57 Questions
Which of the following best describes hail?
A form of solid ice precipitation
What causes hail to form?
Updrafts in thunderstorms
What size hailstone is considered severe?
Quarter size or larger
Which shape of hailstone is the most common?
Spherical
What is the term used to describe the fact that hail usually blows in from a certain direction?
Directionality
Which direction will suffer the most severe damage on a roof during a hailstorm?
The direction facing the oncoming hailstorm
What is the term for damage on surfaces other than the roof caused by hail?
Collateral damage
Which of the following is considered 'functional' hail damage to roofing-covering materials?
Fractures in the shingle mats
What is the main factor that determines the impact-energy of a hailstone?
Size
Which part of the roofing material is more likely to suffer hail damage?
Edges
Which of the following is NOT a recommended safety measure when using a ladder on a roof?
Leaning backward or sideways while climbing the ladder
What should you do if your roof is made of slate tiles?
All of the above
What is the terminal velocity of a hailstone?
The fastest speed at which a hailstone can fall
What is the recommended angle for placing a ladder against a wall or roof?
75 degrees
When should you tie the stiles of a ladder to a point with a rope or strap?
Before climbing up the ladder
Which of the following factors can affect the severity of hail damage to asphalt shingles?
The thickness of the asphalt layer
What constitutes functional damage to the asphalt layer of a shingle?
A fracture in the mat
What conditions qualify granule loss as functional damage?
Granule loss visible to the roof observer
What affects the amount of granule loss caused by a hail strike?
The size of the hailstones
Which of the following best describes the formation of hailstones?
Hailstones start as raindrops that freeze in colder areas of the cloud
What is the size of hailstone considered severe?
Quarter size or larger
What is the recommended method to measure the size of hailstones?
Using a ruler or a caliper
Which of the following is NOT a factor that can affect the severity of hail damage to asphalt shingles?
The direction from which the hailstorm blows
What is the term used to describe damage on surfaces other than the roof caused by hail?
Collateral damage
Which part of the shingle is in horizontal tension when a hailstone strikes?
Bottom surface
What is the term for a shingle fracture that extends through the mat but does not reach the upper surface?
Bruise
Which of the following is considered 'cosmetic' hail damage to roofing-covering materials?
Discoloration or minor damage
What size hailstones have been known to cause severe damage, including puncturing holes in roofs and causing fatal injuries?
Softball size
What is the effect of velocity on the impact-energy of a hailstone?
Higher velocity increases impact-energy
What is the recommended angle for placing a ladder against a wall or roof?
45 degrees
What is the primary factor that determines the severity of hail damage to asphalt shingles?
The thickness of the asphalt layer
Which of the following is NOT considered functional damage to the granule layer of a shingle roof?
Loose granules
Which of the following variables affects the amount of granule loss caused by a hail strike?
All of the above
Which of the following safety measures is NOT recommended when using a ladder on a roof?
Tying the stiles of the ladder with a rope or strap
Which of the following is NOT a recommended safety measure when using a ladder on a roof?
Placing the ladder on a slippery ground
What is the recommended angle for placing a ladder against a wall or roof?
75 degrees
When should you tie the stiles of a ladder to a point with a rope or strap?
Before using any ladder
What should you do if your roof is made of slate tiles?
All of the above
Which of the following is the correct order of hail sizes, from smallest to largest?
Pea, Mothball, Penny, Nickel, Quarter
What is the primary factor that determines the severity of hail damage to roofing materials?
The size of the hailstones
What is the recommended method to measure the size of hailstones?
Using a ruler or a caliper
What is the term used to describe the damage caused by hailstones that embed the granules deeper into the asphalt?
Bruise
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?
Fracture
Which component of asphalt shingles determines their impact resistance?
Mat
What is the most common shape of hailstones?
Spherical
What is the main factor that affects the severity of hail damage to asphalt shingles?
The size of the hailstones
Which of the following is NOT considered functional damage to the asphalt layer of a shingle?
A crack that reaches the upper surface
What is the effect of wind-driven hail on granule loss?
It causes more granule loss on older roofs
What is the term for loose granules on an older shingle roof that can be dislodged even by small hail?
Pre-existing damage
What should you do to prevent issues that you may not be able to see while on a ladder?
Always have a spotter on the ground
What should you do if your roof is made of slate tiles?
Use the Pivit tool and roof boot with care
What safety measure should you take when using an extension ladder?
Use ladder leveling tools like the Pivit tool and the roof boot
When should you work from the ladder rather than the roof?
When the roof is dry
Which of the following is NOT considered 'cosmetic' hail damage to roofing-covering materials?
Damage that affects the lifespan of the roofing material
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?
Functional damage
What is the primary factor that determines the severity of hail damage to asphalt shingles?
The size of the hailstones
What is the term used to describe the fastest speed at which a hailstone can possibly fall?
Terminal velocity
Test your knowledge on hailstone shapes in this quiz! Learn about the most common shapes and discover the occasional unusual geometrical formations. Explore the impact of different shapes on damage patterns.
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