Final answer:
The four types/styles of helmets, listed in decreasing order of safety (safest first), are full-face helmet, modular helmet, open-face helmet, and half-shell helmet.
Step-by-step explanation:
The four types/styles of helmets, listed in decreasing order of safety (safest first), are:
- Full-face helmet: This helmet covers the entire head and face, providing the most protection. It is commonly used in high-impact sports such as motocross and downhill biking.
- Modular helmet: This helmet has a flip-up chin bar, allowing the rider to have an open-face or full-face helmet as needed. While it offers good protection, it may not be as safe as a full-face helmet due to the its mechanism.
- Open-face helmet: This helmet covers the top, sides, and back of the head but leaves the face exposed. It offers less protection than the full-face or modular helmet but is commonly used in motorcycle riding.
- Half-shell helmet: This helmet covers only the top of the head, leaving the sides, back, and face exposed. It provides the least protection of the four types and is often used in activities like skateboarding or rollerblading.