Final answer:
In health class, students learn about Personal Flotation Devices (PFDs), including PFD Type 4: Throwable Devices. These devices are designed to be thrown to individuals in need of help in the water, providing buoyancy and aiding in rescue efforts.
Step-by-step explanation:
In health class, students learn about various aspects of physical and mental well-being. One topic covered is Personal Flotation Devices (PFDs), which are devices designed to keep individuals afloat in water. PFD Type 4, also known as a throwable device, is a specific type of PFD that is thrown to a person in need of help in the water.
Throwable devices are typically ring buoys or cushions with handles that can be easily thrown to someone in distress. They are not designed to be worn, but rather to be used as a flotation aid.
In summary, PFD Type 4: Throwable Devices are a type of Personal Flotation Device used to provide buoyancy and aid in rescuing individuals in water emergencies.