Hailstone Shapes
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Questions and Answers

Which of the following best describes hail?

  • A form of snow precipitation
  • A form of solid ice precipitation (correct)
  • A form of liquid precipitation
  • A form of gas precipitation

    • What causes hail to form?

  • High temperatures
  • Updrafts in thunderstorms (correct)
  • Strong winds
  • Rainfall

    • What size hailstone is considered severe?

  • Golf ball size or larger
  • Tennis ball size or larger
  • Softball size or larger
  • Quarter size or larger (correct)

    • Which shape of hailstone is the most common?

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

    What is the term used to describe the fact that hail usually blows in from a certain direction?

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

    Which direction will suffer the most severe damage on a roof during a hailstorm?

    <p>The direction facing the oncoming hailstorm</p> Signup and view all the answers

    What is the term for damage on surfaces other than the roof caused by hail?

    <p>Collateral damage</p> Signup and view all the answers

    Which of the following is considered 'functional' hail damage to roofing-covering materials?

    <p>Fractures in the shingle mats</p> Signup and view all the answers

    What is the main factor that determines the impact-energy of a hailstone?

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

    Which part of the roofing material is more likely to suffer hail damage?

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

    Which of the following is NOT a recommended safety measure when using a ladder on a roof?

    <p>Leaning backward or sideways while climbing the ladder</p> Signup and view all the answers

    What should you do if your roof is made of slate tiles?

    <p>All of the above</p> Signup and view all the answers

    What is the terminal velocity of a hailstone?

    <p>The fastest speed at which a hailstone can fall</p> Signup and view all the answers

    What is the recommended angle for placing a ladder against a wall or roof?

    <p>75 degrees</p> Signup and view all the answers

    When should you tie the stiles of a ladder to a point with a rope or strap?

    <p>Before climbing up the ladder</p> Signup and view all the answers

    Which of the following factors can affect the severity of hail damage to asphalt shingles?

    <p>The thickness of the asphalt layer</p> Signup and view all the answers

    What constitutes functional damage to the asphalt layer of a shingle?

    <p>A fracture in the mat</p> Signup and view all the answers

    What conditions qualify granule loss as functional damage?

    <p>Granule loss visible to the roof observer</p> Signup and view all the answers

    What affects the amount of granule loss caused by a hail strike?

    <p>The size of the hailstones</p> Signup and view all the answers

    Which of the following best describes the formation of hailstones?

    <p>Hailstones start as raindrops that freeze in colder areas of the cloud</p> Signup and view all the answers

    What is the size of hailstone considered severe?

    <p>Quarter size or larger</p> Signup and view all the answers

    What is the recommended method to measure the size of hailstones?

    <p>Using a ruler or a caliper</p> Signup and view all the answers

    Which of the following is NOT a factor that can affect the severity of hail damage to asphalt shingles?

    <p>The direction from which the hailstorm blows</p> Signup and view all the answers

    What is the term used to describe damage on surfaces other than the roof caused by hail?

    <p>Collateral damage</p> Signup and view all the answers

    Which part of the shingle is in horizontal tension when a hailstone strikes?

    <p>Bottom surface</p> Signup and view all the answers

    What is the term for a shingle fracture that extends through the mat but does not reach the upper surface?

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

    Which of the following is considered 'cosmetic' hail damage to roofing-covering materials?

    <p>Discoloration or minor damage</p> Signup and view all the answers

    What size hailstones have been known to cause severe damage, including puncturing holes in roofs and causing fatal injuries?

    <p>Softball size</p> Signup and view all the answers

    What is the effect of velocity on the impact-energy of a hailstone?

    <p>Higher velocity increases impact-energy</p> Signup and view all the answers

    What is the recommended angle for placing a ladder against a wall or roof?

    <p>45 degrees</p> Signup and view all the answers

    What is the primary factor that determines the severity of hail damage to asphalt shingles?

    <p>The thickness of the asphalt layer</p> Signup and view all the answers

    Which of the following is NOT considered functional damage to the granule layer of a shingle roof?

    <p>Loose granules</p> Signup and view all the answers

    Which of the following variables affects the amount of granule loss caused by a hail strike?

    <p>All of the above</p> Signup and view all the answers

    Which of the following safety measures is NOT recommended when using a ladder on a roof?

    <p>Tying the stiles of the ladder with a rope or strap</p> Signup and view all the answers

    Which of the following is NOT a recommended safety measure when using a ladder on a roof?

    <p>Placing the ladder on a slippery ground</p> Signup and view all the answers

    What is the recommended angle for placing a ladder against a wall or roof?

    <p>75 degrees</p> Signup and view all the answers

    When should you tie the stiles of a ladder to a point with a rope or strap?

    <p>Before using any ladder</p> Signup and view all the answers

    What should you do if your roof is made of slate tiles?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is the correct order of hail sizes, from smallest to largest?

    <p>Pea, Mothball, Penny, Nickel, Quarter</p> Signup and view all the answers

    What is the primary factor that determines the severity of hail damage to roofing materials?

    <p>The size of the hailstones</p> Signup and view all the answers

    What is the recommended method to measure the size of hailstones?

    <p>Using a ruler or a caliper</p> Signup and view all the answers

    What is the term used to describe the damage caused by hailstones that embed the granules deeper into the asphalt?

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

    What is the term for damage caused by hailstones that create a crack starting from the bottom surface of the shingle and spreading towards the top surface?

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

    Which component of asphalt shingles determines their impact resistance?

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

    What is the most common shape of hailstones?

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

    What is the main factor that affects the severity of hail damage to asphalt shingles?

    <p>The size of the hailstones</p> Signup and view all the answers

    Which of the following is NOT considered functional damage to the asphalt layer of a shingle?

    <p>A crack that reaches the upper surface</p> Signup and view all the answers

    What is the effect of wind-driven hail on granule loss?

    <p>It causes more granule loss on older roofs</p> Signup and view all the answers

    What is the term for loose granules on an older shingle roof that can be dislodged even by small hail?

    <p>Pre-existing damage</p> Signup and view all the answers

    What should you do to prevent issues that you may not be able to see while on a ladder?

    <p>Always have a spotter on the ground</p> Signup and view all the answers

    What should you do if your roof is made of slate tiles?

    <p>Use the Pivit tool and roof boot with care</p> Signup and view all the answers

    What safety measure should you take when using an extension ladder?

    <p>Use ladder leveling tools like the Pivit tool and the roof boot</p> Signup and view all the answers

    When should you work from the ladder rather than the roof?

    <p>When the roof is dry</p> Signup and view all the answers

    Which of the following is NOT considered 'cosmetic' hail damage to roofing-covering materials?

    <p>Damage that affects the lifespan of the roofing material</p> Signup and view all the answers

    What is the term used to describe damage that diminishes the ability of a roof to shed water and/or reduces the roof's expected long-term service life?

    <p>Functional damage</p> Signup and view all the answers

    What is the primary factor that determines the severity of hail damage to asphalt shingles?

    <p>The size of the hailstones</p> Signup and view all the answers

    What is the term used to describe the fastest speed at which a hailstone can possibly fall?

    <p>Terminal velocity</p> Signup and view all the answers

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