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.
Share on Social Media: 1  The Peregrine Falcon is the fastest flying bird only when diving or stooping as it's called in aviation and thus is subject to controversy as the leader of the world's fastest flyers. It's horizontal flying speed is between 80 to 90 kilometres per hour (50 to 60 mph).