Marking Scheme New Update (A+
Pass)
what are symptoms of hypothermia - Answers -sluggishness, confusion, shivering,
yawning
heat emergencies - Answers -heat exhaustion and heat stroke
treatment is to cool the person down
ditty bag - Answers -a small bag that carries tools, knifes, spare parts, whistle, extra
line, and other useful parts, pieces and safety devices in a small pouch
1 knot=
10 knots= - Answers -1.1 mph
11 mph
wind velocity - Answers -speed of the wind
lull - Answers -decrease velocity of wind
puff - Answers -increase velocity of wind
wind speed knots:
light wind
medium wind
heavy wind
very heavy wind
severe heavy wind - Answers -light wind: 0-10
medium wind: 11-16
heavy wind: 17-21
very heavy wind: 22-27
severe heavy wind: 28-47
lift - Answers -winds direction shifts from the bow toward the stern
header - Answers -wind shift towards the bow
clocking wind - Answers -wind that consistently shifts in a clockwise direction
backing wind - Answers -wind that shifts in a consistently counterclockwise direction
, true wind - Answers -meteorological weather stations are always stationary, which
allows them to record accurate readings of the true wind direction and velocity
you get the true wind velocity by staying in one place
apparent wind - Answers -the altered wind direction and velocity, which is different from
the true wind direction because the motion of the weather station
boats always sail in apparent wind
what are some clues to weather change - Answers -wind direction
cloud patterns
falling temperatures
cumulus clouds - Answers -large, white, and fluffy
often an indicator of good weather
cirrus clouds - Answers -wispy, thin
usually means good weather for the day but may be a prediction that a change in
weather is on the way
cumulonimbus clouds - Answers -thunderheads, big poofy clouds
accompanied by severe weather including heavy rain and lightning
stratus clouds - Answers -low layered, stripes but thin cloud
usually brings steady rain
wind shadow - Answers -areas of less wind
thermal wind - Answers -when denser cool air is drawn towards rising warm air, wind is
created
tides - Answers -the vertical movement of water caused by the gravitational pull of the
earth and the moon
most fresh water lakes dont have tides
ebbing tide - Answers -a tide that is going out or dropping
flooding tide - Answers -an incoming tide
slack tide - Answers -the period in between a ebbing and flooding tide with very little
water movement
current - Answers -horizontal flow of water and is described in terms of the direction and
speed the water is moving
it is affected by water depth
deep water will increase the speed of the current or tide
shallow water will reduce the velocity of the current