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Flashcards in 12. Weather and Boating Deck (25)
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Condition favoring fog formation is

Moisture laden air

1

Temperature Behind a cold front is

Lower than in front of it

2

Air pressure behind a cold front is

Higher than in front of it

3

Majority of weather systems in the US come from

Westerly direction

4

Best source of marine boating weather is

National weather service

5

Northern hemisphere winds flow around into a low in what direction

Counterclockwise

6

Warm air

Rises

7

Warm moist air compared to dry cool air is

Lighter

8

Back to surface wind-turn 45 degrees to your right - low pressure area is

To your left

9

High pressure air mass is characterized by

Cool dry air

10

Fastest moving fronts are usually

Cold fronts

11

A hurricane is a tropical storm with sustained winds

64 knots or greater

12

A tropical cyclone is

Low pressure area over warm tropical waters

13

Clouds from which rain is falling are called

Nimbus

14

Main problem in thunderstorms tornadoes etc

Wind

15

Which of the following provides the most serious threat to boaters

Wind

16

The height of wind created waves depends on

How long wind is blowing, extent of the fetch, strength of the wind

17

Fog occurs most often near a

Warm front

18

Fronts are named for the kind of air that is

Behind them

19

Thunderstorms form ahead of

Cold fronts

20

On a colored weather map warm fronts are

Red

21

Weather is caused by

Heat

22

Thunderstorms are produced by

Cumulonimbus clouds

23

Clouds in front of a warm front are

Stratus and cirrus

24

A particularly dangerous phenomenon that can occur several miles away from a thunderstorm and a squall line is a

microburst