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Science - 8th > Weather Maps Notes > Flashcards

Weather Maps Notes Flashcards

1
Q

Atmospheric Pressure

-Pressure caused by the ___________of air above an area.

A

Weight

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2
Q

Atmospheric Pressure

-Pressure __________ with increasing height above Earth.

A

Decreases

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3
Q

Atmospheric Pressure

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

A

14.7 pounds

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4
Q

Air Pressure is measured with a barometer in _________.

A

Millibars

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5
Q

Air Pressure

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

A

Millibars
79.92

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6
Q

Air Pressure

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

A

High, greater

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7
Q

Air Pressure

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

A

Low, less

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8
Q

High Pressure

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

More dense, clockwise

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9
Q

Low Pressure

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

A

Less dense, counter clockwise

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10
Q

Is this a high or low pressure weather example:

Sunny, cloudy skies

A

High Pressure

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11
Q

Is this a high or low pressure weather example:

Cloudy, stormy skies

A

Low Pressure

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12
Q

Is this a high or low pressure weather example:

Calm wind, spiral clockwise

A

High pressure

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13
Q

Is this a high or low pressure weather example:

Cool dry air

A

High Pressure

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14
Q

Is this a high or low pressure weather example:

Strong winds counter clockwise

A

Low pressure

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15
Q

Is this a high or low pressure weather example:

Warm moist air

A

Low pressure

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16
Q

Is this a high or low pressure weather example:

Higher than normal 30.5 Hg

A

High pressure

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17
Q

Is this a high or low pressure weather example:

Lower than normal 28.9 Hg

A

Low pressure

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18
Q

Isobars

A line connecting points of equal ___________ ____________.

A

Air pressure

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19
Q

Isobars

Measured in ______________ mb

A

Millibars

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20
Q

Isobars

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

A

.02953

21
Q

Low Pressure in Storms:

______________ 25.17 Hg mb.

A

Tornadoes

22
Q

Low Pressure in storms:

__________ 26.05 Hg mb

A

Hurricanes

23
Q

Air masses

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

A

Temperature and Humidity

24
Q

Air Masses

-Originate over land ______________

A

Continental

25
Q

Air Masses

-Originate over land continental, over water ___________.

A

Maritime

26
Q

Air Masses

-Cold air masses tend to approach from _____________.

A

North, North West, West

27
Q

Air Masses

-Warm air masses tend to approach from _____________.

A

South, South East, East

28
Q

Frontal Movement

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

A
29
Q

Frontal Movement

-___________ pressure areas move into ___________ pressure areas.

A

High
Low

30
Q

Front

-The boundary between ________ air masses.

A

Two

31
Q

Front

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

A

?

32
Q

Front

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

A

Moving

33
Q

Cold Front

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

A

Replacing

34
Q

Cold Front

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

A

Dryer, increases

35
Q

Cold Front

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

A

Cold
Showers and Thunderstorms

36
Q

Warm Front

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

Cold
Warm and humid
Down

37
Q

Warm Front

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

A

Cold

38
Q

Warm Front

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

A

Precipitation

39
Q

Stationary Front

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

Strong
Rain

40
Q

Occluded Front

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

A

Warm

41
Q

Occluded Front

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

A

Warm
Cold

42
Q

Occluded Front

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

A
43
Q

-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.

A

Back door
Warmer

44
Q

__________________ measures atmospheric pressure in Hg.

A
45
Q

Anemometer

A

________ measures wind speed in Km

46
Q

Thermometer

A

___________ measures temperature in C and F

47
Q

____________ carries instruments to high altitudes.

A

Weather balloon

48
Q

________ helps determine wind direction on weather maps.

A

Compass rose

Science - 8th (5 decks)

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