real image
virtual image
I would use the term 'transmission'
Technically, transparency is not an on or off (yes or no) thing. There is a degree of transparency and one quantifies this by saying how much (and at what wavelengths) light is transmitted through a medium. Nonetheless, in daily language people say something is transparent when most of the light passes through and a transmission of far lesss than 97 percent falls into that category. Similarly, people use the term opaque when most of the light does not pass through a material but that usually means no detectable light or a very small fraction of light passes through.
a copy of an object formed by reflected or refracted waves of light .
Only real images can be. In physics, real images are composed of light rays that converge to a focus for each point of the image. Thus they can be projected onto a screen. Virtual images have light rays which diverge as if they had come from points behind the source. Hence a screen will just be illuminated with unfocussed light. Outside of physics, the term "image" may also refer to any visible pattern or picture, in which case "projection", "real" or "virtual" don't mean a lot, though arguably, when you look at your TV or a postage stamp what you are seeing is a virtual image even though its all about as real as any image can be!
real image
virtual image
virtual image
I would use the term 'transmission'
Meteor is the term used to describe the streak of light (also called a shooting star) that passes through the atmosphere. The light is caused when a meteroid hits the atmosphere and burns up.
image
Technically, transparency is not an on or off (yes or no) thing. There is a degree of transparency and one quantifies this by saying how much (and at what wavelengths) light is transmitted through a medium. Nonetheless, in daily language people say something is transparent when most of the light passes through and a transmission of far lesss than 97 percent falls into that category. Similarly, people use the term opaque when most of the light does not pass through a material but that usually means no detectable light or a very small fraction of light passes through.
Trachea is a common term for an airway through which respiratory air passes in organismsfor an airway through which respiratory air passes in organisms
Refraction.
"Opaque" and "transparent" refer to the amount of light that passes through the colour, not the colour itself. "Opaque" is a term used to describe any solid colour that light does not pass through. If you put an opaque colour it over another colour you will not see the colour below through it. "Transparent" is a term used to describe any colour that light passes through in any of many varying degrees. If you paint a transparent colour over another colour, you will be able, to some degree, to see the colour(s) and the ground (paper, canvas, whatever you are painting on) through the top coat.
Esophagus
A solar eclipse.