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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

high 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

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 frontStep 2: Get rid of the decimal

Ex. 1013.6 => 136or 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 => 1034.8978 => 997.8

Practice!!!AbbreviateThese…

Answer Find the original amt.

Answer

1036.0 029

1009.0 934

993.3 099

999.0 993

987.5 034

1029.5 005

360

090

933

990

875

295

1002.9

993.4

1009.9

999.3

1003.4

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