Transcript wind 2.28 - WordPress.com

2/28
L.T. I can explain how air pressure
changes the weather.
DO NOW:
What are 3 things that effect weather?
HW: Pressure section 2 in workbooks
(Follow Agenda!)
WIND!
Wind: the horizontal movement (compared with earth’s surface)
of air in the atmosphere
Anemometer: a weather instrument used to measure wind speed
Wind Vane: an instrument that spins in the wind and points to the
direction the wind is blowing from, which is the wind direction name
[ORIGIN from Greek anemos ‘wind’]
[ORIGIN from Greek baros ‘weight’]
Follow Ms. Ware and tell me
what her wind name would be?
Follow Ms. Ware and tell me
what her wind name would be?
In a high pressure area,
air will (rise, sink)
because the air is
(less, more) dense.
This is because the air is
(cold, warm)
and (rises, sinks).
Therefore, clouds CANNOT form.
In a low pressure area,
air will (rise, sink)
because the air is
(less, more) dense.
This is because the air is
(cold, warm)
and (rises, sinks).
Therefore, clouds are
LIKELY to form.
Correctly draw the direction of wind flow
around both a high and a low pressure area
in the NORTHERN HEMISPHERE.
low
pressure
warm or cold air
air rising or sinking
clouds or no clouds
clockwise or
counterclockwise wind
direction
winds toward or
away from the center
high
pressure
On the diagrams below, label which one represents a
land breeze and which represents a sea breeze.
Correctly label on each diagram where the
high and low pressure areas would be found.
On the diagrams below, label which one represents a
land breeze and which represents a sea breeze.
Correctly label on each diagram where the
high and low pressure areas would be found.
On the diagrams below, label which one represents a
land breeze and which represents a sea breeze.
Correctly label on each diagram where the
high and low pressure areas would be found.
How to convert pressure from
millibars to inches…
USE YOUR CHART!!
Millibars (mb) = 1 mb per line
Inches (inches of mercury)= .01
inches
DO NOW: make sure this is in your notebooks!!!!!
If you want to abbreviate millibars
Step 1: Drop the 9 or 10 in the front
Step 2: Get rid of the decimal
Ex. 1013.6 => 136
or 998.4 => 984
If you want to change the abbreviation to the actual measurement
Step 1: If the number is lower than 500, add
a 10 and replace the decimal
Step 2: If the number is higher than 500,
add 9 and add the decimal
Ex. 348 => 1034.8
978 => 997.8
Practice!!!
Abbreviate
These…
1036.0
1009.0
Answer
360
090
993.3
Find the
original amt.
029
934
1002.9
993.4
099
933
999.0
Answer
990
1009.9
993
999.3
987.5
875
034
1003.4
1029.5
295
005
1000.5
Agenda:
1.) Do Now: 5 minutes
2.) Review pressure/ fronts: 15
mins
3) Lab: 60 mins
What’s the relationship
between wind and waves?
Using the chart on page 14, state the prevailing
wind direction for each latitude below:
45°N
45°S
75°N
20°N