ATSC 113 Final Study Questions and Answers All Correct
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Course
ATSC 113
Institution
ATSC 113
ATSC 113 Final Study Questions and Answers All Correct
Two types of wind to consider when dealing with swell are: - Answer- Onshore and offshore wind.
Onshore winds blow in what direction and have what effect? - Answer- Onshore winds blow from the ocean to shore, and can reduce wave steepnes...
ATSC 113 Final Study Questions
and Answers All Correct
Two types of wind to consider when dealing with swell are: - Answer- Onshore and
offshore wind.
Onshore winds blow in what direction and have what effect? - Answer- Onshore winds
blow from the ocean to shore, and can reduce wave steepness.
Offshore winds blow in what direction and have what effect? - Answer- Offshore winds
blow from the shore to ocean, and slow the speed of waves.
How can tide affect how swell breaks on the shore? - Answer- Tide changes the place
where the water meets land, changing the contours of the shallow water where swell
breaks into breakers.
Describe swell refraction. - Answer- Area of swell hits an area of shallower water (reef,
rock, etc) and experiences drag. Rest of swell curves around this area experiencing
drag.
Swell with ________ wave periods will refract more than swell with __________ wave
period. - Answer- Longer, shorter.
Swell decay: - Answer- How quickly waves lose energy as they travel from their initial
source.
What factors are important when deciding how swell will break on a beach? - Answer-
Local conditions, swell height/period, swell direction.
What factor isn't important when deciding how swell will break on a beach? - Answer-
Great circle routes.
What factor doesn't influence how swell will decay? - Answer- Surface water.
True or false: Offshore winds blow from the ocean onto the shore, creating chop on the
incoming swell. - Answer- False.
Tide: - Answer- Movement of Earth's oceans up and down due to gravitational pull of
moon/sun.
, Spring tide: - Answer- Sun and moon line up, creating higher and lower tides than usual.
Neap tide: - Answer- Weaker tides when sun and moon are at right angles to each
other.
How many tide cycles will you encounter per day? - Answer- Two (So two high tides
and two low tides. )
Tidal range: - Answer- Difference between highest tide and lowest tide.
Flood current: - Answer- Current created by incoming tide.
Ebb current: - Answer- Current created by outgoing tide.
Tidal currents are stronger: - Answer- Mid channel, or in deeper water.
Seas are calmer when tidal current and wind: - Answer- Travel together.
Tidal rapids: - Answer- When tidal currents forced through narrow corridor.
Environment Canada broadcasts warnings and forecasts for the Pacific. This is called: -
Answer- The Continuous Marine Broadcast (CMB).
CMB can be accessed by what type of radio? - Answer- VHF radio.
Which product is NOT usually included in Environment Canada's weather forecasts? Of
these options:
7 Day Forecast
2 Day Forecast
Weather Conditions
Weather Warnings
Links to weather resources: - Answer- 7 day forecast.
Air pressure is ________and its unit is: - Answer- Weight of air over ground, unit is
kilopascal.
Cold fronts on weather map denoted by: - Answer- Blue line with blue triangles.
Warm front on weather map denoted by: - Answer- Red line with red half circles.
Occluded front on weather map denoted by: - Answer- Solid purple line with alternating
triangles and half circles.
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