Properties of Metalloids-What are the Physical Properties of Metalloids? What are the Physical Properties of Metalloids? The Physical properties of Metalloids are the characteristics that can be observed without changing the substance of the elements in a group into other substances.hat are the Physical Properties of Metalloids? The Physical properties of Metalloids are the characteristics that can be observed without changing the substance of the elements in a group into other substances.
Quick Answer. Hummingbirds fly backwards, and they are the only birds capable of doing so. When using this unique ability, hummingbirds may reach speeds of 25 to 30 mph as they go. These birds have flexible wings that they can rotate in swift circles to help fly in reverse.
Sent in by William S. Blackwell, Bedworth, Warwickshire. The peregrine falcon is arguably the fastest bird in the sky. Its streamlined body, powerful muscles and swept-back wing shape are perfect for fast flight. During level flight, with motion generated by wing-beats alone, they can reach speeds between 40-60 mph.This is one of the fastest known speeds for level flight with only a few species of duck, wader and pigeon known to reach similar speeds in comparable flight.uring level flight, with motion generated by wing-beats alone, they can reach speeds between 40-60 mph. This is one of the fastest known speeds for level flight with only a few species of duck, wader and pigeon known to reach similar speeds in comparable flight.