Bones are light because they are hollow in the middle.
They have hollow bones.
Birds bones are hollow. That is why they can fly, because they are so light because of their hollow bones. x)
An emu's bones are solid and adapted for long periods of running and walking. A seagull's bones are light and hollow so they can fly easily.
An emu's bones are solid and adapted for long periods of running and walking. A seagull's bones are light and hollow so they can fly easily.
An emu's bones are solid and adapted for long periods of running and walking. A seagull's bones are light and hollow so they can fly easily.
Hollow light weight bones means less weight, which results in a bird using less energy to fly and making it easier for the bird to take off from the ground.
It's light, streamlined so has low resistance to air. Also light-weight bones with air holes in them which are connected to the lungs.
they have hollow bones because they need to be light
Bones are light because they are hollow inside and filled primarily with marrow, a spongy substance which produces new red blood cells in large bones.
Birds have hollow bones that make them lighter so they can fly more easily.
The type of muscles that wrap around bones are typically skeletal muscles, but muscles do not make the bones light. What makes bones light are the fact that they are porous. There are a lot of holes within the bones that make it lighter, but those holes make sort of arcs and what not, similar to those in the Eiffel tower, for example. They are light weight, but very strong.
X rays are of a much higher energy than visible light, so they have more penetrating power. So they can easily penetrate tissue, but they penetrate bones less well, and most metals almost not at all.