Exam Revision Flashcards
(40 cards)
Fuel used in Trangia stove.
Metho.
Parks of the mask and snorkel.
Frame, skirt, strap, lens, purge valve, nose pocket, strap buckles, strap.
Communications signals.
Ok? Or OK! (On surface), OK? Or OK! (One are occupied)
Help! Emergency (waving arm), stop ✋🏽 (hand up), 👌🏽 OK?
Material of wetsuits.
Neoprene.
Benefits of a wetsuit.
Help floatation, protection from cold, minimise the chance of hyperthermia.
Equalisation
The ability of descending in the water bringing a build up of pressure. Then applying 1 of 2 techniques to equalise the pressure in your ears.
Two methods of equalising.
Holding ones nose and blowing out gently, swallowing whilst pinching the nose.
Describe the Dive Flag.
Used to notify people that there are a group of people snorkelling in that area. It is white and blue.
What are the best conditions for snorkelling?
Cirrus clouds (clear sky), sunny day.
Why do we have buddy systems?
To ensure people don’t drift away by themselves. If someone needs to return to shore the buddy must go too.
Positive, Negative and Neutral buoyancy.
Positive buoyancy- floating or swimming towards the surface.
Negative buoyancy - descending in the water.
Neutral buoyancy - when you are balanced in the water.
3 steps on duck diving while snorkelling.
Dive to negative buoyancy, then to a balanced buoyancy before rising to a positive buoyancy after the wave has passed.
3 factors of swell conditions.
Intensity of the wind, length of time, distance the wind blows.
3 times of waves.
Plunging/ dumping waves - strong force
Spilling waves - safe waves good for surfers.
Surging - most dangerous, never break
Why do waves break?
Shallow water, the slope of the sea bed.
Parts of the wave.
Crest (back of the wave), lip (top of the wave), face, trough (bottom of the wave).
Littoral Current.
Flows parallel and close to shore, split into two rips.
Rips.
A body of water moving out to sea that do not pull you under the water.
Signs of a rip.
Discoloured brown water. Foam on the surface. Waves breaking further out. Rippled appearance. Debris floating seaward.
What are 2 aided rescues.
Foam tube rescues, surfboard rescues.
Spring tides (strong)
- when the full moon is new or full, the high tides are very high and the low tides are very low.
Neap tide (weak)
Considered as weak tides and are much closer together.
How can you predict changes in the weather.
Air Pressure (high/low)
Clouds (different types)
Red sky
Animals
Packing a rucksack.
Heavy items above hips, then as a rainbow effect the items should get lighter and lighter as it fills to the top.
Lightest items at the top.m
