Defogging Techniques for Underwater Masks and Canoeing History
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Questions and Answers

What is the purpose of the mask skirt?

  • To remove water from the mask
  • To hold the mask to the face
  • To seal the mask around the face (correct)
  • To provide a cushion for the nose

    • Which type of snorkel has a purge valve to remove water?

  • Classic snorkel (correct)
  • Dry valve snorkel
  • Snorkel with flexible tubes
  • Snorkel with splash guard

    • What is the function of a snorkel's dry valve?

  • To hold the mouthpiece in place
  • To prevent splashed water from entering
  • To stop water from entering when submerged (correct)
  • To rotate to different angles

    • Which equipment helps in breathing at the surface while submerged?

    <p>Snorkel</p> Signup and view all the answers

    What does the flexible tube on a snorkel allow it to do?

    <p>Rotate to different angles</p> Signup and view all the answers

    What does a snorkeling fin do?

    <p>&quot;Pushes back&quot; anything moving through it</p> Signup and view all the answers

    What is the reason why boats and people float on water?

    <p>Buoyancy</p> Signup and view all the answers

    Which characteristic of water helps in transferring heat away from the body much more quickly than air?

    <p>Enhance cooling</p> Signup and view all the answers

    What is the main benefit of hydrostatic pressure combined with buoyancy in water?

    <p>Keeps standing balance in water</p> Signup and view all the answers

    Why is snorkeling beneficial for overall fitness according to the text?

    <p>Works out the quadriceps, hamstrings, calves, and more</p> Signup and view all the answers

    Which activity allows a person to observe underwater attractions for a longer period without constantly resurfacing for air?

    <p>Snorkeling</p> Signup and view all the answers

    What provides a weightless feeling and makes it easier to move, lift knees, or jog in water?

    <p>Buoyancy</p> Signup and view all the answers

    What is the purpose of a yoke in a canoe?

    <p>To allow the canoe to rest on a person's shoulder when portaging</p> Signup and view all the answers

    Which part of a canoe is known as the 'rear end'?

    <p>Stern</p> Signup and view all the answers

    What do gunwales do in a boat?

    <p>Act as structural support and define the shape of the boat</p> Signup and view all the answers

    Which tribe originated the word 'kayak' meaning 'man's boat' or 'hunter's boat'?

    <p>Inuit and Aleut</p> Signup and view all the answers

    What is the significance of the Pesse Canoe?

    <p>It was found in the Netherlands and believed to be constructed between 8200 and 7600 B.C.</p> Signup and view all the answers

    What equipment is used to maneuver a boat?

    <p>Paddles</p> Signup and view all the answers

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