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.
Birds that Fly Backwards: Interesting Facts. 1  The heart rate of a hummingbird can reach over 1,000 beats a minute. 2  The fast-paced wing flapping creates a humming noise, which gives them their name. 3  1/3rd of a hummingbirds total weight comes from the muscles it uses to fly.