9.6 Flashcards
(22 cards)
What phenomenon occurs when waves slow and change direction due to a change in water depth?
Refraction
What is the term for the path of light represented by lines?
Rays
What do we call a stream of light rays?
Beam
What type of objects emit their own visible light?
Luminous objects
What happens to light when it encounters a rough surface?
Scattering
What type of materials allow light to pass through clearly?
Transparent materials
What is the term for materials that scatter light, making objects behind them unclear?
Translucent materials
What do we call substances that absorb or reflect all light striking them?
Opaque substances
What law states that the angle of incidence equals the angle of reflection?
Law of Reflection
What type of mirror produces images that appear to be behind the mirror at the same distance as the object in front?
Plane or flat mirror
What is lateral inversion?
The sideways reversal of images seen in a mirror
What type of mirror diverges light rays?
Convex mirror
What type of mirror converges light rays to a focal point?
Concave mirror
Fill in the blank: Light travels in _______ as it moves through empty space or transparent substances.
Straight lines
What is the effect called when light is reflected from a very smooth surface?
Reflection
What is the effect when light is scattered by particles in the atmosphere, making beams of light visible?
Scattering
What type of mirror is useful for security due to its ability to reflect light from a wide range of angles?
Convex mirror
What is the purpose of a concave mirror in personal grooming?
To provide a magnified image
What is the purpose of the normal line in measuring angles of incidence and reflection?
To provide a reference point for measuring angles
True or False: You can see a single light ray.
False
What do you call the light that is emitted by non-luminous objects?
Lower energy light
What is a common example of a non-luminous object?
A wall
