Weather Maps Notes

Question 1

Atmospheric Pressure

-Pressure caused by the ___________of air above an area.

Answer 1

Weight

Question 2

Atmospheric Pressure

-Pressure __________ with increasing height above Earth.

Answer 2

Decreases

Question 3

Atmospheric Pressure

-A square inch of column of air weighs ________ pounds.

Answer 3

14.7 pounds

Question 4

Air Pressure is measured with a barometer in _________.

Answer 4

Millibars

Question 5

Air Pressure

-Average barometric pressure at sea level is 1013.25 _________ or ___________ inches of mercury.

Answer 5

Millibars
79.92

Question 6

Air Pressure

-_________ pressure - cold dense air that creates __________ pressure on the barometer.

Answer 6

High, greater

Question 7

Air Pressure

-____________ pressure- warm air is less dense creating ________ pressure on the barometer.

Answer 7

Low, less

Question 8

High Pressure

• As air cools, it becomes __________ __________ and sink toward the Earth’s surface spinning __________.

Answer 8

More dense, clockwise

Question 9

Low Pressure

-As air warms, it becomes __________ __________ and rises above the Earth’s surface spinning ____________.

Answer 9

Less dense, counter clockwise

Question 10

Is this a high or low pressure weather example:

Sunny, cloudy skies

Answer 10

High Pressure

Question 11

Is this a high or low pressure weather example:

Cloudy, stormy skies

Answer 11

Low Pressure

Question 12

Is this a high or low pressure weather example:

Calm wind, spiral clockwise

Answer 12

High pressure

Question 13

Is this a high or low pressure weather example:

Cool dry air

Answer 13

High Pressure

Question 14

Is this a high or low pressure weather example:

Strong winds counter clockwise

Answer 14

Low pressure

Question 15

Is this a high or low pressure weather example:

Warm moist air

Answer 15

Low pressure

Question 16

Is this a high or low pressure weather example:

Higher than normal 30.5 Hg

Answer 16

High pressure

Question 17

Is this a high or low pressure weather example:

Lower than normal 28.9 Hg

Answer 17

Low pressure

Question 18

Isobars

A line connecting points of equal ___________ ____________.

Answer 18

Air pressure

Question 19

Isobars

Measured in ______________ mb

Answer 19

Millibars

Question 20

Isobars

-One mb. Is equal to _________ inches of mercury.

Answer 20

.02953

Question 21

Low Pressure in Storms:

______________ 25.17 Hg mb.

Answer 21

Tornadoes

Question 22

Low Pressure in storms:

__________ 26.05 Hg mb

Answer 22

Hurricanes

Question 23

Air masses

-Large body of air that has relatively uniform _____________ and _______________.

Answer 23

Temperature and Humidity

Question 24

Air Masses

-Originate over land ______________

Answer 24

Continental

Question 25

Air Masses -Originate over land continental, over water ___________.

Answer 25

Maritime

Question 26

Air Masses -Cold air masses tend to approach from _____________.

Answer 26

North, North West, West

Question 27

Air Masses -Warm air masses tend to approach from _____________.

Answer 27

South, South East, East

Question 28

Frontal Movement -Cooler air masses __________ are more dense and flow toward areas that are __________ dense, warm and _________.

Question 29

Frontal Movement -___________ pressure areas move into ___________ pressure areas.

Answer 29

High Low

Question 30

Front -The boundary between ________ air masses.

Answer 30

Two

Question 31

Front -Classified by which type of air mass (cold or warm) is replacing the other.

Answer 31

?

Question 32

Front -Map Symbols point in the direction the front is ________.

Answer 32

Moving

Question 33

Cold Front -A cold air mass is ____________________ a warm air mass.

Answer 33

Replacing

Question 34

Cold Front -Air behind the front is colder and _______. Pressure _______.

Answer 34

Dryer, increases

Question 35

Cold Front -Moist air is pushed up over the _________ air. _________ and __________ form along leading edge of front.

Answer 35

Cold Showers and Thunderstorms

Question 36

Warm Front - A warm air mass is replacing a _______ air mass. Air behind the front is ______ and ______. Pressure goes ______.

Answer 36

Cold Warm and humid Down

Question 37

Warm Front -Slow moving, gradual rise of warm air over ________ air.

Answer 37

Cold

Question 38

Warm Front -Widespread, continuous _____________ occurs along and ahead of the front.

Answer 38

Precipitation

Question 39

Stationary Front - A boundary between two different air masses, neither is _______ enough to replace the other. Light _______ over several days.

Answer 39

Strong Rain

Question 40

Occluded Front -Two cold air masses converge on a __________ air mass.

Answer 40

Warm

Question 41

Occluded Front -Occurs when a fast moving cold front overtakes a ________ front pushing it up and over _______ air.

Answer 41

Warm Cold

Question 42

Occluded Front -_______________ form along the front. After frontal passage the sky is ___________ and ___________.

Question 43

-Approaches from the east and northeast. The term _____________ is most commonly used in the northeast U.S. when cool Atlantic maritime air moves in from the east and replaces ___________ continental air.

Answer 43

Back door Warmer

Question 44

__________________ measures atmospheric pressure in Hg.

Question 45

Anemometer

Answer 45

________ measures wind speed in Km

Question 46

Thermometer

Answer 46

___________ measures temperature in C and F

Question 47

____________ carries instruments to high altitudes.

Answer 47

Weather balloon

Question 48

________ helps determine wind direction on weather maps.

Answer 48

Compass rose