergency kit for each situation (5 per kit):
Hurricane - ?
Blizzard - ?
Flood - ?

55. Weather maps (CIBL)

62. Weather map

63. Weather Station Model Why not write it out in a paragraph?
How can we use symbols to help?

64. H A C Check the visual for Station # 1. Temp = A = 52 deg F
Wind direction = WEST H A
Wind speed = 20 knots
Temp = A = 52 deg F C
Dew Point = C = 46 deg F
Barometric Pressure = H = 064 millibars

65. Please list the FIVE most important things to have in an emergency weather preparedness kit.
What type of emergency weather?
For myself or a larger group?
For a few hours or for many days?
What were the reasons for today’s delay?
Let’s watch and see if we might have similar concerns to these Storm Stories.
We watched the Storm Stories episode labeled “Ice Storm” which highlighted a tornado but then went to a different story of a Canadian ice storm. Students may note that the ice was FOUR inches thick – not snow, but ice. Would it help to have a car? What dangers were faced? Did you notice that after powerlines collapsed – it looked a bit like Puerto Rico did after the fall hurricane season? Where could they go if they left their houses? If they come to the United States, are we using our tax money to help? Did they pay tax money to us?