PCOC Weather and Environmental Factors 3

Question 1

What does a red sky in the morning typically warn mariners about?

Accepted Answer

Possible deteriorating weather ahead

Answer

Clear weather for the full day

Answer

A high-pressure ridge approaching

Answer

Fog expected later in the morning

Question 2

Which of the following is a safe action when a sudden storm catches you on the water?

Accepted Answer

Head directly into the wind and waves at a safe angle

Answer

Increase speed to outrun the storm

Answer

Anchor in the deepest water available

Answer

Raise an antenna to monitor broadcasts

Question 3

When a small craft advisory is issued by the National Weather Service, it means:

Accepted Answer

Winds of 21–33 knots and/or dangerous wave heights are forecast

Answer

Gale-force winds above 48 knots are expected

Answer

Fog will reduce visibility below 1 nautical mile

Answer

A tropical storm watch has been issued

Question 4

What does the term 'wind chill' mean in the context of boating safety?

Accepted Answer

The combined effect of wind and cold temperature making it feel colder

Answer

The cooling effect of evaporating water on the hull

Answer

A reduction in engine power due to cold air intake

Answer

The rate at which seawater temperature drops in autumn

Question 5

Which source provides the most reliable, up-to-date marine weather forecasts for U.S. waters?

Accepted Answer

NOAA Weather Radio and official NWS marine forecasts

Answer

A personal smartphone weather app

Answer

Local television news

Answer

Wind speed estimates from experienced dock staff

Question 6

What is a 'gust front' in the context of thunderstorm hazards?

Accepted Answer

A surge of cold air that rushes outward ahead of a thunderstorm

Answer

A line of debris floating ahead of a flood current

Answer

The boundary between salt and fresh water near a river mouth

Answer

High waves generated by a distant storm system

Question 7

How does high humidity affect the risk of hypothermia for boaters?

Accepted Answer

High humidity combined with wind accelerates heat loss from the body

Answer

High humidity reduces hypothermia risk by warming the air

Answer

Humidity has no effect on body heat loss

Answer

High humidity only affects swimmers, not passengers