10 questions
Which of the following is not a product that has been made with Kevlar?
Tennis rackets
Bungee jumping cords
Brake pads
Body armor
When was the first bulletproof vest invented?
1964
1975
1990
2006
For which of the following characteristics is Kevlar known?
Heat resistance
Strength
Durability
All of the above
Who is credited with inventing Kevlar?
Robert Kevlar
Richard Armellino
Stephanie Kwolek
None of the above
Which of the following caused the search for a fabric like Kevlar?
A shortage in the gasoline supply
A desire to protect police officers
The need to replace asbestos
The want of better musical instruments
A vest made of 15 layers of Kevlar with no steel plates could stop all but which of the following rounds?
Handgun rounds
Shotgun pellets
Rifle rounds
It could stop all of the above
Why did people begin using asbestos in buildings?
It was extremely durable
It was very heavy
It was poisonous to insects
It was resistant to fire
According to the article, how many American police officers are estimated to wear bulletproof vests daily?
1,000
2,000
Over half
Almost all of them
How much stronger is Kevlar than steel?
Half as strong
As strong
Five times as strong
200 times as strong
What product was Kwolek trying to improve when she invented Kevlar?
Tires
Milk
Brake pads
Armor