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.
One of the fastest birds is the green violet-ear hummingbird. It can fly up to 93 miles per hour (150 kilometers per hour) for short distances. Hummingbirds are so quick that they can easily escape predators like snakes, falcons, jays, toucans, and cats, unless they are taken by surprise.