ThatQuiz Test Library Take this test now
How to build a small raft or flotation aid
Contributed by: Roe
  • 1. What is the primary goal when building a small raft or flotation aid?
A) Being easily transportable while submerged
B) Looking aesthetically pleasing
C) Achieving buoyancy and stability
D) Having a comfortable seat
  • 2. Which material is generally NOT suitable for providing buoyancy?
A) Sand
B) Sealed plastic bottles
C) Dry logs
D) Inflatable bladders
  • 3. What is the purpose of lashings in raft construction?
A) To provide decoration
B) To securely bind materials together
C) To add extra weight
D) To repel water
  • 4. A stable raft should have a low center of ______.
A) Gravity
B) Pressure
C) Buoyancy
D) Mass
  • 5. What is the best type of knot for lashing logs together?
A) Figure eight knot
B) Overhand knot
C) Square knot or clove hitch
D) Bowline
  • 6. What is a potential danger of using only small, individual flotation devices?
A) They can easily detach or shift
B) They are always too heavy
C) They never provide enough lift
D) They are too buoyant
  • 7. Why is it important to distribute weight evenly on the raft?
A) To look more symmetrical
B) To make it easier to paddle
C) To protect the materials
D) To maintain stability and prevent capsizing
  • 8. What is a good strategy for testing the raft's buoyancy?
A) Throwing rocks on it from a distance
B) Ignoring the test and hoping for the best
C) Gradually adding weight in shallow water
D) Immediately jumping on in deep water
  • 9. Which of these factors most significantly impacts the amount of weight a raft can support?
A) The color of the materials used
B) The builder's strength
C) The volume and buoyancy of the flotation material
D) The length of the lashings
  • 10. What should you do if the raft starts to lean excessively to one side?
A) Shift your weight to the opposite side
B) Start paddling harder on the leaning side
C) Ignore it and hope it corrects itself
D) Jump off immediately
  • 11. What is a good natural material to use for lashing?
A) Strong vines or rope
B) Loose soil
C) Dry leaves
D) Small pebbles
  • 12. If using inflatable items, what is crucial to consider?
A) Overinflating them for maximum buoyancy
B) Their color coordination
C) Ensuring they are properly sealed and inflated
D) Leaving them partially deflated
  • 13. What is a 'sheer lashing' used for?
A) Holding poles or logs side by side
B) Anchoring the raft
C) Attaching a sail
D) Creating a decorative border
  • 14. What consideration is most important when choosing logs?
A) That they have a pleasant smell
B) That they are very heavy
C) That they are dry and lightweight
D) That they are freshly cut and green
  • 15. Why should you avoid using rotten wood?
A) It is too heavy
B) It lacks structural integrity and buoyancy
C) It is difficult to lash
D) It attracts insects
  • 16. What is a disadvantage of using only air-filled items for buoyancy?
A) They are always difficult to inflate
B) They are vulnerable to punctures
C) They are too heavy to carry
D) They are naturally unstable
  • 17. Which safety precaution is most important when using a raft?
A) Knowing how to swim
B) Wearing bright clothing
C) Having a large supply of food
D) Wearing a personal flotation device (PFD)
  • 18. What is the term for the ability of an object to float?
A) Buoyancy
B) Gravity
C) Weight
D) Density
  • 19. How can you increase the stability of a small raft?
A) Make it taller
B) Use more pointed materials
C) Reduce the overall size
D) Widen the base
  • 20. What is a potential hazard when using a raft near a river?
A) Strong currents and underwater obstacles
B) Lack of sunlight
C) Extreme temperatures
D) Overpopulation of fish
  • 21. What is a key factor in choosing a location to build the raft?
A) Proximity to materials and water source
B) Far away from the water
C) A crowded area
D) A very steep hill
  • 22. When using plastic bottles, what is important to ensure?
A) They are crushed
B) They are all the same color
C) They are filled with water
D) They are tightly sealed with air inside
  • 23. What is the best way to protect your feet on a raft?
A) Wrap your feet in leaves
B) Wear sturdy shoes or sandals
C) Go barefoot for better grip
D) Wear socks only
  • 24. What should you do if the lashing starts to loosen?
A) Add more weight to the raft
B) Cut it off
C) Ignore it and hope it holds
D) Retighten it immediately
  • 25. What is an important tool to have for raft building?
A) A calculator
B) A knife or sharp cutting tool
C) A pillow
D) A paintbrush
  • 26. What is the primary purpose of a flotation aid?
A) To travel long distances
B) To provide shelter from the sun
C) To carry heavy cargo
D) To help a person stay afloat in water
  • 27. Which of these is NOT a suitable material for constructing the frame of a small raft?
A) Logs
B) Flexible branches
C) Bamboo
D) Strong wooden poles
  • 28. When choosing a body of water to test your raft, what is the safest option?
A) A shallow, calm area
B) The open ocean
C) A waterfall
D) A fast-flowing river
  • 29. What type of knot is best for creating a loop that won't slip?
A) Granny knot
B) Square knot
C) Bowline
D) Overhand knot
  • 30. Why is it important to remove sharp edges or splinters from the raft's construction?
A) To make it more aerodynamic
B) To reduce its weight
C) To improve its appearance
D) To prevent injuries
Created with That Quiz — a math test site for students of all grade levels.