Final answer:
To prevent propeller strikes, wear safety goggles or sunglasses, use hearing protectors, wear a safety helmet, and avoid unnecessary risks.
Step-by-step explanation:
Propeller strikes can be prevented by following certain safety measures. For example, wearing safety goggles or sunglasses can protect the eyes from injury. Additionally, wearing hearing protectors, such as ear plugs, can prevent damage caused by loud sounds. It is also important to wear a safety helmet during activities like bike riding and skating. Lastly, it is crucial to avoid unnecessary risks and to always practice caution.